
The Clutch Masters CM 850 twin-disc clutch kit is a race-style 8.5-inch twin-disc assembly specified for 2004–2011 Subaru WRX STI 2.5L turbo 6-speed models. It includes a steel flywheel and is a conversion kit that will not work with the OEM flywheel; it is built to operate exclusively with a Clutch Masters flywheel. The package is a pull-type configuration intended as a higher-capacity clutch solution for the specified applications.
Clutch Masters 04-11 WRX STi 2.5L T 6sp 8.5in Race Twin Disc Clutch Kit w/ Steel FW Pull Type