Competition Clutch 04-20 Subaru STi Stage 4 - 6 Pad Ceramic Clutch Kit

A performance clutch system is one of the most impactful drivetrain upgrades available for any manual transmission vehicle. From street-friendly organic disc kits to heavy-duty ceramic setups built for drag racing and track use, matching the right clutch components to your power level and driving style keeps engagement consistent and power transfer reliable.Popular UpgradesStage 1 and Stage 2 clutch kits with upgraded pressure plates and organic or hybrid friction discs are the most popular choice for street builds making 300 to 500 horsepower. Stage 3 and Stage 4 ceramic or Kevlar disc setups handle the demands of forced induction or high-compression builds. Lightweight aluminum flywheels paired with upgraded clutch kits improve rev response and make gear changes faster on both street and track applications.What clutch stage do I need for my build?Stage 1 clutches are rated for lightly modified street engines up to about 350 horsepower. Stage 2 kits cover 350 to 500 horsepower with...

Single-disc clutch kits provide everything needed to replace the core friction components in a manual transmission system in one box. A disc, pressure plate, and release bearing shipped together as a matched kit eliminates the guesswork of sourcing compatible parts separately and ensures consistent performance from break-in through the life of the clutch.Popular UpgradesStage 1 organic single-disc kits are the best choice for street-driven vehicles at stock or lightly modified power levels, offering a smooth pedal feel close to OEM. Stage 2 kits using a high-clamp pressure plate and a sprung-hub organic disc are the most popular upgrade for modified street engines in the 300 to 500 horsepower range. Stage 3 ceramic single-disc kits handle forced induction builds where heat resistance and torque capacity are the primary requirements.What does a single-disc clutch kit include?A single-disc clutch kit typically includes one friction disc, one pressure plate assembly, and one release be...

Competition Clutch is a leading manufacturer of performance clutch systems for sport compact, import, and domestic applications. Trusted by Honda, Subaru, Mitsubishi, and Volkswagen platform builders, Competition Clutch kits offer clearly defined stage ratings from street-friendly organic setups to full race six-puck ceramic systems for maximum torque capacity.Popular UpgradesStage 2 and Stage 3 clutch kits for popular platforms including the Honda Civic, Acura RSX, Subaru WRX and STI, Mitsubishi Evo, and Volkswagen GTI are the most frequently purchased Competition Clutch products. Stage 4 and six-puck clutch kits are the preferred setup for turbocharged builds pushing 400 horsepower and above. Lightweight single-mass flywheels from Competition Clutch are a popular addition to any stage upgrade for better rev response and faster clutch pedal action.What stage Competition Clutch kit do I need?Stage 1 and Stage 2 kits use organic friction materials suited for street driving with mild ...

Shop drivetrain parts and accessories at Black Ops Auto Works for differentials, axles, driveshafts, clutch kits, flywheels, flexplates, shifters, transmission components, ring and pinion gears, differential braces, differential bushings, wheel hubs, wheel bearings, U-joints, valve bodies, transmission coolers, drivetrain mounts, and performance driveline upgrades. This collection is built for street cars, drag cars, track builds, trucks, Jeeps, SUVs, high-horsepower Mopar builds, imports, European performance vehicles, and off-road applications that need stronger power delivery, durability, and reliability. Use this Drivetrain collection to find the right upgrade by vehicle platform, drivetrain layout, transmission type, power level, and product category. Differentials and ring and pinion gears support traction and gearing changes, axles and driveshafts help transfer power, clutch kits and flywheels improve manual transmission performance, transmission coolers and valve bodies supp...