S&s Cycle 129" Big Bore Cylinder Kit
S&s Cycle 129" Big Bore Cylinder Kit
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Estimated delivery: Feb 06 - Feb 10
About this product
About this product
Upgrade your engine's performance with the S&S Cycle 129" Big Bore Cylinder Kit. This kit delivers a significant boost in power and torque, transforming your riding experience. Experience the thrill of enhanced acceleration and responsiveness with this high-quality, easy-to-install upgrade.
Description
The S&S Cycle 129" Big Bore Cylinder Kit is designed for enthusiasts seeking maximum performance gains. This bolt-on kit increases your engine's displacement to 129 cubic inches, resulting in a noticeable increase in horsepower and torque. No crankcase machining is required for installation, and your original engine serial numbers are retained, preserving the authenticity of your motorcycle. The kit includes MLS (multi-layered steel) head gaskets for a superior seal and retains the stock engine height. A cam cover badge is included for a finishing touch. Made in the USA, this kit includes all necessary gaskets and hardware, ensuring a smooth and hassle-free installation process. The wrinkle black powder-coated finish with non-highlighted fins provides a sleek, aggressive look.
Features & highlights
- Experience a significant power increase with a larger 129" displacement.
- Enjoy easy installation with a bolt-on design that requires no crankcase machining.
- Maintain your engine's originality with retained serial numbers.
- Ensure a reliable seal with included MLS (multi-layered steel) head gaskets.
- Complete kit includes all necessary gaskets and hardware for a seamless installation.
- Showcases a durable wrinkle black powder-coated finish.
- Proudly made in the USA with high-quality materials and craftsmanship.
Technical specifications
- Brand: S&S Cycle
- Product Name: Cylinder Kit
- Type: Big Bore
- Displacement: 129"
- Bore Size: 4.320"
- Stroke Length: 4.375"
- Compression Ratio: 11.0:1
- Finish: Powder-Coated
- Color/Finish: Wrinkle Black, Non-Highlighted Fins
- Units: Kit
Important to know
This kit requires proper installation and tuning for optimal performance. Professional installation is recommended. Ensure compatibility with your specific motorcycle model before purchasing.
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
Parts Denmark Info
Parts Denmark Info
Parts Denmark is a new webshop based in Denmark. We have a physical location you can visit (No showroom yet), and we have both email and phone support in our opening hours.
Our company info is:
Parts Denmark ApS
VAT: DK45974758
Dam Holme 11
3660 Stenløse, Denmark
hello@partsdenmark.com
+45 222 333 29
Best regards,
William Svendsen & Martin Høyer (Owners)
Specifications
S&S CYCLE
910-0844
Cylinder Kit
4,320"
11.0:1
129"
4,375"
Powder-Coated
Big Bore
Kit


Who is behind Parts Denmark
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.

