Polaris Fully Balanced XP 1000 Stroker Crankshaft 78mm w/180° Crank Pin<h6>BC5901B</h6>

Polaris Fully Balanced XP 1000 Stroker Crankshaft 78mm w/180° Crank Pin

BC5901B

SKU: CP-PO-5-BC5901B

$3,031.00

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78mm XP 1000 (180° pin) Stroker (+4.5mm) 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. No balancing required prior to installation due to 180° offset pins.

Stroke 78mm
Rod Journal 40.93mm
Main Journal 40.98mm
Weight 19.2 Lbs

BC & CryoHeat crankshafts are made from the finest, aerospace grade 4340 steel billet material. CNC machined on state of the art, 5 axis Mazak Integrex 300-IV CNC machines to exacting tolerances (.0001"). Every crankshaft features large radius journals that add rigidity for high horsepower, high boost, high rpm applications. Gun drilled, CNC ground oil holes feature a smooth surface for extra oiling, tear dropped for added oil scoop, CNS drilled for priority main feeding to the rods and micro polished to a mirror finish for optimum bearing lubricity. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential.

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