JE Pistons J10008-4390-5 Premium Race Series Piston Ring Set

JE Pistons J10008-4390-5 Premium Race Series piston rings are designed for applications using a 4.390-inch bore. This file-fit ring set features a 1/16-inch top ring, 1/16-inch second ring, and 3/16-inch oil ring configuration.

Manufactured with ductile iron and a plasma moly facing, these piston rings combine durable materials with a low-tension design. The file-fit construction allows ring-gap adjustment during installation according to the engine builder’s requirements.

This kit is configured for 8-cylinder applications and provides a complete piston ring set for compatible engine builds. Verify bore size, ring configuration, and application requirements before installation.

Features:

• Application: Designed for a 4.390-inch bore
• Series: Premium Race Series
• Ring Configuration: 1/16-inch top ring, 1/16-inch second ring, and 3/16-inch oil ring
• Fitment Style: File fit
• Tension: Low tension
• Material: Ductile iron
• Facing: Plasma moly
• Cylinder Coverage: Configured for 8-cylinder applications
• Product Type: Piston ring set