Specifications
- Brand
- S&S Cycle
- Part #
- 94-1204X
- UPC
- 94-1204X

S&S Cycle 66-84 BT 3-5/8in Piston Ring Set - .040in
$55.53
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S&S Cycle Moly Faced piston ring set, .040in. Offers improved wear resistance and heat tolerance.
Key Features
- This piston ring set is .040 inch oversize.
- Features a Moly coating for improved wear resistance and heat tolerance.
- The Moly facing helps enhance sealing capabilities for better engine performance.
- Designed for use with 66-84 Big Twin engine platforms.
- Not CARB approved; cannot ship to California.
Product Details
These S&S Cycle piston rings are faced with a molybdenum compound. This Moly coating is a smart choice because it really helps the rings stand up to wear and tear, and it can handle higher temperatures better than plain rings. That means they seal up the combustion chamber more effectively, which is key for getting good performance and keeping your engine running smoothly.
This set is specifically sized at .040 inch oversize, meaning it's intended for engines where the cylinders have been bored out to accommodate this size. The Moly coating also contributes to better heat tolerance and improved sealing capabilities, helping to maintain consistent compression and reduce blow-by. It's a well-built component designed to work within the 66-84 Big Twin engine platform.
Specifications
- Brand
- S&S Cycle
- Manufacturer Part #
- 94-1204X
- UPC
- 94-1204X
Frequently Asked Questions
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S&S Cycle 66-84 BT 3-5/8in Piston Ring Set - .040in



