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Engine Parts & Tuning Hardware

Unleash Your Engine's Power: Performance Parts & Accessories

At Optimiz Access, we offer a vast lineup of engine performance parts and accessories to boost the output of your sports vehicle or premium automobile. Optimize your engine for extreme performance and enjoy an exhilarating driving experience on both road and track.

Key benefits of engine tuning: substantial horsepower and torque gains for rapid acceleration, sharper throttle response, enhanced mechanical reliability using high-strength components, and tailored custom tuning suited to all engines.

Essential Products to Maximize Engine Performance

Discover all our precision-engineered components designed to increase efficiency and durability in your engine block:

  • Cold Air Intakes & Air Filtration – Performance sports filters and carbon intake systems for maximum air filling.
  • Intercoolers & Charge Coolers – Efficient intake air cooling to sustain consistent power output under heavy loads.
  • Forged Pistons & Connecting Rods – Heavy-duty internal components built to withstand extreme temperatures and boost pressures.
  • Turbos & Superchargers – Forced induction upgrades delivering significant power increases.
  • Ignition & Servicing – Competition spark plugs, high-output ignition coils, and high-performance oil filters.

Industry-Leading Benchmark Brands

We stock top tuning and motorsport manufacturers: Wagner Tuning, Forge Motorsport, Magnecor, Green Filter, BMC Filter, NGK, Vibra Technics, and Powerflex. We also supply OEM factory parts to ensure meticulous engine maintenance.

Why you should Choose Optimiz Access for Your Engine Upgrades

Since 2010, Optimiz Access has specialized in selecting top-tier engine components for the custom upgrading and maintenance of sports vehicles. Located in northern France (Hauts-de-France) — near Lille, Valenciennes, Cambrai, Arras, Seclin, Douai, and Saint-Quentin —, our expert technicians guide your hardware selection and provide professional installation in our workshop. We ensure strict quality control along with fast worldwide shipping.

Unleash Your Engine's Full Potential Today

Give your car the raw power and sharp response it deserves. Trust the expertise of Optimiz Access, select your engine performance parts today, and benefit from our fast dispatch.

