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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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En Stock
€81.65 Price
En Stock
€81.65 Price
Bielle Twingo RS R1 et R2 160Bielle Twingo RS R1 et R2 160
      Connecting Rod for Twingo RS R1 and R2 160: Enhance the durability and performance of your engine with this robust connecting rod, designed for extreme conditions and easy installation.
      €81.65Price
      Bielle Twingo RS R1 et R2 160Bielle Twingo RS R1 et R2 160
          Connecting Rod for Twingo RS R1 and R2 160: Enhance the durability and performance of your engine with this robust connecting rod, designed for extreme conditions and easy installation.
          €81.65Price
          En Stock
          €689.93 Price
          En Stock
          €689.93 Price
          Durite inférieure radiateur Clio 2 Rs et Cup
              Durite inférieure radiateur Clio 2 Cup Référence: 7711155360
              €689.93Price
              Durite inférieure radiateur Clio 2 Rs et Cup
                  Durite inférieure radiateur Clio 2 Cup Référence: 7711155360
                  €689.93Price
                  En Stock
                  €198.25 Price
                  En Stock
                  €198.25 Price
                  Kit Joint Refection moteur Origine Clio 3 RS
                      Ensemble de joints nécéssaire au bon remontage du moteur de Clio 3 RS Véritable produit d'origine
                      €198.25Price
                      Kit Joint Refection moteur Origine Clio 3 RS
                          Ensemble de joints nécéssaire au bon remontage du moteur de Clio 3 RS Véritable produit d'origine
                          €198.25Price
                          En Stock
                          €139.18 €231.97 Regular price -40% off Price
                          En Stock
                          €139.18 €231.97 Regular price -40% off Price
                          Kit Distribution Clio 1.8 16S et WilliamsKit Distribution Clio 1.8 16S et Williams
                              Kit distribution Renault pour Clio 1.8 16S Le kit contient la courroie et les 2 galets En cas de doute nous consulter.
                              €139.18€231.97Regular price-40% offPrice
                              Kit Distribution Clio 1.8 16S et WilliamsKit Distribution Clio 1.8 16S et Williams
                                  Kit distribution Renault pour Clio 1.8 16S Le kit contient la courroie et les 2 galets En cas de doute nous consulter.
                                  €139.18€231.97Regular price-40% offPrice
                                  Collection de Ségments (X82.70)
                                      Ensure a perfect engine seal with this genuine Renault piston ring set . Specifically designed for the F4R and F4Rt engines found in the Clio 2 RS , Clio 3 RS , and Megane 3 RS , this kit is the crucial element for restoring...
                                      €37.55Price
                                      Collection de Ségments (X82.70)
                                          Ensure a perfect engine seal with this genuine Renault piston ring set . Specifically designed for the F4R and F4Rt engines found in the Clio 2 RS , Clio 3 RS , and Megane 3 RS , this kit is the crucial element for restoring...
                                          €37.55Price
                                          Renault Sport camshaft alignment tool for F4R, F4Rt, and K4M engines, SKU: 1496.Camshaft Timing Tool | Renault Clio, Megane, Twingo RS
                                              Protect your engine block against catastrophic mechanical failure during structural timing belt overhauls with this professional RENAULT Camshaft Timing Tool . Specifically engineered to slot into the rear alignment grooves of Renault Sport twin-cam engines (covering F4R,...
                                              €96.37Price
                                              Renault Sport camshaft alignment tool for F4R, F4Rt, and K4M engines, SKU: 1496.Camshaft Timing Tool | Renault Clio, Megane, Twingo RS
                                                  Protect your engine block against catastrophic mechanical failure during structural timing belt overhauls with this professional RENAULT Camshaft Timing Tool . Specifically engineered to slot into the rear alignment grooves of Renault Sport twin-cam engines (covering F4R,...
