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GrimmSpeed Lightweight Crank Pulley Black - 02-14 WRX / 04-20 STI

Improve the engine response in your vehicle with the Grimmspeed Lightweight Crank Pulley. This particular crank pulley has been carefully engineered and will decrease the rotational mass by more than 3.5lbs when compared to the OEM crank pulley. This improves throttle response and faster revs. It has the optimum weight to avoid any check engine lights or misfires. This is a direct replacement of your OEM crank pulley and will have a factory fit for a clean install. 

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