Crankshafts

Crankcase Oil Screen for 1948-1999bt

This 4-1/8" wrinkle black, stock stud pattern crankcase for 1999-'06 HD® Twin Cam 88®A engines (except 2006 HD® Dyna®) is much stronger than stock crankcases in every aspect. It has an extra large front motor mount for increased strength. The large cam...

The S&S Cycle Crankcase Baffle Plate is designed for 1999 and later Big Twin models to strengthen your Harley-Davidson's engine performance. The baffle plate helps manage crankcase pressure, pormoting efficient oil circulation and reducing the risk of...

S&S Cycle 92-99 BT w/ 3-5/8 Bore Super Stock Alternator Style Crankcase - Wrinkle Black

A ported breather passageway and a machined breather window allows the air/oil mist to flow from the flywheel cavity to the cam chest of the engine with the least possible restriction

A ported breather passageway and a machined breather window allows the air/oil mist to flow from the flywheel cavity to the cam chest of the engine with the least possible restriction

S&S Cycle 92-99 BT 4-1/8in Bore Small Diameter Flywheels Special Application Crankcase - Natural

S&S Cycle 65-69 BT w/ Stock Bore Super Stock Generator Style - Natural

Perfect for stock replacement and high performance applications, these crankcases offer some unique features. Besides being machined for a crank position sensor, they are also compatible with stock flywheel assemblies, primary covers, gearcovers and are...

S&S Cycle 1984+ BT 1.500in Press-In Crankpin

Fits: 1965-'69 Over Head Valve. Smooth w/o outside oiler passage, 5/16" gen mount holes w/12 o'clock boss. S&S® Crankcase only.

Moroso 5/8in Hose Crankcase Evac System w/Billet Push In Breathers