2004-2015 Subaru WRX STI Hyper Single Clutch and Flywheel Kit by Exedy The EXEDY Hyper Single Series clutch is engineered to optimize the performance of cars that are moderately modified but do not require the clutch capacity of a multi-plate clutch. Similar to our multi-plate clutches, it has a purple anodized, forged aluminum cover. The aluminum cover is stiffer than a stamped cover and therefore allows a higher lever ratio to maintain the pedal efforts at a reasonable level. There is no clamp load deflection as found in a pressed metal type cover. Additionally, the pressure plate features a series of turbine-like, air-flow-enhancing vanes that keep the clutch cooler under extreme operating conditions to improve wear life. All Hyper Single clutches come with a Chromoly steel flywheel and are normally supplied with a 6-puck cerametallic facing and a spring center damper disc assembly. However, on select vehicles, the new VF (Various Friction) disc may be offered. The Chromoly flywheel is lighter than OEM for improved engine response and a lighter overall assembly. The disc is generally smaller and thinner than the OEM disc making for lower inertia and therefore quicker, easier shifting and less wear and tear on the transmission synchros. The higher clamp load and cerametallic friction facings give approximately twice the holding torque of the OEM clutch and are higher than other single-disc clutches. Features Constructed from High-Quality Materials Benefits Improved Clutch Performance and Feel Applications 2004-2015 Subaru WRX STI What\’s In The Box? 1 – Hyper Single Clutch and Flywheel Kit Warranty Exedy\’s Standard Limited Warranty