The Clutch Masters aluminum flywheel for 2004–2008 Subaru WRX STI 2.5L 6-speed applications is a precision-machined, race-capable replacement produced in the USA. CNC-machined from 6061 aluminum or 1045 steel billet cores, each flywheel is zero-balanced, Type 3 hard-anodized when aluminum, black-oxide coated when steel, and SFI 1.2 certified. It uses a replaceable steel friction insert and will work with OEM or aftermarket clutches built to OEM specifications.
Clutch Masters 04-08 Subaru WRX Sti 2.5L Eng. 6-Spd Aluminum Flywheel