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K20A / K20Z CRANKSHAFTS
BC 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, cross 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.

Part # Description # Stroke Crank Pin Main Buy Now Status
BC5047 CRANKSHAFT - Lightweight Honda/Acura K20, 4340 Billet w/OEM Rod Journal 92mm 47.95mm 55mm In-Stock
BC5048 CRANKSHAFT - Honda/Acura K20, 4340 Billet w/.935"/1.771"/B18A Rod Journal 92mm 45mm 55mm In-Stock
BC5049 CRANKSHAFT - Honda/Acura K24, 4340 Billet w/.935"/1.771"/B18A Rod Journal 102mm 45mm 55mm In-Stock
BC5049-103 CRANKSHAFT - Honda/Acura K24, 4340 Billet w/.935"/1.771"/B18A Rod Journal 103mm 45mm 55mm In-Stock
BC5049-105 CRANKSHAFT - Honda/Acura K24, 4340 Billet w/.935"/1.771"/B18A Rod Journal 105mm 45mm 55mm In-Stock
BC5043-SPL CRANKSHAFT - Honda/Acura K24, EN30B Billet w/.940"/1.888"/F20C Rod Journal 106mm 47.95mm 55mm In-Stock
619.749.9018 ph
619.749.9128 fx
Some products listed are not legal for sale or use on emission controlled motor vehicles, RPM ranges vary on application.Warranty Information Copyright © Brian Crower Inc. All rights reserved.   Follow runBC on Twitter