                                                  €96.37Price
                                                  En Stock
                                                  €43.02 Price
                                                  En Stock
                                                  €43.02 Price
                                                  Joint Spy Vilebrequin coté distribution
                                                      The original Renault crankshaft oil seal, timing side is an essential part to ensure crankshaft sealing in the engines of your Renault Clio 2 RS , Clio 2 GR N , Clio 2 X65 Cup , Clio 3 RS , Clio R3 , Clio 3 X85 Cup , Mégane 2 RS , Mégane 3 RS , and...
                                                      €43.02Price
                                                      Joint Spy Vilebrequin coté distribution
                                                          The original Renault crankshaft oil seal, timing side is an essential part to ensure crankshaft sealing in the engines of your Renault Clio 2 RS , Clio 2 GR N , Clio 2 X65 Cup , Clio 3 RS , Clio R3 , Clio 3 X85 Cup , Mégane 2 RS , Mégane 3 RS , and...
                                                          €43.02Price
                                                          En Stock
                                                          €37.52 Price
                                                          En Stock
                                                          €37.52 Price
                                                          Raccord 90° de rampe d'injection Clio Gr N
                                                              Secure your fuel system with this official RENAULT SPORT 90° fuel rail fitting . A key component from the competition catalog for the Renault Clio 2 RS Group N , this fitting ensures constant flow and absolute sealing under pressure. Do not let a standard component compromise the safety of your racing setup or your track day...
                                                              €37.52Price
                                                              Raccord 90° de rampe d'injection Clio Gr N
                                                                  Secure your fuel system with this official RENAULT SPORT 90° fuel rail fitting . A key component from the competition catalog for the Renault Clio 2 RS Group N , this fitting ensures constant flow and absolute sealing under pressure. Do not let a standard component compromise the safety of your racing setup or your track day...
                                                                  €37.52Price
                                                                  Joint carter inférieur huile moteur Twingo RS y compris R1 et R2Joint carter inférieur huile moteur Twingo RS y compris R1 et R2
                                                                      Joint carter inférieur huile moteur Twingo RS y compris R1 et R2
                                                                      €95.21Price
                                                                      Joint carter inférieur huile moteur Twingo RS y compris R1 et R2Joint carter inférieur huile moteur Twingo RS y compris R1 et R2
                                                                          Joint carter inférieur huile moteur Twingo RS y compris R1 et R2
                                                                          €95.21Price
                                                                          En Stock
                                                                          €19.30 €25.79 Regular price -€6.49 off Price
                                                                          En Stock
                                                                          €19.30 €25.79 Regular price -€6.49 off Price
                                                                          Courroie accessoire Twingo RS et R1
                                                                              Don't risk an unexpected breakdown! This summary concerns the Genuine RENAULT Accessory Belt for the Renault Twingo 2 RS and Renault Wind 1.6 16v models. This is an essential part for the smooth running of your sports engine. Failing to replace it in time risks costly damage. ...
                                                                              €19.30€25.79Regular price-€6.49 offPrice
                                                                              Courroie accessoire Twingo RS et R1
                                                                                  Don't risk an unexpected breakdown! This summary concerns the Genuine RENAULT Accessory Belt for the Renault Twingo 2 RS and Renault Wind 1.6 16v models. This is an essential part for the smooth running of your sports engine. Failing to replace it in time risks costly damage. ...
                                                                                  €19.30€25.79Regular price-€6.49 offPrice
                                                                                  Pompe essence modifiée Clio Gr NModified Fuel Pump DASH Fitting Renault Sport for Renault Clio 2 Gr N (7711129520)
                                                                                    • Pack
                                                                                    Do not take the risk of seeing the performance of your Renault Clio 2 Group N drop sharply. Without a stable and optimal fuel supply, you lose your advantage on the track. This modified fuel pump (Reference 7711129520 ) is the official Renault Sport part essential for maintaining...
                                                                                    €269.74Price
                                                                                    Pompe essence modifiée Clio Gr NModified Fuel Pump DASH Fitting Renault Sport for Renault Clio 2 Gr N (7711129520)
                                                                                      • Pack
                                                                                      Do not take the risk of seeing the performance of your Renault Clio 2 Group N drop sharply. Without a stable and optimal fuel supply, you lose your advantage on the track. This modified fuel pump (Reference 7711129520 ) is the official Renault Sport part essential for maintaining...