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  • Categories: Circuit d'eau
  • Categories: Entretien
  • Categories: Préparation intérieure
  • Categories: Suralimentation (Turbo)
Motul Engine Flush 300mL Pre-Oil Change for Sports Engines
      Optimize your engine's health with Motul Engine Flush (300mL). This high-performance pre-oil change treatment is essential for removing deposits, sludge, and combustion residues before introducing fresh oil. Specially formulated for performance...
      €10.75Price
      Motul Engine Flush 300mL Pre-Oil Change for Sports Engines
          Optimize your engine's health with Motul Engine Flush (300mL). This high-performance pre-oil change treatment is essential for removing deposits, sludge, and combustion residues before introducing fresh oil. Specially formulated for performance...
          €10.75Price
          En Stock
          €277.74 €396.77 Regular price -30% off Price
          En Stock
          €277.74 €396.77 Regular price -30% off Price
          Embrayage Complet Origine Megane 3 RS
              Renault Mégane 3 RS Clutch Kit (Genuine) Replace your worn clutch with this genuine Renault kit, designed specifically for the Mégane 3 RS (all versions). Ensures optimal transmission and durable performance. Essential for maintaining your sports vehicle's performance.
              €277.74€396.77Regular price-30% offPrice
              Embrayage Complet Origine Megane 3 RS
                  Renault Mégane 3 RS Clutch Kit (Genuine) Replace your worn clutch with this genuine Renault kit, designed specifically for the Mégane 3 RS (all versions). Ensures optimal transmission and durable performance. Essential for maintaining your sports vehicle's performance.
                  €277.74€396.77Regular price-30% offPrice
                  Bouchon Vase Expansion 1.4 BarGenuine Renault Expansion Tank Cap 1.4 Bar - Super 5 GT Turbo / Clio 16S / Williams / R21 Turbo
                      Safeguard your cooling system with this genuine Renault expansion tank cap rated at 1.4 Bar . Specifically engineered for legendary performance models such as the Renault Super 5 GT Turbo , Clio Williams , and R21 2L Turbo , it ensures optimal pressure regulation to prevent engine overheating. A vital precision...
                      €28.78Price
                      Bouchon Vase Expansion 1.4 BarGenuine Renault Expansion Tank Cap 1.4 Bar - Super 5 GT Turbo / Clio 16S / Williams / R21 Turbo
                          Safeguard your cooling system with this genuine Renault expansion tank cap rated at 1.4 Bar . Specifically engineered for legendary performance models such as the Renault Super 5 GT Turbo , Clio Williams , and R21 2L Turbo , it ensures optimal pressure regulation to prevent engine overheating. A vital precision...
                          €28.78Price
                          En Stock
                          €105.52 Price
                          En Stock
                          €105.52 Price
                          Pompe à eau K4M Twingo Rs R1 et R2
                              Pompe à eau K4M Twingo RS R1 et R2 Référence: 8200582675 Pompe à eau équipé de la poulie métallique, et non de la version en plastique moins fiable.
                              €105.52Price
                              Pompe à eau K4M Twingo Rs R1 et R2
                                  Pompe à eau K4M Twingo RS R1 et R2 Référence: 8200582675 Pompe à eau équipé de la poulie métallique, et non de la version en plastique moins fiable.
                                  €105.52Price
                                  En Stock
                                  €211.80 Price
                                  En Stock
                                  €211.80 Price
                                  Pompe à huileRenault Sport Oil Pump - Clio 2/3 RS & Megane 2/3 RS
                                      Secure your engine block's lubrication with this high-performance oil pump for Renault 2.0L engines. Essential for maintaining constant oil pressure, it is compatible with Clio 2 RS , Clio 3 RS , as well as X65 Cup ,...
                                      €211.80Price
                                      Pompe à huileRenault Sport Oil Pump - Clio 2/3 RS & Megane 2/3 RS
                                          Secure your engine block's lubrication with this high-performance oil pump for Renault 2.0L engines. Essential for maintaining constant oil pressure, it is compatible with Clio 2 RS , Clio 3 RS , as well as X65 Cup ,...
                                          €211.80Price
                                          Bidon de 5L de ELF HTX Collection 20w50ELF HTX Collection 20w50 5L - Porsche & Alpine Classic
                                              Protect the original powertrain of your automotive icon with ELF HTX Collection 20w50 mineral engine oil in a 5L jug . Specifically formulated for vintage mechanics and classic historic engines, this high-end formula guarantees consistent oil pressure and unmatched...
                                              €63.62Price
                                              Bidon de 5L de ELF HTX Collection 20w50ELF HTX Collection 20w50 5L - Porsche & Alpine Classic
                                                  Protect the original powertrain of your automotive icon with ELF HTX Collection 20w50 mineral engine oil in a 5L jug . Specifically formulated for vintage mechanics and classic historic engines, this high-end formula guarantees consistent oil pressure and unmatched...
                                                  €63.62Price
                                                  Joint trama capteur pression huile Ø8.4x13.8 Clio 2 Cup X65
                                                      Joint trama capteur pression huile Ø8.4x13.8 Clio 2 Cup X65 Référence : 7711065381
                                                      €0.23Price
                                                      Joint trama capteur pression huile Ø8.4x13.8 Clio 2 Cup X65
                                                          Joint trama capteur pression huile Ø8.4x13.8 Clio 2 Cup X65 Référence : 7711065381
                                                          €0.23Price
                                                          Durite Forge Admission Megane 2 RSForge Silicone Intake Hose Megane 2 RS
                                                              Forge Motorsport Silicone Intake Hose for Renault Megane 2 RS Optimize the airflow to your Renault Megane 2 RS engine with this high-quality silicone intake hose from Forge Motorsport (ref: FMRMBHS). Available in several colors. Connects to the throttle body. Discover associated products at the bottom of the page.
                                                              €44.99Price
                                                              Durite Forge Admission Megane 2 RSForge Silicone Intake Hose Megane 2 RS
                                                                  Forge Motorsport Silicone Intake Hose for Renault Megane 2 RS Optimize the airflow to your Renault Megane 2 RS engine with this high-quality silicone intake hose from Forge Motorsport (ref: FMRMBHS). Available in several colors. Connects to the throttle body. Discover associated products at the bottom of the page.
                                                                  €44.99Price
                                                                  En Stock
                                                                  €1.32 Price
                                                                  En Stock
                                                                  €1.32 Price
                                                                  Joint Vidange Boite diam 16
                                                                      Gearbox Drain Plug Washer – 16 mm The Renault drain plug washer, reference 7703062062 , is a sealing component designed to help prevent oil leaks at a compatible drain...
                                                                      €1.32Price
