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

Moly facing refers to a coating of molybdenum on the ring surface. This material is chosen for its excellent lubricating properties, which helps reduce friction between the piston ring and cylinder wall. It also contributes to improved wear resistance, helping the rings last longer.

Are these rings suitable for high-performance builds?

These rings are standard size and moly faced, which are beneficial for engine longevity and performance. For highly specialized or extreme performance applications, it's always best to consult with S&S Cycle or an engine builder to ensure they meet your specific build requirements.

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Specifications

Brand: S&S Cycle
Part #: 940-0056
UPC: 940-0056

S&S Cycle 4in Piston Ring Set - 1 Pack

Name: S&S Cycle 4in Piston Ring Set - 1 Pack
Brand: S&S Cycle
SKU: s-s-cycle-s-s-cycle-4in-piston-ring-set-1-pack-t14-662243
Price: 118.18 USD
Availability: BackOrder

$118.18

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 4in Piston Ring Set - 1 Pack. Moly faced rings for 1999-2017 Big Twin engines.

Key Features

Fits 1999-2017 Big Twin engines.
Features a moly faced surface for improved wear resistance and reduced friction.
Standard size rings designed for 4-inch pistons.
Sold as a 1-pack set.

This piston ring set is designed for 1999-2017 Big Twin engines. Always confirm compatibility with your specific vehicle's engine specifications.

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About this part

Product Details

The moly facing on these S&S Cycle piston rings is a key detail for engine builders. This material is known for its ability to reduce friction and improve wear resistance, which is crucial for the longevity of your Big Twin engine, especially in the 1999-2017 models this set is designed for.

When you're rebuilding the top end of your engine, the piston rings are a critical component. They seal the combustion chamber, transfer heat from the piston to the cylinder wall, and regulate oil consumption. This set from S&S Cycle is built to standard specifications, ensuring a proper fit and function for your engine's needs. The 4-inch diameter is specific to certain Big Twin applications, so make sure this matches your piston size.

Keep in mind that this part is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.