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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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Active filters
Arbre à cames Admission Clio 2 RS
Véritable produit d'origine
€278.86Price
Joint de boitier papillon Megane 2 RS
Véritable produit d'origine
€8.40Price
- New
- Pack
- New
- Pack
Do not risk a fatal oil pressure drop or bottom-end engine damage during endurance racing or extreme driving conditions. The Motul 300V Le Mans 20W60 Oil Change Kit (6 Liters) with Engine Flush cleaner is specially engineered to provide maximum mechanical strength and...
€124.90€130.72Regular price-€5.82 offPrice
- New
- Pack
- New
- Pack
Do not risk oil starvation, rod bearing failure, or total oil pressure loss during intense track sessions under extreme heat. The Motul 300V Competition 15W50 Oil Change Kit (6 Liters) with Engine Flush cleaner is specially formulated to deliver an unbreakable lubricant film...
€124.90€130.72Regular price-€5.82 offPrice
- New
- Pack
- New
- Pack
Do not risk hot oil film breakdown or mechanical component seizure during track sessions or rallying. The Motul 300V Competition 10W40 Oil Change Kit (6 Liters) with Engine Flush cleaner is specially engineered to provide ultra-stable oil pressure and protect the bottom end...
€124.90€130.72Regular price-€5.82 offPrice
- New
- Pack
- New
- Pack
Do not risk oil film breakdown or oil pressure drop during extreme track sessions or racing. The Motul 300V Competition 5W50 Oil Change Kit (6 Liters) with Engine Flush cleaner is specially formulated to withstand extreme thermal stress and protect the rotating assembly of...
€124.90€130.72Regular price-€5.82 offPrice
- New
- Pack
- New
- Pack
Do not risk lubricant film breakdown or oil pressure drop during intensive Trackday sessions or rallying. The Motul 300V Competition 5W40 Oil Change Kit (6 Liters) with Engine Flush cleaner is specially formulated to absorb extreme heat and protect the engine mechanics of...
€124.90€130.72Regular price-€5.82 offPrice
Do not take any risks with the bottom end of your Cleon-Fonte engine . This genuine Renault connecting rod bolt nut is the only certified component to guarantee the critical hold of your rotating assembly. Specifically engineered for the Renault Super 5 GT Turbo , this fastener ensures maximum resistance against the extreme thermal and...
€8.81Price
Sur commande ou en cours de réappro
€39.99
Price
Sur commande ou en cours de réappro
€39.99
Price
The Renault oil dipstick guide is an original part designed to ensure accurate measurement of the engine oil level on the Renault Clio 3 RS models. It ensures easy and reliable use of the oil dipstick.
€73.04Price
Sur commande ou en cours de réappro
€89.17
€148.62
Regular price
-40% off
Price
Sur commande ou en cours de réappro
€89.17
€148.62
Regular price
-40% off
Price
Original Renault Accessory Belt Tensioner for Megane 4 GT/RS & Alpine A110
Preserve the performance and reliability of your Renault Megane 4 GT 205, Renault Megane 4 RS, or Alpine A110 with this original Renault accessory belt tensioner. An essential component for the proper functioning of your engine accessories. You can also find the compatible accessory belt at the...
€89.17€148.62Regular price-40% offPrice
Sur commande ou en cours de réappro
€319.57
Price
Sur commande ou en cours de réappro
€319.57
Price
The centerpiece of your Renault Megane 3 RS or Megane N4 engine, this genuine Renault piston is sold individually for targeted repair. Essential for restoring engine compression and preventing power loss, this new piston guarantees newfound reliability and performance. Important: the piston is supplied with only one circlip, and piston rings must be ordered...
€319.57Price
Sur commande ou en cours de réappro
€9.26
Price
Sur commande ou en cours de réappro
€9.26
Price
Ensure ultimate engine reliability for your Renault Super 5 GT TURBO with this genuine Renault connecting rod bolt , sold individually. A crucial element of the rotating assembly, its strength is vital for your engine's performance and longevity. Don't compromise your block's integrity with uncertain quality parts.
