Chevy BBC 454 Cast Steel Crankshaft ST-4.250 M-BBC RJ-2.2 RMS-2Pc Bal-Ext and include the sealing ring

and include the sealing ring

they come in three different finishes and feature a billet aluminum oil fill cap

Experience unparalleled performance and power with Speedmasters 6-71 Complete Supercharger Kitengineered for maximum horsepower and durability

These retainers are available in a variety of lock angles and sizes to suit your needs

2 SFI Approved and will withstand the extreme power and rpm of your performance application

Chevy BBC 454 Cast Steel Crankshaft ST-4.250 M-BBC RJ-2.2 RMS-2Pc Bal-Ext and include the sealing ringThese Speedmaster cast crankshafts are perfect for mildly built street engines or just to replace stock crankshafts that have seen better days. These Speedmaster crankshafts are precision ground and micro polished to exacting tolerances.