Subaru crank pulley, non under-drive style. Once installed it is indistinguishable from the stock item, but is made from 6061 alloy and weighs a mere 550g, instead of the hefty 2180g of the factory WRX unit (2575g for the STi model).
Engine Internals & Assemblies
Go Fast Bits Non-Underdrive Crank Pulley (Subaru EJ20 / EJ25)
Original price was: $161.10.$40.28Current price is: $40.28.