Michigan Motorsports LS Performance Piston Ring Set - Fits 1999-2013 4.8L & 5.3L Gen 3/4 LS Engines - LC9 L33 LM7 LR4 L59 LS4 LMG Many More! - Steel Nitrided Top Ring & Napier Second

The Michigan Motorsports Performance Piston Ring Set is built for enthusiasts and engine builders who demand precision, strength, and longevity from their LS short blocks. Featuring a steel nitrided top ring and Napier-style second ring, this set is engineered to handle the heat, pressure, and abuse of performance applications, including forced induction and stroker builds. The nitrided top ring resists micro-welding and delivers exceptional wear resistance, making it ideal for high RPM, boosted, or nitrous-fed engines. Meanwhile, the Napier second ring improves oil control and seating efficiency, helping reduce blow-by and enhance combustion integrity. This set fits most 1999–2013 4.8L and 5.3L Gen 3/4 LS engines, including popular platforms like LM7, L59, LR4, LMG, LS4, LC9, L33, and more. Whether you're rebuilding a stock short block, assembling a boosted street machine, or prepping for track duty, this ring set is built to seal it up and hold it down.

• Performance-Built Piston Ring Set – Designed for street/strip and high-performance LS builds, this ring set delivers superior cylinder sealing, oil control, and durability under load.
• Steel Nitrided Top Ring – Precision-machined top ring is nitrided for wear resistance, ensuring long-term sealing performance in both NA and boosted engine setups.
• Napier-Style 2nd Ring – Features a Napier-style second ring for improved oil scraping, reduced blow-by, and better ring seating during initial break-in.
• Fits 4.8L & 5.3L Gen 3/4 LS Engines – Compatible with LS-based engines including LC9, L33, LH6, LM7, L20, LR4, L59, LM4, LS4, LY2, LMG, and LMF from 1999 to 2013.
• Ideal for Rebuilds, Stroker Kits & Forced Induction – Whether you’re freshening up a high-mileage block or building for boost, these rings are made to handle increased cylinder pressure.