                                                                      Joint Vidange Boite diam 16
                                                                          Gearbox Drain Plug Washer – 16 mm The Renault drain plug washer, reference 7703062062 , is a sealing component designed to help prevent oil leaks at a compatible drain...
                                                                          €1.32Price
                                                                          Poulie accessoire filtrante (damper) Twingo RS, R1 et R2Poulie accessoire filtrante (damper) Twingo RS, R1 et R2
                                                                              Poulie accessoire filtrante Twingo RS, R1 et R2 7711167301
                                                                              €127.10Price
                                                                              Poulie accessoire filtrante (damper) Twingo RS, R1 et R2Poulie accessoire filtrante (damper) Twingo RS, R1 et R2
                                                                                  Poulie accessoire filtrante Twingo RS, R1 et R2 7711167301
                                                                                  €127.10Price
                                                                                  Dispo selon configuration
                                                                                  €67.23 €74.70 Regular price -10% off Price
                                                                                  Dispo selon configuration
                                                                                  €67.23 €74.70 Regular price -10% off Price
                                                                                  Kit Vidange Elf SXR 5w40 Clio 4 RS - Megane 4 GTKit Vidange Elf SXR 5w40 Clio 4 RS - Megane 4 GT
                                                                                    • Pack
                                                                                    Kit Vidange Elf Evolution SXR comprenant 3 bidons de 2 Litres d'huile Elf Evolution SXR 5w40 (préconisation Constructeur), 1 filtre à huile Renault et 1 joint de vidange
                                                                                    €67.23€74.70Regular price-10% offPrice
                                                                                    Kit Vidange Elf SXR 5w40 Clio 4 RS - Megane 4 GTKit Vidange Elf SXR 5w40 Clio 4 RS - Megane 4 GT
                                                                                      • Pack
                                                                                      Kit Vidange Elf Evolution SXR comprenant 3 bidons de 2 Litres d'huile Elf Evolution SXR 5w40 (préconisation Constructeur), 1 filtre à huile Renault et 1 joint de vidange
                                                                                      €67.23€74.70Regular price-10% offPrice
                                                                                      Bague étanchéité arbre à cames Twingo R2Twingo RS (R1/R2) Exhaust Camshaft Oil Seal - Original
                                                                                          The original Renault exhaust camshaft oil seal is an essential sealing part for your Renault Twingo RS, Twingo R1 , or Twingo R2 . It ensures a tight seal between the camshaft, cylinder head, and valve cover, preserving your engine's performance and reliability.
                                                                                          €16.92Price
                                                                                          Bague étanchéité arbre à cames Twingo R2Twingo RS (R1/R2) Exhaust Camshaft Oil Seal - Original
                                                                                              The original Renault exhaust camshaft oil seal is an essential sealing part for your Renault Twingo RS, Twingo R1 , or Twingo R2 . It ensures a tight seal between the camshaft, cylinder head, and valve cover, preserving your engine's performance and reliability.
                                                                                              €16.92Price
                                                                                              Dispo selon configuration
                                                                                              €925.00 Price
                                                                                              Dispo selon configuration
                                                                                              €925.00 Price
                                                                                              Echangeur Forge Clio 4 RSEchangeur Forge Clio 4 RS
                                                                                                  La dernière génération 1.6 turbo Renault Clio dispose d'un echangeur monté verticalement. L'endroit n' est pas ideal et trop petit pour la voiture standard. La solution pour les voitures Renault Clio Cup était de rénover l'ensemble du réseau avec un refroidissement par pulvérisation d'eau, mais ce fut insuffisant sur la piste après quelques tours. Notre solution était un échangeur monté...
                                                                                                  €925.00Price
                                                                                                  Echangeur Forge Clio 4 RSEchangeur Forge Clio 4 RS
                                                                                                      La dernière génération 1.6 turbo Renault Clio dispose d'un echangeur monté verticalement. L'endroit n' est pas ideal et trop petit pour la voiture standard. La solution pour les voitures Renault Clio Cup était de rénover l'ensemble du réseau avec un refroidissement par pulvérisation d'eau, mais ce fut insuffisant sur la piste après quelques tours. Notre solution était un échangeur monté...
                                                                                                      €925.00Price
                                                                                                      Genuine RENAULT Oil Drain Plug - All Clio/Mégane RS Models
                                                                                                          Protect your engine against critical leaks! Replace your genuine oil drain plug with this RENAULT reference, essential for all Clio RS , Mégane RS models and competition derivatives (Gr N, R3, X85 Cup). A quality screw guarantees the seal of the oil pan (sump), preventing a ...
                                                                                                          €4.72Price
                                                                                                          Genuine RENAULT Oil Drain Plug - All Clio/Mégane RS Models
                                                                                                              Protect your engine against critical leaks! Replace your genuine oil drain plug with this RENAULT reference, essential for all Clio RS , Mégane RS models and competition derivatives (Gr N, R3, X85 Cup). A quality screw guarantees the seal of the oil pan (sump), preventing a ...
                                                                                                              €4.72Price
                                                                                                              En Stock
                                                                                                              €15.42 Price
                                                                                                              En Stock
                                                                                                              €15.42 Price
