CRANKSHAFT - Nissan SR20DE(T), 91mm Stroke, 4340 Billet

The BC stroker kit for the Nissan SR20DE(T) engine incorporates a 91mm stroke, steel billet crankshaft. Depending on bore size that you decide, the BC kit will take you up to a 2.3L with a safe 89mm bore. The SR20DE(T) kit utilizes premium steel billet connecting rods. As usual, each BC kit features custom CP pistons, wrist pins, full ring pack and buttons. Big time horsepower and torque gains.

• BC 4340 billet steel crankshaft (91mm stroke).
• BC 4340 Sportsman or Pro Series (BC625+) connecting rods featuring ARP premium fasteners.
• CP or JE aluminum forged pistons (any bore size, any compression ratio).
• 5100 Series carbon steel alloy wrist pins. 9310 Series pin upgrade avail.
• Ductile iron plasma top rings, tapered second ring, low tension oil rings.
• Fully system balanced and ready to install. (50% deposit required)
• Stroke: 91mm
• Crank Pin: 47.96mm
• Main: 54.965mm
• Crankshaft: BC5209
• Car Make: Nissan
• Engine Model: SR20DET

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.