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

File-fit rings are designed to be custom-gapped by the installer to precisely match the cylinder bore of your engine. This allows for optimal sealing and performance tailored to your specific build, a common practice in performance engine building.

What materials are used for the different rings in this set?

This set includes a carbon steel nitride top ring, an iron phosphate second ring, and a carbon steel chrome standard tension oil ring. These materials are chosen for their specific properties related to heat resistance, sealing, and wear.

Are these rings suitable for all engine types?

While JE Pistons offers a wide selection of ring sizes and types, this specific set is designed for engines requiring these particular dimensions and material specifications. It's important to verify that these dimensions match your piston and cylinder bore requirements for your engine rebuild.

JE Pistons Piston Ring Set JG31F8-4070-0

Name: JE Pistons Ring Sets 1.2-1.5-3.0-103.37
Brand: JE Pistons
SKU: je-pistons-je-pistons-ring-sets-1-2-1-5-3-0-103-37-t14-298149
Price: 286.23 USD
Availability: InStock

JE Pistons Ring Sets 1.2-1.5-3.0-103.37

$286.23

Only 1 left in stock

JE Pistons ring sets are for engine rebuilds. This file-fit set helps maximize horsepower through precise sealing.

Key Features

File-fit piston ring set for custom engine builds.
Top ring is 0.0472 inch carbon steel nitride for durability and sealing.
Second ring is 0.0591 inch iron phosphate for wear resistance.
Oil ring is 0.1181 inch carbon steel chrome standard tension.
Designed to maximize horsepower through precise combustion pressure sealing.
Not CARB approved; cannot ship to California.

⚠️ 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 designed to create a tight seal between your pistons and cylinder walls, which is key to maximizing horsepower by keeping combustion pressure where it belongs. They're built with specific materials for each ring position to handle the demands of the combustion chamber.

This particular set features a 0.0472-inch carbon steel nitride top ring, known for its durability and ability to seal under high heat. The second ring is 0.0591-inch and uses an iron phosphate coating for good wear resistance. For the oil control, you get a 0.1181-inch carbon steel chrome standard tension oil ring. Because these are file-fit rings, they allow for precise gap adjustment to match your specific cylinder bore size and application, which is a technique used by many professional racing teams to achieve optimal sealing and reduced friction.

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 file-fitting and installation procedures to ensure the best results for your engine build.