                                                                                                              Huile moteur Total quartz racing 10w60
                                                                                                                  Huile moteur Total Quartz Racing 10w60 Produit préconisé par Renault sport pour la Mégane N4 Référence: 7711166390 Vendu en bidon de 1L
                                                                                                                  €15.42Price
                                                                                                                  Huile moteur Total quartz racing 10w60
                                                                                                                      Huile moteur Total Quartz Racing 10w60 Produit préconisé par Renault sport pour la Mégane N4 Référence: 7711166390 Vendu en bidon de 1L
                                                                                                                      €15.42Price
                                                                                                                      En Stock
                                                                                                                      €70.25 Price
                                                                                                                      En Stock
                                                                                                                      €70.25 Price
                                                                                                                      Blue Crankshaft Half-Bearing Set
                                                                                                                          Blue Crankshaft Half-Bearing Set This blue crankshaft half-bearing set is designed for engine applications requiring compatible crankshaft bearing components. Before ordering, check the engine specification and the manufacturer's references to ensure correct fitment.
                                                                                                                          €70.25Price
                                                                                                                          Blue Crankshaft Half-Bearing Set
                                                                                                                              Blue Crankshaft Half-Bearing Set This blue crankshaft half-bearing set is designed for engine applications requiring compatible crankshaft bearing components. Before ordering, check the engine specification and the manufacturer's references to ensure correct fitment.
                                                                                                                              €70.25Price
                                                                                                                              Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2
                                                                                                                                  Bague étanchéité électrovanne de déphasage Twingo RS, R1 et R2
                                                                                                                                  €17.09Price
                                                                                                                                  Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2
                                                                                                                                      Bague étanchéité électrovanne de déphasage Twingo RS, R1 et R2
                                                                                                                                      €17.09Price
                                                                                                                                      En Stock
                                                                                                                                      €83.39 Price
                                                                                                                                      En Stock
                                                                                                                                      €83.39 Price
                                                                                                                                      Boitier sortie eau sans calorstat Twingo R1 R2
                                                                                                                                          Boitier sortie eau sans calorstat Twingo R1 R2 Référence: 7711162845
                                                                                                                                          €83.39Price
                                                                                                                                          Boitier sortie eau sans calorstat Twingo R1 R2
                                                                                                                                              Boitier sortie eau sans calorstat Twingo R1 R2 Référence: 7711162845
                                                                                                                                              €83.39Price
                                                                                                                                              Collection Entrainement pompe à huile Clio 2 RS, Gr N et X65Cup
                                                                                                                                                  Collection Entrainement pompe à huile Clio 2 RS, Gr N et X65Cup
                                                                                                                                                  €54.25Price
                                                                                                                                                  Collection Entrainement pompe à huile Clio 2 RS, Gr N et X65Cup
                                                                                                                                                      Collection Entrainement pompe à huile Clio 2 RS, Gr N et X65Cup
                                                                                                                                                      €54.25Price
                                                                                                                                                      En Stock
                                                                                                                                                      €244.00 Price
                                                                                                                                                      En Stock
                                                                                                                                                      €244.00 Price
                                                                                                                                                      Wasegate Forge Megane RS
                                                                                                                                                          Dotée d'un tarage plus ferme que le modèle d'origine, elle permet une mise en action plus rapide du turbo, et une pression de sural plus stable.
                                                                                                                                                          €244.00Price
                                                                                                                                                          Wasegate Forge Megane RS
