Engine

Big Bore Kit Big-bore bolt-on kit increases 114"/117" with 4-1/2" stroke M-Eight to 128" with no case machining required 4-1/4" bore cylinders with 11:1 forged pistons Oil Pump/Cam Plate S&S oil pump/cam plate with blue anodized finish Passage plugs are...

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...

Big Bore Kit Big-bore bolt-on kit increases 114"/117" with 4-1/2" stroke M-Eight to 128" with no case machining required 4-1/4" bore cylinders with 11:1 forged pistons Oil Pump/Cam Plate S&S oil pump/cam plate with blue anodized finish Passage plugs are...

Big Bore Kit Big-bore bolt-on kit increases 114"/117" with 4-1/2" stroke M-Eight to 128" with no case machining required 4-1/4" bore cylinders with 11:1 forged pistons Oil Pump/Cam Plate S&S oil pump/cam plate with blue anodized finish Passage plugs are...

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...

Made in the U.S.A. Big Bore Kit 107" to 124" Big bore kit Bolt on kit No case matching required Forged pistons 11:1 Compression ratio Oil Pump/Cam Plate Precision machined from billet aluminum Blue anodized finish Passage plugs removable for servicing...

Made in the U.S.A. Big Bore Kit 107" to 124" Big bore kit Bolt on kit. No case machining required Forged pistons 11.1 Compression ratio Oil Pump/Cam Plate Precision machined from billet aluminum Blue anodized finish Passage plugs removable for servicing...

Made in the U.S.A. Big Bore Kit 107" to 124" Big bore kit Bolt on kit No case matching required Forged pistons 11:1 Compression ratio Oil Pump/Cam Plate Precision machined from billet aluminum Blue anodized finish Passage plugs removable for servicing...

Made in the U.S.A. Big Bore Kit 107" to 124" Big bore kit Bolt on kit. No case machining required Forged pistons 11.1 Compression ratio Oil Pump/Cam Plate Precision machined from billet aluminum Blue anodized finish Passage plugs removable for servicing...

Upgrade to S&S bolt-in performance camshafts Improves engine performance - higher lift and optimized cam timing S&S Quickee pushrods - easy installation, without removing rocker covers Replaces stock oil pump, cam support plate, cams, chain tensioners,...

Upgrade to S&S bolt-in performance camshafts Improves engine performance - higher lift and optimized cam timing S&S Quickee pushrods - easy installation, without removing rocker covers Replaces stock oil pump, cam support plate, cams, chain tensioners,...

Kits include standard flywheel assembly, 3-5/8" bore cylinders, 9.75:1 pistons, rings and gaskets Does not include manifold, pushrods, or pushrod clips Made In the U.S.A. Cases must be bored to accept 3-5/8" bore cylinders, and a minor crankcase...