What does Moly Faced mean for these piston rings?

Moly Faced means the rings are coated with a molybdenum compound. This coating helps reduce friction and wear, improves heat tolerance, and ensures a better seal against the cylinder wall for improved engine performance.

Are these rings a standard size?

No, these rings are .030 inch oversize. This means they are intended for use in engine cylinders that have been machined to a .030 inch larger diameter than their original size.

What is the benefit of improved wear resistance and heat tolerance?

Improved wear resistance means the rings will last longer under normal operating conditions. Better heat tolerance helps prevent the rings from expanding excessively or losing their temper under high engine temperatures, maintaining a proper seal and preventing damage.

S&S Cycle Piston Ring Set Moly Faced .030in 94-1303X

Name: S&S Cycle 84-99 BT 4in Piston Ring Set - .030in
Brand: S&S Cycle
SKU: s-s-cycle-s-s-cycle-84-99-bt-4in-piston-ring-set-030in-t14-661771
Price: 68.66 USD
Availability: BackOrder

S&S Cycle 84-99 BT 4in Piston Ring Set - .030in

$68.66

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

S&S Cycle Moly Faced piston ring set, .030in oversize. Improves wear resistance and heat tolerance.

Key Features

Fits 1984-1999 Big Twin engines.
Moly Faced coating offers improved wear resistance and heat tolerance.
Enhances sealing capabilities between piston and cylinder wall.
Designed for cylinders bored to a .030 inch oversize dimension.
Part number 94-1303X.

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Product Details

If you're rebuilding the top end of your 1984-1999 Big Twin engine, a fresh set of piston rings is essential. These Moly Faced rings from S&S Cycle are designed to give your engine a new lease on life, ensuring proper sealing and efficient combustion. They are specifically sized at .030 inch oversize, meaning they're intended for cylinders that have been bored out to match this dimension.

The key feature here is the Moly Faced coating. Molybdenum is known for its ability to reduce friction and wear, especially under high heat and pressure conditions common in an engine's combustion chamber. This coating helps the rings seat properly against the cylinder wall, improving heat transfer away from the piston and enhancing the seal between the piston and cylinder. This means better compression, more consistent power delivery, and potentially longer engine life.

When installing these rings, remember they are .030 inch oversize. Ensure your cylinders have been machined to this specific size for a correct fit. Proper installation is crucial for the performance and longevity of these rings and your engine.