Building or rebuilding an engine? Check out these Mahle Motorsports piston rings. Designed for a 4.040-inch bore, this low-tension set uses .043, .043, and 3.0mm rings to reduce friction and free up horsepower. The top ring is ductile iron with a plasma moly barrel face, the second is a cast iron reverse twist, and the oil ring is a three-piece low-tension design. Made with precision engineering and computer simulation, these rings provide excellent sealing and durability for racing or high-performance street engines. Whether you're on the dyno or the track, these rings help your engine perform at its best. Includes detailed specs and comes in a compact package. Upgrade your build with Mahle quality.
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