The Enginetech S86534 Premium Piston Ring Set is designed for 1993-2006 Mitsubishi vehicles with the 2.4L 2351 SOHC L4 16V engine (4G64), including models such as the Mitsubishi Galant, Eclipse, Montero Sport, and Expo. This premium set features chrome or steel-top piston rings with a 1.2mm top ring, 1.5mm second ring, and 2.8mm oil ring, optimized for durability, low friction, and superior sealing in a 3.406" (86.5mm) bore. Engineered to meet or exceed OEM specifications, the S86534 enhances engine performance and longevity in demanding applications. Ideal for professional mechanics and enthusiasts rebuilding Mitsubishi 2.4L engines. Note: Confirm bore size and engine code before ordering.