Exedy 2004-2014 Subaru Impreza WRX STI H4 Hyper Single Clutch Sprung Center Disc Pull Type

The Exedy Hyper Single Clutch is engineered for high-horsepower street and track builds that demand serious clamping force, quick engagement, and exceptional thermal performance—all in a package that retains reasonable streetability. Designed for vehicles that are heavily modified, the Hyper Single clutch is Exedy’s bridge between conventional single-disc upgrades and more extreme multi-plate setups. It’s a favorite among aggressive street cars and weekend track builds due to its high strength-to-weight ratio, precision engagement, and durability under pressure.

At the core of the Hyper Single is a lightweight forged aluminum clutch cover paired with a single, solid cerametallic disc. This combination significantly reduces rotational mass and improves throttle response while maintaining consistent torque delivery. The clutch disc itself uses a solid hub and cerametallic pads to provide aggressive engagement, excellent heat resistance, and reduced fade in high-RPM conditions. This makes it ideal for turbocharged, supercharged, or high-compression builds that would easily overwhelm a conventional clutch.

Despite its aggressive construction, the Hyper Single clutch manages to retain a moderate pedal effort, thanks to Exedy’s diaphragm spring design and strategic pivot geometry. Clutch engagement is firm and responsive but not overly harsh, making it suitable for high-powered street driving in the hands of an experienced enthusiast. Engagement is direct and confidence-inspiring, allowing for precise launches, fast shifts, and reliable high-load operation lap after lap.

What sets the Hyper Single apart is its precision balance between performance and packaging. Its compact design means easier fitment in tight engine bays, and its advanced material selection ensures longevity even in high-stress motorsport scenarios. Whether you're pushing your car on the track or tearing through mountain roads, this clutch delivers the grip and feel needed to stay in total control.

Exedy is the leading manufacturer of racing clutches in Japan and supplies all six factory vehicle manufacturers' race teams. Unlike our competitors, our clutches are NOT rebuilt OE or modified stock clutches. ALL EXEDY racing and performance clutches are engineered, designed, and built from the ground up as true motorsport components—in the same facilities that produce our trusted OEM units. EXEDY’s product innovations are patented worldwide and developed in-house using state-of-the-art design, inspection, and testing equipment. Every clutch is subjected to extensive simulations that mimic the harshest driving conditions to guarantee real-world performance. And before a single part leaves the EXEDY factory, it undergoes both robotic and visual inspection to ensure quality you can stand behind.