Manley 87.5mm File Fit 1.2mm x1.2mmx2.8mm Standard (7-11lbs) Ring Set

If you're rebuilding the top end of your engine, getting the piston rings seated correctly is crucial for sealing combustion pressure and controlling oil. This set from Manley is designed for a 87.5mm bore, and the 'file fit' designation means you'll be able to precisely gap them to your specific application, which is key for performance builds. They feature a common 1.2mm top ring, 1.2mm second ring, and a 2.8mm oil ring, a popular configuration for many performance engines that typically weigh between 7 and 11 pounds.

Manley is well-known for making solid internal engine components, and these rings are no exception. The file-fit design is a practical choice for builders who want to dial in their ring seal for maximum efficiency and power. It's important to note that these rings are not CARB approved, so they cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper gapping and seating procedures.