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BC5917 - Polaris Pro R (22-up) 78mm Stroke Crankshaft

78mm Pro R Stroker Crank - Standard weight design for boosted applications. CNC machined from 4340 billet round bar. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights, rod and main journals are finish sized to work with blue or green Polaris bearings using aftermarket rods. 

Stroke 78mm
Rod Journal 45mm
Main Journal 52mm
Weight 34 Lbs


$ 2,800.00