Product Details
Harley Davidson Softail Slim 107 2020, M8 114" to 128" M8 Big Bore Kit by S&S Cycle®. 114" to 128" Big Bore Kit For M8 Models. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading materials using up-to-date equipment, it ensures everlasting reliability and enduring value. This product is distinguished by total quality assurance, unsurpassed by anybody else.. The biggest Big Bore possible with a slip in kit! These S&S cylinder and piston kits takes your 107" M8 to 129" and the 114" to 132". This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading materials using up-to-date equipment, it ensures everlasting reliability and enduring value. This product is distinguished by total quality assurance, unsurpassed by anybody else.
Notes
- Recommend using S&S Cycle Head Bolts for M8, part number (900-1006) for all big bore applications
- Not recommended for Tri-Glide or other three wheel models including conversion due to lugging nature of these bikes
- For closed course competition use only. Not intended for street use. Legal in California only for racing vehicles which may never be used, or registered or licensed for use, upon a highway
Fitment notes
- For M8 HD® Engines.
Specifications
4.250" borex 4.5 stroke |
11:1 compression ratio |
Wrinkle black finish |
Includes
- Cylinders
- Pistons
- Gaskets and hardware required for installation
Features
- Available 114 M8 models
- Highlighted Fins
- Bolt on kit. No Machining Required
Founded in 1958, S&S Cycle® has been providing high performance motorcycle parts for Harley-Davidson® and other v-twin motorcycles for over 55 years. Starting with a simple offering of light weight pushrod kits, the S&S motorcycle performance product line has grown to include exhaust systems, camshafts, carburetors, fuel injection systems, stroker kits, big bore kits, cylinder heads, service replacement parts and complete motorcycle engines for both vintage and modern v-twins.