Clutch Masters Aluminum Lightweight Flywheel - 04-21 STI

Clutch Masters 2-Piece Billet Aluminum Flywheels are made from the highest quality 6061-T6 or better grade aluminum. This material is chosen for its properties that are much more suitable for the environment than the one-piece chromoly units, with regards to heat dissipation and serviceability.

 

The replaceable friction surface used is incredibly tough high carbon steel. This allows mating with any type of clutch friction material without worry. The starter ring gears are made of high carbon heat-treated steel for long lasting durability. The unit is buttoned together with military grade fasteners to make the premier flywheel in the industry.

 

- Reduced mass equals increased acceleration.

- A lightweight flywheel works well with turbocharged engines as it reduces common turbo lag.

- CM uses only 6061-T6 aircraft grade or better billet aluminum in the manufacturer of its flywheels.

- CM uses High Carbon steel for the friction surface. (Replaceable)

- CM uses an OEM steel ring gear secured by bolts.

- CM offers a limited lifetime warranty.

- CM Billet Aluminum Flywheels meet SFI Spec 1.1 or 1.2

 

- Weight = 17 lbs

- 2007-2009 Subaru Legacy Spec. B 6MT models use Dual-Mass-Flywheels (DMF) and  require the STI type clutch assembly in order to use the STI type flywheel.

- Do NOT use a lightweight flywheel with a lightweight crankshaft pulley as reduction in mass will cause random mis-fire CEL false triggers. Install one or the other but not both! 

 

2004-2021 Subaru STI & Type-RA

JDM EJ207 STI Version 7 / 8 / 9 / 6-Speed Transmissions