Engine

S&S 3-piece flywheels with integral main shafts are the strongest yet, made from 4140 steel and feature a larger 1.671" crankpin Flywheel assemblies are designed for use with Timken bearing conversion Fits directly in stock crankcases with no...

S&S 3-piece flywheels with integral main shafts are the strongest yet, made from 4140 steel and feature a larger 1.671" crankpin Flywheel assemblies are designed for use with Timken bearing conversion Fits directly in stock crankcases with no...

Heads come completely assembled with valve seats, valves, guides, seals, .590" lift valve springs, collars and valve keepers Kit also includes rocker cover gaskets, head gaskets, exhaust flange gaskets and hardware for rocker housings, top engine mount...

Heads come completely assembled with valve seats, valves, guides, seals, .590" lift valve springs, collars and valve keepers Kit also includes rocker cover gaskets, head gaskets, exhaust flange gaskets and hardware for rocker housings, top engine mount...

Made of high-strength forged steel and designed for stock and high-performance custom applications Special keyed 6? large diameter tapered sprocket shaft that provides more contact area for increased strength Machined with timing notches compatible with...

Made of high-strength forged steel and designed for stock and high-performance custom applications Special keyed 6? large diameter tapered sprocket shaft that provides more contact area for increased strength Machined with timing notches compatible with...

Replacement Twin Cam "A" engine cases for stock H-D chassis only (carb and EFI) Feature greater overall strength than stock crankcases Strong, dependable Timken«-style sprocket shaft bearings Clearanced for strokes up to and including 5" All passages...

Heads come completely assembled with valve seats, valves, guides, seals, .590" lift valve springs, collars and valve keepers Kit also includes rocker cover gaskets, head gaskets, exhaust flange gaskets and hardware for rocker housings, top engine mount...

Heads come completely assembled with valve seats, valves, guides, seals, .590" lift valve springs, collars and valve keepers Kit also includes rocker cover gaskets, head gaskets, exhaust flange gaskets and hardware for rocker housings, top engine mount...

High port flow gives great performance now, and more later when additional upgrades are done Heads are fully assembled with springs and valves Compression ratios vary depending on cylinder heads chosen, pistons used and engine displacement; see...

High port flow gives great performance now, and more later when additional upgrades are done Heads are fully assembled with springs and valves Compression ratios vary depending on cylinder heads chosen, pistons used and engine displacement; see...

High port flow gives great performance now, and more later when additional upgrades are done Heads are fully assembled with springs and valves Compression ratios vary depending on cylinder heads chosen, pistons used and engine displacement; see...