                                                                                      €269.74Price
                                                                                      En Stock
                                                                                      €8.52 €11.03 Regular price -€2.51 off Price
                                                                                      En Stock
                                                                                      €8.52 €11.03 Regular price -€2.51 off Price
                                                                                      Filtre à huile Megane 3 RSFiltre à huile Megane 3 RS
                                                                                          The Mégane 3 RS oil filter provides optimal protection and performance for your engine, ensuring efficient filtration of impurities and long-lasting durability , even in the most demanding conditions.
                                                                                          €8.52€11.03Regular price-€2.51 offPrice
                                                                                          Filtre à huile Megane 3 RSFiltre à huile Megane 3 RS
                                                                                              The Mégane 3 RS oil filter provides optimal protection and performance for your engine, ensuring efficient filtration of impurities and long-lasting durability , even in the most demanding conditions.
                                                                                              €8.52€11.03Regular price-€2.51 offPrice
                                                                                              En Stock
                                                                                              €22.74 Price
                                                                                              En Stock
                                                                                              €22.74 Price
                                                                                              Renault GLACEOL RX Type D Coolant 5LRenault GLACEOL RX Type D Coolant 5L
                                                                                                  Renault Type D Coolant – 5 L The Renault GLACEOL RX Type D coolant in a 5-litre container is an engine cooling fluid designed for compatible Renault vehicles. It helps regulate engine...
                                                                                                  €22.74Price
                                                                                                  Renault GLACEOL RX Type D Coolant 5LRenault GLACEOL RX Type D Coolant 5L
                                                                                                      Renault Type D Coolant – 5 L The Renault GLACEOL RX Type D coolant in a 5-litre container is an engine cooling fluid designed for compatible Renault vehicles. It helps regulate engine...
                                                                                                      €22.74Price
                                                                                                      Goodridge braided stainless steel tank-to-Tee fuel line part 7711160196 for Renault Twingo R1 R2 & Clio R3.
                                                                                                          Do not risk a sudden drop in fuel pressure during a crucial rally stage, a highly inflammable fuel leak underneath your chassis, or an immediate technical disqualification during safety scrutineering. The genuine Goodridge fuel tank-to-Tee piece braided line , carrying the...
                                                                                                          €119.40Price
                                                                                                          Goodridge braided stainless steel tank-to-Tee fuel line part 7711160196 for Renault Twingo R1 R2 & Clio R3.
                                                                                                              Do not risk a sudden drop in fuel pressure during a crucial rally stage, a highly inflammable fuel leak underneath your chassis, or an immediate technical disqualification during safety scrutineering. The genuine Goodridge fuel tank-to-Tee piece braided line , carrying the...
                                                                                                              €119.40Price
                                                                                                              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
                                                                                                                      Joint spy Vilebrequin côté distribution R21 turboRenault Crankshaft Oil Seal, Timing Side - Formula Renault / Renault 21 2L Turbo
                                                                                                                          Renault Crankshaft Oil Seal, Timing Side - Formula Renault / R21 2L Turbo Ensure your engine's sealing with this original Renault crankshaft oil seal. Designed for Formula Renault and Renault 21 2L Turbo, it prevents oil leaks and guarantees your engine's longevity. Original Renault Part Crankshaft oil seal, timing side ...
                                                                                                                          €20.87Price
                                                                                                                          Joint spy Vilebrequin côté distribution R21 turboRenault Crankshaft Oil Seal, Timing Side - Formula Renault / Renault 21 2L Turbo
                                                                                                                              Renault Crankshaft Oil Seal, Timing Side - Formula Renault / R21 2L Turbo Ensure your engine's sealing with this original Renault crankshaft oil seal. Designed for Formula Renault and Renault 21 2L Turbo, it prevents oil leaks and guarantees your engine's longevity. Original Renault Part Crankshaft oil seal, timing side ...
