We have re-designed our WRX lightweight pulley (part #2009) to provide even more benefits. It is now shaped to look exactly like the factory Subaru pulley, so it goes unnoticed in your engine bay - it even uses the factory belts. A significant amount of weight has been removed from around the rim for even better throttle response. The 2009 pulley now weighs in at 578g (previously 790g), compared to the factory 2180g on the WRX and 2575g on the STi. This pulley will improve throttle response (particularly off-boost response) and allow the engine to rev more freely in the upper rev range. It suits ALL Subaru EJ-series engines, and does not require additional belts. WRX Non-underdrive Crank Pulley also suits: SUBARU GT MY01-02 SF 130kw Petrol Engine AWD Closed Off-Road Vehicle 04/01-09/02 SUBARU GT MY98-00 SF 125kw Petrol Engine AWD Closed Off-Road Vehicle 06/98-04/01 SUBARU XT MY09-13 SH 169kw Petrol Engine AWD Closed Off-Road Vehicle 06/08-on SUBARU XT MY09-13 SH 126kw Petrol Engine AWD Closed Off-Road Vehicle 01/09-on SUBARU Impreza 2.0 Turbo GT EJ205 MY98-00 GC 160kw Petrol Engine AWD Sedan 06/98-12/00 SUBARU Impreza 2.0 Turbo GT EJ205 MY98-00 GF 160kw Petrol Engine AWD Wagon 06/98-12/00 SUBARU Impreza 2.0 Turbo GT EJ20T MY94-00 GC 155kw Petrol Engine AWD Sedan 03/94-12/00 SUBARU Impreza 2.0 Turbo GT EJ20T MY94-00 GF 155kw Petrol Engine AWD Wagon 03/94-12/00 SUBARU STi MY99-00 GC8G 206kw Petrol Engine AWD Sedan 09/99-09/00 SUBARU STi MY99-00 GC 206kw Petrol Engine AWD Sedan 09/98-09/00 SUBARU STi MY99-00 GFC 206kw Petrol Engine AWD Coupe 09/98-09/00 SUBARU STi MY03-07 GD, GG 221kw Petrol Engine AWD Sedan 10/05-on SUBARU STi MY03-07 GD, GG 195kw Petrol Engine AWD Sedan 11/01-on SUBARU STi MY03-07 GD, GG 206kw Petrol Engine AWD Sedan 09/05-on SUBARU STi MY03-07 GD, GG 195kw Petrol Engine AWD Hatchback 12/