Top End

S&S heads give great performance, and work with additional upgradesKits are fully assembled, and include stainless steel valves and high-lift springs (up to .640 lift)Intake manifold, pistons and gasket kits are sold separately; gasket kits contain head...

Heads come completely assembled with valve seats, valves, guides, seals, .590" lift valve springs, collars and valve keepersComplete kits also include rocker cover gaskets, head gaskets and miscellaneous hardware with instructionsUse OEM manifolds and...

Heads come completely assembled with valve seats, valves, guides, seals, .590" lift valve springs, collars and valve keepersComplete kits also include rocker cover gaskets, head gaskets and miscellaneous hardware with instructionsUse OEM manifolds and...

Bolt on big bore kits mean easy installation with no machining and no rebalancingS&S bolt-in cams and premium tappets make the most of the added displacementCams are .482" lift and 240?? duration intake and 234?? degree duration exhaustCompression ratio...

Bolt on big bore kits mean easy installation with no machining and no rebalancingS&S bolt-in cams and premium tappets make the most of the added displacementCams are .482" lift and 240° duration intake and 234° degree duration exhaustCompression ratio 9...

Bolt on big bore kits mean easy installation with no machining and no rebalancingS&S bolt-in cams and premium tappets make the most of the added displacementCams are .482" lift and 240° duration intake and 234° degree duration exhaustCompression ratio 9...

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

S&S heads give great performance, and work with additional upgradesKits are fully assembled, and include stainless steel valves and high-lift springs (up to .640 lift)Intake manifold, pistons and gasket kits are sold separately; gasket kits contain head...

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

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

Revolution Performance, Llc Cylinder Kit - 139" - Black With Highlighted Fins - M8 Rp201-611W

Heads come completely assembled with valve seats, valves, guides, seals, .590" lift valve springs, collars and valve keepersComplete kits also include rocker cover gaskets, head gaskets and miscellaneous hardware with instructionsUse OEM manifolds and...