What is the benefit of a moly face on piston rings?

A moly face on the top ring is a tough coating that helps the ring seat quickly and resist wear. This leads to a better seal in the cylinder and improved durability over time, especially in engines that see regular use or higher performance demands.

Why is a low tension ring design important?

Low tension rings are designed to exert less pressure against the cylinder wall. This reduces friction, which can contribute to improved fuel efficiency and a slight increase in overall engine power by reducing parasitic drag.

Are these rings suitable for a stock engine rebuild?

While designed for performance, these rings can be used in a stock rebuild if the engine specifications call for a 4.125 bore and you're looking for improved durability and sealing. Always ensure they match your specific engine's requirements.

Mahle Pro Series Piston Rings Moly 4.125 Bore 3150067.035

Name: Mahle Rings Pro Series Performance Ring Low Tension 4.125 Bore Moly Ring Set
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-pro-series-performance-ring-low-tension-4-125-bore-moly-rin-t14-47533
Price: 188.24 USD
Availability: BackOrder

Mahle Rings Pro Series Performance Ring Low Tension 4.125 Bore Moly Ring Set

$188.24

On Backorder

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

Mahle Pro Series Piston Rings feature a moly face for improved durability and low tension design. For 4.125 bore engines.

Key Features

Fits 4.125 inch bore engines.
Features a moly face on the top ring for improved wear resistance and sealing.
Low tension design helps reduce friction and improve efficiency.
Designed for performance and heavy-duty applications.
Mahle OE brand is known for well-built engine components.

Secure CheckoutFast Shipping631-982-0042

Product Details

These Mahle Pro Series piston rings are built with a moly face, a tough material that holds up well against wear, especially in performance applications. The low tension design helps reduce drag inside the cylinder, which can lead to improved engine efficiency and a bit more power. They're made to fit a 4.125 inch bore, a common size for many performance and heavy-duty engines.

When you're rebuilding an engine, especially one that's going to see more demanding use, the piston rings are a critical component. They seal the combustion chamber, control oil consumption, and transfer heat from the piston to the cylinder wall. Mahle has a solid reputation for making well-built engine parts, and this Pro Series set is designed for those looking for reliable performance. The moly coating on the top ring is a notable detail that helps it seat quickly and maintain a good seal over time.

Keep in mind that these rings are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper seating and break-in procedures to get the best performance and longevity from your new rings.