Chevy BBC 454 Cast Steel Crankshaft ST-4.250 M-BBC RJ-2.2 RMS-2Pc Bal-Ext they come in three different

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

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

offering an unmatched solution for a wide spectrum of vehicles

They are made of steel

The right choice is critical for your engine and your wallet--choose Speedmaster iron distributor gears

Chevy BBC 454 Cast Steel Crankshaft ST-4.250 M-BBC RJ-2.2 RMS-2Pc Bal-Ext they come in three differentThese 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.