S&S CYCLE - 920-0145 - Big Bore Kit - 90.00 mm - 865 cc - Royal Enfield 650 Twin
For riders who demand quality in every component, the S&S CYCLE 920-0145 is a big bore kit built to the standards that experienced powersports enthusiasts recognize the moment they put it in their hands. Increases bore from stock. Increase compression ratio from 9.5:1 to 11.0:1, giving you a level of quality that holds up across the full service life of the component. Kit includes cylinder sleeves, pistons and head gasket. Bore Size: 90.00 mm. Stroke Length: 67.80 mm. Whatever the application demands, the 920-0145 gives you a component built to meet it. Sold as a complete kit.
Features
- Increases bore from stock
- Increase compression ratio from 9.5:1 to 11.0:1
- Kit includes cylinder sleeves, pistons and head gasket
- Made in the USA
Specs
- Bore Size: 90.00 mm
- Stroke Length: 67.80 mm
- Riding Style: Street
- Product Name: Big Bore Kit
- Displacement: 865 cc
- Compression Ratio: 11.0:1
- Units: Kit
Frequently Asked Questions - S&S CYCLE - 920-0145 - Big Bore Kit - 90.00 mm - 865 cc - Royal Enfield 650 Twin
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.
