Chevy BBC 454 Cast Steel Crankshaft ST-4.250 M-BBC RJ-2.2 RMS-2Pc Bal-Ext These Speedmaster cast crankshafts are

These Speedmaster cast crankshafts are perfect for mildly built street engines or just to replace stock crankshafts that have seen better days

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

and include the sealing ring

and perform at a much higher rpm

Chevy BBC 454 Cast Steel Crankshaft ST-4.250 M-BBC RJ-2.2 RMS-2Pc Bal-Ext These Speedmaster cast crankshafts areThese 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.