Transmission
⚙️ Transmission Category – Strengthen the traction and reliability of your drivetrain
High-performance engine tuning requires a transmission that's up to par. At STR Performance , we offer a complete selection of high-performance transmission parts designed to handle more torque, improve traction, reduce power loss, and accelerate more efficiently.
Whether it's for a track car, a drift car, a prepared daily driver or a powerful front-wheel drive car, it is essential to optimize the transmission to ensure reliability and exploit the potential of your engine. Our components are designed for intensive use and are compatible with the most efficient vehicles on the market: Golf GTI / R, Clio RS, Civic Type R, BMW M, Audi S / RS, Focus ST / RS, Supra, GR Yaris, etc.
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🔧 Subcategories of transmission in detail:
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🛞 Reinforced clutches & performance clutch kits
A reinforced clutch is essential as soon as the engine torque exceeds the original values. It offers better grip, better torque transfer and increased heat resistance.
Our kits generally include:
• Organic, cerametallic or paddle discs
• Reinforced mechanisms
• Hydraulic or mechanical stops
• Compatibility with original or lightweight flywheel
SEO keywords: reinforced car clutch, performance clutch kit, ceramic clutch, stage 1 2 3 clutch
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🌀 Lightweight flywheels
Lightweight flywheels reduce engine inertia, improving throttle response, revving, and pedal feel. Perfect for naturally aspirated or turbocharged engines, whether for everyday driving or track use.
Ideal as a complement to a sports clutch to reduce rotating masses.
SEO keywords: lightweight flywheel, lightweight racing flywheel, fast engine response, engine weight reduction
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🔩 Limited Slip Differentials (LSD)
A limited slip differential (or LSD) is essential for optimizing traction when exiting corners, limiting wheel spin, and improving efficiency on the track, drifting, or racing. Available in:
• Turntable (2-way or 1.5-way)
• Torsen
• Viscous coupling
• Preloaded discs
Each system improves dynamic behavior depending on the type of driving.
SEO Keywords: limited slip differential, car LSD, sport limited slip differential, Torsen performance
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🔧 Reinforced universal joints and drive shafts
Our reinforced driveshafts are designed to handle high power, especially on front-wheel drive (FWD), rear-wheel drive (RWD), or all-wheel drive (AWD). Stock driveshafts are often the weak link in a tuned car, especially with a turbo or high torque.
SEO keywords: reinforced car drive shaft, high-performance transmission, sports drive shaft, performance drive shafts
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🔁 Short shift & gear lever kits
A short shifter reduces shift travel for faster, firmer, and more precise shifting. Perfect for dynamic driving and track use.
Our kits can include:
• Complete short shifter
• Aluminum levers
• Selection rods
• Reinforced ball joints
SEO keywords: short shifter car, short shift kit, sports gearbox control, racing gear lever
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🛡️ Reinforced gearbox mounts & silentblocs
Transmission mounts absorb vibrations and secure the powertrain to the chassis. Reinforced versions (polyurethane or rigid) improve gear shifting precision, engine responsiveness, and limit unwanted movement.
SEO keywords: reinforced gearbox mount, transmission silentbloc, rigid engine mount, polyurethane mounting
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⚙️ Short ratios, pinions and gearbox reinforcements
We also offer modified gearbox ratios, reinforced gears, reinforced synchro kits, or gearbox reinforcement kits for extreme configurations or cars regularly running on track.
Ideal for shortening gears, saving time on acceleration and strengthening the gearbox when faced with high power.
SEO keywords: short gear ratios, reinforced gears, sports synchros, gearbox reliability
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🚗 Vehicle compatibility
Our performance transmission parts are available for many sports cars:
Volkswagen Golf GTI / R, Audi A3/S3/RS3, BMW M, Clio RS, Mégane RS, 208 GTI, Focus RS/ST, Civic Type R, Supra, Yaris GR, 350Z, 370Z, and more.
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✅ Why STR Performance for your transmission?
• 🔧 Products tested and validated on road & circuit
• 🔥 Designed to withstand high power
• ⚙️ Suitable for manual and automatic transmissions depending on configuration
• 🛠️ Personalized technical advice for your project
• 🚚 Fast delivery, stock in France