What is the main function of piston rings?

Piston rings have two main jobs: they seal the combustion chamber to keep pressure from leaking past the piston, and they scrape excess oil off the cylinder walls as the piston moves. This ensures efficient engine performance and prevents oil from burning in the combustion chamber.

Are these rings compatible with all engines?

No, these rings are specifically sized for pistons with a 3.937 inch diameter. It's important to confirm that this size matches your engine's piston specifications before purchasing.

What does 'Not CARB approved' mean?

This means the part does not meet the emissions standards set by the California Air Resources Board (CARB). As a result, it cannot be legally shipped to or installed in California.

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Specifications

Brand: S&S Cycle
Part #: 940-0032
UPC: 940-0032

S&S Cycle 3.937in Ring Set

Name: S&S Cycle 3.937in Ring Set
Brand: S&S Cycle
SKU: s-s-cycle-s-s-cycle-3-937in-ring-set-t14-662111
Price: 87.86 USD
Availability: BackOrder

$87.86

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 3.937in Ring Set. Ensures a proper seal for your engine's pistons.

Key Features

Fits pistons with a 3.937 inch diameter.
Designed to create a proper seal between the piston and cylinder wall.
Helps maintain combustion pressure for efficient engine operation.
Prevents oil from entering the combustion chamber.

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About this part

Product Details

With a 3.937 inch diameter, this S&S Cycle ring set is built to fit specific piston applications. These rings are crucial for creating a tight seal between the piston and the cylinder wall. This seal is what keeps combustion pressure where it belongs, pushing the piston down, and prevents oil from getting into the combustion chamber where it would burn and cause issues.

S&S Cycle is known for making well-built engine components, and this ring set is no different. They are designed to provide a solid seal and help your engine run efficiently. Proper ring seal means better compression, which translates to more power and smoother operation. When you're rebuilding or refreshing an engine, getting the right rings is a key step for long-term reliability.