What does 'moly faced' mean for these piston rings?

Moly faced means the rings have a coating of molybdenum compound. This coating helps improve wear resistance, heat tolerance, and sealing capabilities within the cylinder.

Why is the .005in size important?

The .005 inch size indicates these rings are slightly larger than standard bore size. This is typically used when rebuilding an engine with pistons that have also been machined to match this specific oversize dimension for a precise fit.

Can these rings be shipped to California?

No, these piston rings are not CARB approved and cannot be shipped to California due to emissions regulations.

S&S Cycle Piston Ring Set Moly Faced .005in 94-1299X

Name: S&S Cycle 1999+ BT 3-7/8in Piston Ring Set - .005in
Brand: S&S Cycle
SKU: s-s-cycle-s-s-cycle-1999-bt-3-7-8in-piston-ring-set-005in-t14-661810
Price: 75.74 USD
Availability: BackOrder

S&S Cycle 1999+ BT 3-7/8in Piston Ring Set - .005in

$75.74

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 for 1999+ Big Twin models. .005in size. Not CARB approved.

Key Features

Moly faced piston rings offer improved wear resistance and heat tolerance.
Molybdenum compound coating enhances sealing capabilities against the cylinder wall.
This set is .005 inch oversize, intended for specific engine rebuilds.
Designed for 1999 and newer Big Twin engine applications.
Not CARB approved; cannot ship to California.

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Product Details

These S&S Cycle piston rings are moly faced, meaning they have a coating of molybdenum compound. This advanced coating is known for improving wear resistance, helping the rings last longer even under tough conditions. It also boosts heat tolerance, so they can handle the high temperatures inside an engine, and helps them seal better against the cylinder wall. This set is specifically sized at .005 inch oversize, which is important when rebuilding or replacing pistons in your 1999 and newer Big Twin engine. Proper sizing is key for good compression and oil control.

When you're rebuilding the top end of your engine, getting the right piston ring set is crucial for performance and longevity. The moly coating on these rings helps them break in smoothly and maintain a tight seal over time, which means better compression and less oil burning. Because they are .005 inch oversize, they are intended for use with pistons that have also been machined to that same dimension, ensuring a precise fit within the cylinder bore. This attention to detail in sizing and material helps ensure your engine runs strong.