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

File-fit means the ends of the piston rings are not pre-gapped. You will need to measure your cylinder bore and carefully file the ends of the rings to achieve the correct gap for your specific engine. This allows for a more precise seal.

What materials are the piston rings made from?

The top ring is carbon steel chrome, the second ring is iron chrome, and the oil ring is carbon steel chrome. This combination is chosen for sealing performance and durability.

Are these rings suitable for a stock engine rebuild?

While these rings are designed for performance and precision sealing, they can be used in a stock engine rebuild if you are comfortable with the file-fitting process. They offer improved sealing over standard rings.

JE Pistons Piston Rings 1.2-1.5-4.0-77.50 JC1604-3051

Name: JE Pistons Ring Sets 1.2-1.5-4.0-77.50
Brand: JE Pistons
SKU: je-pistons-je-pistons-ring-sets-1-2-1-5-4-0-77-50-t14-297896
Price: 144.69 USD
Availability: BackOrder

JE Pistons Ring Sets 1.2-1.5-4.0-77.50

$144.69

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 file-fit piston ring set for 4-cylinder engines. Maximizes horsepower through precision sealing.

Key Features

Fits 4-cylinder engines requiring file-fit piston rings.
Top ring is 0.0472 inch carbon steel chrome.
Second ring is 0.0591 inch iron chrome.
Oil ring is 0.1575 inch carbon steel chrome with low tension.
Designed to maximize horsepower through precision sealing.
File-fit design allows for custom gapping to match cylinder bore.

⚠️ 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 4-cylinder engine, getting the right piston rings is crucial for sealing combustion pressure and maximizing horsepower. These file-fit rings from JE Pistons are designed for that exact purpose. They offer a way to achieve a precise seal, which is key to getting the most out of your engine build.

This set features a 0.0472-inch carbon steel chrome top ring, a 0.0591-inch iron chrome second ring, and a 0.1575-inch carbon steel chrome low tension oil ring. The file-fit design means you'll need to gap these rings yourself to perfectly match your cylinder bore, a common practice for performance builds to ensure optimal sealing and prevent blow-by. JE Pistons uses the same techniques for these rings as top racing teams, aiming for reduced friction and improved durability.

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 gapping and fitting procedures.