                                                                                                                              €20.87Price
                                                                                                                              Pige de Calage Vilebrequin F4R Clio RS Megane RS
                                                                                                                                  Prevent catastrophic engine failure during your timing belt replacement with this professional-grade Crankshaft Timing Pin F4R Clio RS Megane RS . Engineered specifically to match the official factory blueprints of Renault Sport power units, this high-tensile steel tool...
                                                                                                                                  €41.40Price
                                                                                                                                  Pige de Calage Vilebrequin F4R Clio RS Megane RS
                                                                                                                                      Prevent catastrophic engine failure during your timing belt replacement with this professional-grade Crankshaft Timing Pin F4R Clio RS Megane RS . Engineered specifically to match the official factory blueprints of Renault Sport power units, this high-tensile steel tool...
                                                                                                                                      €41.40Price
                                                                                                                                      Vis de bielle origine
                                                                                                                                          Secure your performance engine's bottom end with this genuine RENAULT connecting rod bolt , sold individually. Engineered to withstand high RPMs, it is essential for the maintenance and personalization of Clio 2 RS , Clio 3 RS , Megane 2/3 RS , and Clio Williams ...
                                                                                                                                          €8.56Price
                                                                                                                                          Vis de bielle origine
                                                                                                                                              Secure your performance engine's bottom end with this genuine RENAULT connecting rod bolt , sold individually. Engineered to withstand high RPMs, it is essential for the maintenance and personalization of Clio 2 RS , Clio 3 RS , Megane 2/3 RS , and Clio Williams ...
                                                                                                                                              €8.56Price
                                                                                                                                              Joint de queue de soupape echappement Megane 3 RS et N4Joint de queue de soupape echappement Megane 3 RS et N4
                                                                                                                                                  Joint de queue de soupape echappement Megane 3 RS et N4 Vendu à l'unité Véritable produit d'origine
                                                                                                                                                  €7.80Price
                                                                                                                                                  Joint de queue de soupape echappement Megane 3 RS et N4Joint de queue de soupape echappement Megane 3 RS et N4
                                                                                                                                                      Joint de queue de soupape echappement Megane 3 RS et N4 Vendu à l'unité Véritable produit d'origine
                                                                                                                                                      €7.80Price
                                                                                                                                                      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
                                                                                                                                                              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
                                                                                                                                                                      En Stock
                                                                                                                                                                      €66.99 Price
                                                                                                                                                                      En Stock
                                                                                                                                                                      €66.99 Price
                                                                                                                                                                      Injecteur Clio 3 RS et X85 Cup
                                                                                                                                                                          The original Renault injector is an essential part to ensure precise fuel injection in the engine of your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal combustion and reliable engine performance.
                                                                                                                                                                          €66.99Price
                                                                                                                                                                          Injecteur Clio 3 RS et X85 Cup
                                                                                                                                                                              The original Renault injector is an essential part to ensure precise fuel injection in the engine of your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal combustion and reliable engine performance.
                                                                                                                                                                              €66.99Price
                                                                                                                                                                              En Stock
                                                                                                                                                                              €122.62 Price
                                                                                                                                                                              En Stock
                                                                                                                                                                              €122.62 Price
                                                                                                                                                                              Batterie sèche 12V-24Ah
                                                                                                                                                                                  Batterie sèche 12V-24Ah Référence: 7711127895 Durée de vie en floating jusqu'à 5 ans Batterie VRLA d'usage général Grilles plomb-calcium pour une durée de vie améliorée Construction en fibres de verre microporeuses sans acide libre Recombinaison de gaz Fabriqué dans le monde entier Bonne récupération d'une décharge...
                                                                                                                                                                                  €122.62Price
                                                                                                                                                                                  Batterie sèche 12V-24Ah
                                                                                                                                                                                      Batterie sèche 12V-24Ah Référence: 7711127895 Durée de vie en floating jusqu'à 5 ans Batterie VRLA d'usage général Grilles plomb-calcium pour une durée de vie améliorée Construction en fibres de verre microporeuses sans acide libre Recombinaison de gaz Fabriqué dans le monde entier Bonne récupération d'une décharge...
