S&S CYCLE - 106-3690 - Piston Kit - For 106” Big Bore Kit - 3.927” - Standard
A quality piston kit is the heart of any engine rebuild, and the S&S CYCLE 106-3690 is engineered to deliver OEM-level fit, finish, and durability ready to drop straight into your engine. Piston kit includes forged pistons (unless noted) rings, wrist pins and clips for a complete motor replacement, ensuring dimensional accuracy from the first start-up. Made in the U.S.A, which means it holds tight tolerances longer and runs cooler. Displacement: 106”, and piston Head Shape: Flat Top helps the new piston seat properly during break-in. Type: Replacement. Whether refreshing a worn top-end or building a motor from scratch, the 106-3690 gives you a solid foundation for a long-lasting engine. Sold as a complete kit.
Features
- Piston kit includes forged pistons (unless noted) rings, wrist pins and clips for a complete motor replacement
- Made in the U.S.A
Specs
- Displacement: 106”
- Piston Head Shape: Flat Top
- Type: Replacement
- Units: Kit
- Bore Size: 3.927”
- Riding Style: Street
- Piston Material: Forged
- Bore - Oversize: Standard
- Bore Oversize: Standard
- Product Name: Piston Kit
Frequently Asked Questions - S&S CYCLE - 106-3690 - Piston Kit - For 106” Big Bore Kit - 3.927” - Standard
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.
