One of the benefits of a Subaru boxer engine is that they respond well to lightweight crank pulleys. Kartboy’s crank pulley is a great option for you WRX/STI owners. Think of it as having a lightweight flywheel, you’re going to reduce the rotational mass and strain on the engine.
Please note on the confirmed applications list that these will also work on several other Subaru models. Make sure you have your car entered in the year, make, and model function.
The Kartboy aluminum crank pulley is black in finish, and weighs in at 2.38lbs.
COMPATABILITY