Complete Big Bore cylinder kit with pistons, rings and gaskets. Simple swap installation; professional assembly required.
Subcategories
High-performance cylinder kit with premium aluminum cylinders and cast-in iron liners. Easy installation; kit includes pistons, rings and gaskets.
Bolt-on design for straightforward installation.
Bored slightly under nominal size; not honed.
Made in the USA.
Manufacturer recommends specific head bolts for big bore applications.
Bolt-on cylinder kit that retains original engine serial numbers and includes MLS head gaskets, all installation hardware, and a cam cover badge.
Bolt-on cylinder kit with MLS head gaskets and complete installation hardware included.
Bolt-on cylinder kit with MLS head gaskets and cam cover badge. Stroker flywheel sold separately. Made in USA.
Bolt-on kit that increases displacement without case machining. Includes MLS head gaskets and cam cover badge. Requires S&S stroker flywheel (sold separately). Made in the USA.
High-strength replacement studs that meet or exceed OE standards. Made in the USA.
Handlebar with popular bends for ergonomic comfort. Verify dimensions before ordering.
Popular bends made from high-strength carbon steel; verify handlebar dimensions before ordering.
Complete S&S top-end kit with heads, pre-fit forged pistons, and all necessary hardware for quick installation.
- Complete top-end assembly with heads, cylinders, pistons, and gaskets.
- Pistons pre-fit to cylinders for minimal downtime.
- Includes all hardware, clamps, and seals; made in the USA.
Designed for 124" Hot Set Up Kits and '99-'17 Twin Cams; requires crankcase machining.
Replacement kit includes cylinders, forged pistons, rings, wrist pins, and gaskets; only for 88" motors. Professional assembly and clearance checks required.
Durable Big Bore upgrade with premium aluminum cylinders and cast-in iron liners. Kit includes pistons, rings and gaskets. Made in the USA. Requires skilled installation.