€9.26Price
Sur commande ou en cours de réappro
€8,731.62
€8,732.50
Regular price
-0.01% off
Price
Sur commande ou en cours de réappro
€8,731.62
€8,732.50
Regular price
-0.01% off
Price
Worried about losing the power and reliability of your Renault Clio 3 RS ? Don't let a tired engine deprive you of thrilling sensations . Opt for our original Renault F4R assembled engine on exchange basis , the ideal solution to regain its former performance. Discover essential complementary products for your...
€8,731.62€8,732.50Regular price-0.01% offPrice
Sur commande ou en cours de réappro
€23.08
Price
Sur commande ou en cours de réappro
€23.08
Price
Do not take any risks when replacing your timing belt kit. Without this genuine Renault crankshaft locking pin , you expose yourself to irreversible engine damage on your Clio 16S or Williams . Specifically designed for the F7P and F7R engines , it ensures a precise Top Dead Center (TDC) for a safe intervention. An indispensable...
€23.08Price
Entretoise barre d'appui GT TURBO
Vient se placer entre le bloc et la barre d'appui
€3.29Price
Sur commande ou en cours de réappro
€174.97
Price
Sur commande ou en cours de réappro
€174.97
Price
Original RENAULT Water/Oil Cooler for Clio 2 X65 Cup & Clio 3 RS
Do not risk engine overheating and loss of performance . This original RENAULT water/oil heat exchanger is the vital component for maintaining optimal <span...
€174.97Price
Joint Spy AAC Admission Clio 3 RS - Megane 3 RS
€24.13Price
- Pack
- Pack
Kit Distribution complet Clio 2 RS.
Kit comprenant exclusivement des produit d'origine Renault hormis le joint spy de poulie de déphasage
Le kit comprend:
- Les bouchons d'étanchéité Arbres à cames
- Le kit distribution
- Le kit accessoire
- La pompe à eau
- le kit joint spy de vilebrequin
- Le kit joint spy arbres à cames + vis de...
€605.42Price
- Pack
- Pack
Kit goujons et écrous fixation bobines pour Clio 3 RS Megane 2 RS et Megane 3 RS comprenant 4 goujons et 4 écrous le tout en inox.
Le filetage présent sur le couvre culasse peut être endommagé suite à la répétition du montage/démontage des bobines, nous vous proposons de remplacer les vis par un système de goujons et écrous. Ce montage permet de laisser en place les goujons...
€8.50Price
Outil desserrage galet tendeur pour Clio 3 RS, Clio 4 RS, Megane 2 RS, Megane 3 RS, Clio 4 RS
€36.05Price
- Pack
- Pack
Kit distribution composé de produit de marque Renault
Nous n'incluons pas la poulie de déphasage mais préconisons fortement de la faire.
€368.01€408.90Regular price-10% offPrice
- Pack
- Pack
- Pack
- Pack
Kit revision moteur Twingo R2 195 ch
€9,200.45€13,143.50Regular price-30% offPrice
- Pack
- Pack
- Pack
- Pack
- Pack
- Pack
Culasse assemblée Megane 3 RS
Culasse neuve comprenant soupapes assemblées
€3,544.38Price
Sur commande ou en cours de réappro
€52.18
Price
Sur commande ou en cours de réappro
€52.18
Price
Tuyau vapeur huile décanteur répartiteur Megane 2 RS
€52.18Price
Coussinet de bielles Clio R3 MAX (prix unitaire)
La photo représente 4 coussinets mais le prix est unitaire
€79.93Price
Sur commande ou en cours de réappro
€34.98
Price
Sur commande ou en cours de réappro
€34.98
Price
Support bague joint Vilebrequin Twingo 2 RS y compris R1 et R2
€34.98Price