                                                                                                                                                              Dotée d'un tarage plus ferme que le modèle d'origine, elle permet une mise en action plus rapide du turbo, et une pression de sural plus stable.
                                                                                                                                                              €244.00Price
                                                                                                                                                              Mecacyl CR 100 ml
                                                                                                                                                                  Protect your high-performance engine's internal components with the Mecacyl CR 100 ml engine hyper-lubricant. This unique surface treatment mixes directly with your fresh oil to drastically reduce internal friction, lower operating temperatures, and optimize engine...
                                                                                                                                                                  €28.50Price
                                                                                                                                                                  Mecacyl CR 100 ml
                                                                                                                                                                      Protect your high-performance engine's internal components with the Mecacyl CR 100 ml engine hyper-lubricant. This unique surface treatment mixes directly with your fresh oil to drastically reduce internal friction, lower operating temperatures, and optimize engine...
                                                                                                                                                                      €28.50Price
                                                                                                                                                                      Joint répartiteur admission ( plenum ) Twingo 2 RS, R1 et R2
                                                                                                                                                                          Joint répartiteur admission Twingo RS R1 et R2
                                                                                                                                                                          €26.36Price
                                                                                                                                                                          Joint répartiteur admission ( plenum ) Twingo 2 RS, R1 et R2
                                                                                                                                                                              Joint répartiteur admission Twingo RS R1 et R2
                                                                                                                                                                              €26.36Price
                                                                                                                                                                              High-tensile steel replacement tuning preload spring for Forge Motorsport dump valves.
                                                                                                                                                                                  Prevent boost pressure leaks and excessive throttle response lag on your turbocharged engine block. This premium Forge Dump Valve Preload Spring features an uprated mechanical rating designed specifically to maintain the internal piston seal of your bypass valve under high...
                                                                                                                                                                                  €10.93Price
                                                                                                                                                                                  High-tensile steel replacement tuning preload spring for Forge Motorsport dump valves.
                                                                                                                                                                                      Prevent boost pressure leaks and excessive throttle response lag on your turbocharged engine block. This premium Forge Dump Valve Preload Spring features an uprated mechanical rating designed specifically to maintain the internal piston seal of your bypass valve under high...
                                                                                                                                                                                      €10.93Price
                                                                                                                                                                                      Durite Forge Induction Megane 2 RSDurite Forge Induction Megane 2 RS
                                                                                                                                                                                          Durite Forge Silicone. Se monte en lieu et place Plusieurs Coloris Disponibles
                                                                                                                                                                                          €140.75Price
                                                                                                                                                                                          Durite Forge Induction Megane 2 RSDurite Forge Induction Megane 2 RS
                                                                                                                                                                                              Durite Forge Silicone. Se monte en lieu et place Plusieurs Coloris Disponibles
                                                                                                                                                                                              €140.75Price
                                                                                                                                                                                              Kit Complet Durites D'eau Clio 3 RSKit Complet Durites D'eau Clio 3 RS
                                                                                                                                                                                                  Kit complet de durites d'eau pour Clio 3 RS. Convient à toutes les Clio 3 RS Ce kit vient en lieu et place des durites d'origine et les remplacent avantageusement.
                                                                                                                                                                                                  €445.18Price
                                                                                                                                                                                                  Kit Complet Durites D'eau Clio 3 RSKit Complet Durites D'eau Clio 3 RS
                                                                                                                                                                                                      Kit complet de durites d'eau pour Clio 3 RS. Convient à toutes les Clio 3 RS Ce kit vient en lieu et place des durites d'origine et les remplacent avantageusement.
