S&S CYCLE - 910-0642 - 4” Big Bore Bolt-In Sidewinder Cylinder Kit - 100” - Silver
The S&S CYCLE 910-0642 is a purpose-built cylinder and piston kit designed and tested to perform correctly in the conditions and applications it was made for. Bolt in - no machining, balancing or splitting the crankcases; install can be performed with engine still in frame. Cast Ductile Iron Sleeve in cast aluminum for superior heat transfer, giving you a level of quality that holds up across the full service life of the component. 10.5:1 compression (w/ stock 85cc heads) makes for a very streetable and dependable engine that also responds well to performance cams. Complete kit includes cylinders, forged pistons, rings, piston pins, clips and gaskets. Not for use with S&S 79cc heads.. The 910-0642 delivers exactly what riders need from a quality aftermarket component. Sold as a complete kit.
Features
- Bolt in - no machining, balancing or splitting the crankcases; install can be performed with engine still in frame
- Cast Ductile Iron Sleeve in cast aluminum for superior heat transfer
- 88” engines are boosted to 100”
- 96” and 103” engines are boosted 110”
- 10.5:1 compression (w/ stock 85cc heads) makes for a very streetable and dependable engine that also responds well to performance cams
- Complete kit includes cylinders, forged pistons, rings, piston pins, clips and gaskets
- Not for use with S&S 79cc heads.
Specs
- Displacement: 100”
- Color/Finish: Silver
- Compression Ratio: 10.5:1
- Product Name: Cylinder and Piston Kit
- Riding Style: Street
- Stroke Length: 4”
- Bore Size: 4.000”
- Model: Sidewinder
- Type: Big Bore
- Units: Kit
Frequently Asked Questions - S&S CYCLE - 910-0642 - 4” Big Bore Bolt-In Sidewinder Cylinder Kit - 100” - Silver
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.
