Engine

Big-bore bolt-on kit increases 114"/117" with 4-1/2" stroke M-Eight with no case machining required 4-1/4" bore cylinders with 11:1 forged pistons S&S oil pump/cam plate with blue anodized finish Passage plugs are removable for servicing Independent...

Transform the 114" or the 117" oil-cooled M8 into 132" Adjustable pressure relief valve can be adjusted with unit installed in the engine S&S valve springs feature high-performance conical single-wire spring design Big bore cylinders are matched with...

Transform the 114" or the 117" water-cooled M8 into 132" Adjustable pressure relief valve can be adjusted with unit installed in the engine S&S valve springs feature high-performance conical single-wire spring design Magnet in cam chest to help prevent...

Transform the 114" or the 117" oil-cooled M8 into 132" Adjustable pressure relief valve can be adjusted with unit installed in the engine S&S valve springs feature high-performance conical single-wire spring design Big bore cylinders are matched with...

Transform the 114" or the 117" oil-cooled M8 into 132" Adjustable pressure relief valve can be adjusted with unit installed in the engine S&S valve springs feature high-performance conical single-wire spring design Big bore cylinders are matched with...

Transform the 114" or the 117" water-cooled M8 into 132" Adjustable pressure relief valve can be adjusted with unit installed in the engine S&S valve springs feature high-performance conical single-wire spring design Magnet in cam chest to help prevent...

Transform 107" oil-cooled M8 into 129" with no case machining required Big bore cylinders come with matching cam, cam plate and oil pump Independent scavenge sections for flywheel cavity and cam chest Magnet in cam chest to help prevent debris from...

Transform 107" oil-cooled M8 into 129" with no case machining required Big bore cylinders come with matching cam, cam plate and oil pump Independent scavenge sections for flywheel cavity and cam chest Magnet in cam chest to help prevent debris from...

Transform 107" oil-cooled M8 into 129" with no case machining required Big bore cylinders come with matching cam, cam plate and oil pump Independent scavenge sections for flywheel cavity and cam chest Magnet in cam chest to help prevent debris from...

Cylinder fits to piston; no machining required TC3 cam support plate and TC3 oil pump to ensure consistent oil pressure and engine longevity Includes an S&S 4" big-bore cylinder kit with 10.5:1 pistons, S&S 585 Easy Start cams, S&S Quickee Pushrods, and...

Cylinder fits to piston; no machining required TC3 cam support plate and TC3 oil pump to ensure consistent oil pressure and engine longevity Includes an S&S 4" big-bore cylinder kit with 10.5:1 pistons, S&S 585 Easy Start cams, S&S Quickee Pushrods, and...

Cylinder fits to piston; no machining required TC3 cam support plate and TC3 oil pump to ensure consistent oil pressure and engine longevity Includes an S&S 4" big-bore cylinder kit with 10.5:1 pistons, S&S 585 Easy Start cams, S&S Quickee Pushrods, and...