                                                                                                                                                                                                      €445.18Price
                                                                                                                                                                                                      En Stock
                                                                                                                                                                                                      €8.57 Price
                                                                                                                                                                                                      En Stock
                                                                                                                                                                                                      €8.57 Price
                                                                                                                                                                                                      Joint de décanteur Clio 2 RS - Clio 3 RS
                                                                                                                                                                                                          Joint de décanteur Clio 2 RS et Clio 3 RS Joint se trouvant entre le décanteur et le plenum
                                                                                                                                                                                                          €8.57Price
                                                                                                                                                                                                          Joint de décanteur Clio 2 RS - Clio 3 RS
                                                                                                                                                                                                              Joint de décanteur Clio 2 RS et Clio 3 RS Joint se trouvant entre le décanteur et le plenum
                                                                                                                                                                                                              €8.57Price
                                                                                                                                                                                                              En Stock
                                                                                                                                                                                                              €133.31 Price
                                                                                                                                                                                                              En Stock
                                                                                                                                                                                                              €133.31 Price
                                                                                                                                                                                                              Joint de Culasse renforcé CometicJoint de Culasse renforcé Cometic
                                                                                                                                                                                                                  Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 0.75mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alesages et épaisseur disponibles, nous contacter.
                                                                                                                                                                                                                  €133.31Price
                                                                                                                                                                                                                  Joint de Culasse renforcé CometicJoint de Culasse renforcé Cometic
                                                                                                                                                                                                                      Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 0.75mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alesages et épaisseur disponibles, nous contacter.
                                                                                                                                                                                                                      €133.31Price
                                                                                                                                                                                                                      En Stock
                                                                                                                                                                                                                      €158.84 €252.12 Regular price -37% off Price
                                                                                                                                                                                                                      En Stock
                                                                                                                                                                                                                      €158.84 €252.12 Regular price -37% off Price
                                                                                                                                                                                                                      Kit Distribution origine Clio 2 RSGenuine Renault Timing Kit - Clio 2 RS / Gr N / Cup
                                                                                                                                                                                                                          Ensure your engine's longevity with this genuine RENAULT timing belt kit , engineered for the high-performance demands of the Renault Clio 2 RS , as well as Group N and X65 Cup racing versions. This complete pack guarantees maintenance that meets Renault Sport standards. ...
                                                                                                                                                                                                                          €158.84€252.12Regular price-37% offPrice
                                                                                                                                                                                                                          Kit Distribution origine Clio 2 RSGenuine Renault Timing Kit - Clio 2 RS / Gr N / Cup
                                                                                                                                                                                                                              Ensure your engine's longevity with this genuine RENAULT timing belt kit , engineered for the high-performance demands of the Renault Clio 2 RS , as well as Group N and X65 Cup racing versions. This complete pack guarantees maintenance that meets Renault Sport standards. ...
                                                                                                                                                                                                                              €158.84€252.12Regular price-37% offPrice