Pistons - Rings - Cylinders

Inspired by our Pro Stock Drag Race engines, these updated big bore kit utilizes a Ductile Cast Iron liner wrapped in cast aluminum for optimum thermal conductivity and performance Bolt-in kits do...

Inspired by our Pro Stock Drag Race engines, these updated big bore kit utilizes a Ductile Cast Iron liner wrapped in cast aluminum for optimum thermal conductivity and performance Bolt-in kits do...

Inspired by our Pro Stock Drag Race engines, these updated big bore kit utilizes a Ductile Cast Iron liner wrapped in cast aluminum for optimum thermal conductivity and performance Bolt-in kits do...

4.25" stroke length Flat top piston head shape +0.020" bore oversize These forged, 4" bore flat-topped pistons are intended for use in S&S 4" bore Super Sidewinder engines as well as other custom 4"...

Deck height is 1.0985" Wristpin diameter is .927" Standard 4.0" bore Piston features a 12.5cc raised dome to achieve a compression ratio of 10.6:1 For 2007-'17 HD CVO 110 engines (except '17...

4.25" stroke length Flat top piston head shape These forged, 4" bore flat-topped pistons are intended for use in S&S 4" bore Super Sidewinder engines as well as other custom 4" bore engines Piston...

These forged, 4" bore flat-topped pistons are intended for use in S&S 4" bore Super Sidewinder engines as well as other custom 4" bore engines 4.5" stroke length Flat top piston head shape Piston...

These forged, 4" bore flat-topped pistons are intended for use in S&S 4" bore Super Sidewinder engines as well as other custom 4" bore engines 4.5" stroke length Flat top piston head shape +0.010"...

These forged, 4" bore flat-topped pistons are intended for use in S&S 4" bore Super Sidewinder engines as well as other custom 4" bore engines 4.5" stroke length Flat top piston head shape +0.020"...

Replacement ring sets for S&S pistons only Rings come as sets for two pistons Made in the U.S.A. Compatible Vehicles

Cylinders have a stock bolt pattern and are 5.013" in length 4.625" stroke length Bored slightly under nominal size and are not honed Designed for 124" Hot Set Up Kits used in '99-'06 Twin...

Cylinders have a stock bolt pattern and are 5.013" in length 4.625" stroke length Bored slightly under nominal size and are not honed Designed for 124" Hot Set Up Kits used in '07-'17 Twin...