What does 'file-fit' mean for these piston rings?

File-fit means the rings are not pre-gapped to a specific size. You will need to carefully measure your cylinder bore and use a ring-gapping tool to adjust the end gap of the top and second rings to the manufacturer's recommended specification for your engine build.

What is the advantage of the plasma moly coating on the top ring?

The plasma moly coating on the ductile iron top ring helps to reduce friction and wear, while also improving its ability to seal combustion pressures effectively. This contributes to better engine performance and increased durability.

What other parts are typically needed when installing new piston rings?

When installing new piston rings, it's common practice to also replace piston rings, rod bearings, and main bearings. It's also a good time to inspect cylinder walls for wear and ensure they are properly honed for the new rings.

JE Pistons Piston Ring Set J100F8-4145-5

Name: JE Pistons Ring Sets 1/16-1/16-3/16 RING
Brand: JE Pistons
SKU: je-pistons-je-pistons-ring-sets-1-16-1-16-3-16-ring-t14-296717
Price: 224.99 USD
Availability: BackOrder

JE Pistons Ring Sets 1/16-1/16-3/16 RING

$224.99

On Backorder

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

JE Pistons Ring Sets 1/16-1/16-3/16 RING for 8-cylinder engines. Maximizes horsepower with precision sealing.

Key Features

Fits 8-cylinder engines.
Top ring is 0.064 inch ductile iron with plasma moly coating.
Second ring is 0.064 inch iron phosphate.
Oil ring is 0.188 inch carbon steel with standard tension.
Rings are file-fit, requiring gapping to match cylinder bore.
Designed to maximize horsepower through precise combustion sealing.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

When you're rebuilding the top end of your engine, getting the piston rings seated correctly is crucial for performance and longevity. These JE Pistons ring sets are built to ensure a tight seal between your pistons and cylinder walls, which is key to maximizing horsepower by keeping combustion pressure where it belongs. They're designed for 8-cylinder applications and come in a common 1/16-1/16-3/16 inch size, ready for your build.

This particular set features a 0.064 inch ductile iron plasma moly top ring, known for its strength and ability to handle high temperatures. The second ring is also 0.064 inch, made from iron phosphate for good sealing. For the oil ring, you get a 0.188 inch carbon steel standard tension ring, which effectively scrapes oil from the cylinder walls. JE Pistons uses the same techniques for these rings that top racing teams rely on, aiming for improved durability and reduced friction for better power output.

Remember, these rings are file-fit, meaning you'll need to gap them to your specific cylinder bore dimensions during installation. This ensures the best possible seal for your engine. Please note that these are not CARB approved and cannot be shipped to California.