S&S CYCLE - 91-9024 - Cylinders and Pistons - 80” - Low Compression
Engine rebuilds done right start with the right piston, and the S&S CYCLE 91-9024 delivers the precision that top-tier aftermarket suppliers build their reputation on. Intended to replace the cylinders and pistons of a 80” Shovelhead engine and maintain the stock compression ratio of 8:1, ensuring dimensional accuracy from the first start-up. Compatible with stock or S&S cylinder heads, which means it holds tight tolerances longer and runs cooler. Includes S&S 3.5” bore high tensile cast iron cylinders, 3.5” bore forged standard compression pistons for 80” (4.25” stroke) engines with rings and wristpins, head gaskets, S&S stainless steel bolts with washers, base nuts and base gaskets, and made in the U.S.A. helps the new piston seat properly during break-in. Material: Cast Iron. Whether refreshing a worn top-end or building a motor from scratch, the 91-9024 gives you a solid foundation for a long-lasting engine. Sold as a complete kit.
Features
- Intended to replace the cylinders and pistons of a 80” Shovelhead engine and maintain the stock compression ratio of 8:1
- Compatible with stock or S&S cylinder heads
- Includes S&S 3.5” bore high tensile cast iron cylinders, 3.5” bore forged standard compression pistons for 80” (4.25” stroke) engines with rings and wristpins, head gaskets, S&S stainless steel bolts with washers, base nuts and base gaskets
- Made in the U.S.A.
Specs
- Material: Cast Iron
- Product Name: Cylinder and Piston Kit
- Compression Ratio: 8.0:1
- Style: Stock
- Color/Finish: Powder-Coated
- Stroke Length: 4-1/4”
- Displacement: 80”
- Bore Size: 3.500”
- Units: Kit
- Type: Replacement
- Riding Style: Street
Frequently Asked Questions - S&S CYCLE - 91-9024 - Cylinders and Pistons - 80” - Low Compression
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.
