S&S CYCLE - 910-0691 - Cylinder Kit - 1200 cc Conversion - 10.3:1 Compression Ratio - Wrinkle Black - XL
The S&S CYCLE 910-0691 is a cylinder kit - 1200 cc conversion - 10.3:1 compression ratio - wrinkle black - xl engineered for street applications where fit, function, and build quality are the baseline expectation. Converts '86-'21 883 cc and 1200 cc Sportster models to 1250 cc displacement. Forged pistons have larger than stock valve pockets and accepts up to 2.00” valves, giving you a level of quality that holds up across the full service life of the component. Forged pistons - coated piston skirts with measurement window and S&S logo. No machining or rebalancing is required. Kit includes S&S 1250 cc pistons with rings and wristpins, S&S 3-9/16” bore cylinders, MLS (Multi-Layer Steel) head, base and exhaust gaskets, assembly lube and instructions. For riders who know the difference quality components make, the 910-0691 is the right call. Sold as a complete kit.
Features
- Converts '86-'21 883 cc and 1200 cc Sportster models to 1250 cc displacement
- Forged pistons have larger than stock valve pockets and accepts up to 2.00” valves
- Forged pistons - coated piston skirts with measurement window and S&S logo
- No machining or rebalancing is required
- Kit includes S&S 1250 cc pistons with rings and wristpins, S&S 3-9/16” bore cylinders, MLS (Multi-Layer Steel) head, base and exhaust gaskets, assembly lube and instructions
- Made in the USA
- Will not work with XR1200 models.
- 883 models will require the use of XL1200 cylinder heads to achieve correct compression ratios.
- For the best performance CNC head porting, performance cams, exhaust and intake upgrades are recommended.
Specs
- Material: Cast
- Product Name: Cylinder Kit
- Style: Big Bore
- Bore Size: 3.562”
- Displacement: 1250 cc
- Units: Kit
- Material: Aluminum
- Type: Flat Top
- Stroke Length: 3-13/16”
- Color/Finish: Black
- Material: Iron
- Riding Style: Street
- Compression Ratio: 10.3:1
Frequently Asked Questions - S&S CYCLE - 910-0691 - Cylinder Kit - 1200 cc Conversion - 10.3:1 Compression Ratio - Wrinkle Black - XL
How do I know if this part fits my vehicle?
Check the fitment information listed on this page against your exact year, make, model, and (where applicable) trim, engine size, or configuration. If your exact vehicle isn't listed, or you're not sure, use the product chat on this page or contact our support team before ordering - we're glad to help confirm fitment.
What does it mean if a product is listed as universal fit?
Universal fit means the product is designed to work across a range of vehicles, not that it's guaranteed to fit every one. Compare the listed measurements, mounting requirements, and connector or hardware specs against your specific vehicle before ordering, since some installations may need additional hardware or minor fabrication.
Where can I find installation instructions for this product?
General installation notes are provided above where available. For detailed step-by-step instructions, refer to the manufacturer's documentation included with the product, or use the product chat on this page for questions about difficulty, required tools, or whether professional installation is recommended.
What if I have more questions about this product?
Use the product chat on this page for fitment, specs, installation, and compatibility questions, or contact our support team directly for help before you order.
