Grimmspeed Black Lightweight Crank Pulley WRX 2015-2021 / BRZ 2013-2018 / FR-S 2013-2016| 095023 SkylineR34_1999-2002 Part #: MR7-1890-25-5x114

Part #: MR7-1890-25-5x114

load conditions

2006-2008 Infiniti G35 X

8mm) Valve Lift

Grimmspeed Black Lightweight Crank Pulley WRX 2015-2021 / BRZ 2013-2018 / FR-S 2013-2016| 095023 SkylineR34_1999-2002 Part #: MR7-1890-25-5x114Your factory crank pulley is responsible for transferring energy from your crankshaft to your water pump, a c compressor and alternator. It does this by way of a rubber belt and it does it's job well. The drawback to the factory pulley is that it's quite heavy. Reasons for this include less expensive manufacturing and using the pulley's mass to smooth out 'noise' in the accessory system (NOT to be confused with functioning as a harmonic dampener,