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Each diaphragm spring endures an exclusive four-stage heat treating process providing a consistent light pedal feel
Designed to elevate your driving experience
17L - Includes 4340 billet crank
Optimized Flow and Pressure: With precision porting
PERRIN Lightweight Crank Pulley Blue - Fits 19-21 Subaru WRX / 16-18 Forester / 15-19 Legacy subaru-sti-2020 Each diaphragm spring endures anThe PERRIN Lightweight Crank Pulley lightens up your rotating engine parts to free up power. True weight savings can be felt with every blip of the gas pedal. The Perrin lightweight crank pulley weighs just 1. 2lbs, which is 3. 7lbs lighter than the OEM crank pulley. This reduction in weight from the crankshaft is equal to removing more than 100lbs of the vehicle's weight. Throttle response, horsepower, and torque are all increased with this easy to
