S&S Cycle 129" Big Bore Cylinder Kit
S&S Cycle 129" Big Bore Cylinder Kit
About this product
About this product
Start your engine upgrade with the S&S Cycle 129" Big Bore Cylinder Kit, engineered to boost your motorcycle's performance without compromising its original integrity. This premium kit delivers increased displacement and power, transforming your ride.
Description
The S&S Cycle 129" Big Bore Cylinder Kit is the ultimate solution for riders seeking a significant power increase. Designed for seamless integration, this high-performance motorcycle cylinder kit retains your engine's original serial numbers and stock height, ensuring hassle-free installation and compliance. Featuring a robust 4.320" bore size and a 4.375" stroke length, it elevates your engine's displacement to a formidable 129 cubic inches. The kit boasts an aggressive 11.0:1 compression ratio, providing a substantial boost in throttle response and overall horsepower. Crafted with precision, it includes Multi-Layered Steel (MLS) head gaskets for superior sealing and durability under extreme conditions. The cylinders come in a striking powder-coated, wrinkle black finish with highlighted fins, adding a custom, high-performance aesthetic to your motorcycle engine upgrade. Its stock bolt pattern and compatibility with your stock crankcase make this a straightforward yet powerful enhancement.
Features & Highlights
- Enhanced Displacement & Power: Transform your ride with a significant boost in engine displacement to 129", delivering noticeable power and torque gains for an exhilarating experience.
- Seamless Integration: Designed to work with your stock crankcase and bolt pattern, this kit retains your engine's original serial numbers and stock height, simplifying installation while maintaining authenticity.
- Superior Sealing with MLS Gaskets: Includes high-quality Multi-Layered Steel (MLS) head gaskets, providing exceptional sealing integrity and reliability under high-performance demands.
- Aggressive Compression Ratio: An 11.0:1 compression ratio optimizes combustion efficiency, resulting in improved throttle response and increased horsepower for a more dynamic ride.
- Durable & Stylish Finish: The cylinders feature a powder-coated, wrinkle black finish with highlighted fins, offering both robust protection and a custom, high-performance aesthetic.
Technical Specifications
- Product Name: Cylinder Kit
- Type: Big Bore
- Units: Kit
- Bore Size: 4.320"
- Stroke Length: 4.375"
- Displacement: 129"
- Compression Ratio: 11.0:1
- Color/Finish: Powder-Coated, Highlighted Fins, Wrinkle Black
- Vendor Part Number: 910-0843A
- MPN/SKU: 09311205
Important to Know
- Not compatible with VVT (Variable Valve Timing) models.
Shipping & Return
Shipping & Return
Free shipping to GLS parcel shop parcel box for purchases over DKK 1,000.
GLS home delivery costs DKK 59.
We do our best to ship your order as quickly as possible. All orders are generally packed within 24 hours on weekdays.
There is a 14-day return policy. Read more
Specifications
910-0843A
Powder-Coated, Highlighted Fins, Wrinkle Black
Cylinder Kit
4,320"
11.0:1
129"
4,375"
375 mm
269 mm
486 mm
Big Bore
Kit
Reviews
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Martin and William are the duo behind Parts Denmark — an unlikely but awesome combo of a tech-savvy young IT wizard and a seasoned motorcycle guru who’s seen (and fixed) it all. Together, we’ve built a team with big ambitions, plenty of passion, and a shared mission to create great things — side-by-side with you.
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