Wiseco 4-stroke piston ring sets are made specifically to Wiseco’s specifications to provide ultimate performance and sealing with Wiseco’s wide variety of 4-stroke pistons. From compression and sealing to oil control, rings can make or break piston performance, which is why Wiseco rings are developed and tested for race-ready performance. A complete range of forged pistons engineered for each specific 2-stroke powersports engine; Covering hundreds of applications across ATV, Dirt Bike, Street, Snowmobile, UTV, V-Twin and more in a variety of bore size and complression ratio options; Forged material optimizes strength and service life; Performance enhancing features varied across applicable applications to maximize durability and power; Wrist pin, rings and circlips included Specification Product Series 2 Stroke Forged Series Bore Diameter 75.00 MM Top Compression Ring Thickness 1.0 MM Top Ring Material Stainless Steel Second Compression Ring Thickness 1.2 MM Second Ring Material Cast Iron Oil Ring Thickness 2.8 MM Third Ring Material Stainless Steel Product Type Ring Sets Product Market ATV/UTV