                                                                                                                                                                                      €122.62Price
                                                                                                                                                                                      Calorstat Clio 3 RS 75°
                                                                                                                                                                                          Control your engine's temperature with this genuine Renault thermostat with an opening temperature of 75°C . Specifically designed for the Clio 3 RS , it also mounts without modification on the Clio 2 RS , allowing the cooling circuit to open more quickly. This part is essential for limiting temperature spikes and preventing the risk of engine overheating ...
                                                                                                                                                                                          €78.18Price
                                                                                                                                                                                          Calorstat Clio 3 RS 75°
                                                                                                                                                                                              Control your engine's temperature with this genuine Renault thermostat with an opening temperature of 75°C . Specifically designed for the Clio 3 RS , it also mounts without modification on the Clio 2 RS , allowing the cooling circuit to open more quickly. This part is essential for limiting temperature spikes and preventing the risk of engine overheating ...
                                                                                                                                                                                              €78.18Price
                                                                                                                                                                                              En Stock
                                                                                                                                                                                              €74.21 Price
                                                                                                                                                                                              En Stock
                                                                                                                                                                                              €74.21 Price
                                                                                                                                                                                              Genuine Renault Crankshaft Sprocket - Multi-RS ModelsGenuine Renault Crankshaft Sprocket - Multi-RS Models
                                                                                                                                                                                                  Genuine Renault Crankshaft Sprocket - Multi-RS Models Ensure the performance and reliability of your engine with this genuine Renault crankshaft sprocket. Compatible with Clio 2 RS, Clio 3 RS, Megane 2/3 RS and competition models. Essential part for timing adjustment.
                                                                                                                                                                                                  €74.21Price
                                                                                                                                                                                                  Genuine Renault Crankshaft Sprocket - Multi-RS ModelsGenuine Renault Crankshaft Sprocket - Multi-RS Models
                                                                                                                                                                                                      Genuine Renault Crankshaft Sprocket - Multi-RS Models Ensure the performance and reliability of your engine with this genuine Renault crankshaft sprocket. Compatible with Clio 2 RS, Clio 3 RS, Megane 2/3 RS and competition models. Essential part for timing adjustment.
                                                                                                                                                                                                      €74.21Price
                                                                                                                                                                                                      Durite modine/radiateur Clio 2 Cup
                                                                                                                                                                                                          The Renault Sport water hose (ref. 7711154249 ) is an essential part to ensure optimal coolant circulation between the water/oil heat exchanger and the radiator of your Renault Clio 2 X65 Cup . It guarantees a stable engine temperature and optimal performance.
                                                                                                                                                                                                          €77.62Price
                                                                                                                                                                                                          Durite modine/radiateur Clio 2 Cup
                                                                                                                                                                                                              The Renault Sport water hose (ref. 7711154249 ) is an essential part to ensure optimal coolant circulation between the water/oil heat exchanger and the radiator of your Renault Clio 2 X65 Cup . It guarantees a stable engine temperature and optimal performance.
                                                                                                                                                                                                              €77.62Price
                                                                                                                                                                                                              Outil de blocage Poulie Arbres à cames F4R Clio RS Megane RSOutil de blocage Poulie Arbres à cames F4R Clio RS Megane RS
                                                                                                                                                                                                                  Véritable outil d'origine pour le blocage des poulies d'arbres à cames nécessaire pour le remplacement de la distribution pour les moteurs F4R de Clio 2 RS, Clio 3 RS, Megane 2 RS, Megane 3 RS. Kit Spécifique au F4R Renault Sport
                                                                                                                                                                                                                  €139.02Price
                                                                                                                                                                                                                  Outil de blocage Poulie Arbres à cames F4R Clio RS Megane RSOutil de blocage Poulie Arbres à cames F4R Clio RS Megane RS
                                                                                                                                                                                                                      Véritable outil d'origine pour le blocage des poulies d'arbres à cames nécessaire pour le remplacement de la distribution pour les moteurs F4R de Clio 2 RS, Clio 3 RS, Megane 2 RS, Megane 3 RS. Kit Spécifique au F4R Renault Sport
                                                                                                                                                                                                                      €139.02Price