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The Big Bore kit yields excellent results with stock cylinder headsEasy installation: no need to bore or split existing cases, just swap the cylindersCylinders are constructed from premium aluminum...

The Big Bore kit yields excellent results with stock cylinder headsEasy installation: no need to bore or split existing cases, just swap the cylindersCylinders are constructed from premium aluminum...

Kit includes fitted forged pistons, pins, clips, rings, cylinders, head gaskets, base, and exhaust gaskets10.9cc dished pistons; 10.6:1 compression ratio w/stock 85cc cylinder headsFor use with stock...

The Big Bore kit yields excellent results with stock cylinder headsEasy installation: no need to bore or split existing cases, just swap the cylindersCylinders are constructed from premium aluminum...

S&S Cycle 132" Big-Bore Cylinder Kit - Black Granite/Highlighted Fins - M8 910-0847

S&S heads are available to be used with stock-style flat-top pistonsKits are fully assembled, and include stainless steel valves and high-lift (.585") springsIntake manifold and gasket kits are sold...

S&S heads are available to be used with stock-style flat-top pistonsKits are fully assembled, and include stainless steel valves and high-lift (.585") springsIntake manifold and gasket kits are sold...

S&S heads are available to be used with stock-style flat-top pistonsKits are fully assembled, and include stainless steel valves and high-lift (.585") springsIntake manifold and gasket kits are sold...

Bolt in - no machining, balancing or splitting the crankcases; install can be performed with engine still in frameCast Ductile Iron Sleeve in cast aluminum for superior heat transfer88" engines are...

Bolt in - no machining, balancing or splitting the crankcases; install can be performed with engine still in frameCast Ductile Iron Sleeve in cast aluminum for superior heat transfer88" engines are...

Bolt in - no machining, balancing or splitting the crankcases; install can be performed with engine still in frameCast Ductile Iron Sleeve in cast aluminum for superior heat transfer88" engines are...

Bolt in - no machining, balancing or splitting the crankcases; install can be performed with engine still in frameCast Ductile Iron Sleeve in cast aluminum for superior heat transfer88" engines are...