Mahle MS Custom Piston Set Audi RS3 TTRS 2.5L (Set of 5)

Mahle pistons are meticulously engineered as a completely finished, drop-in forged piston assembly. These pistons come with a high-performance piston ring set. Leveraging over 80 years of piston manufacturing experience, from OEM applications to Formula 1 racing, Mahle incorporates cutting-edge technology into their designs. Key features include an anti-friction skirt coating to minimize drag, construction from M142 low expansion aluminum alloy for superior strength and optimized piston-to-wall clearance, and a forced pin oiler for enhanced wrist pin lubrication. The pin bores are CNC precision-machined. Each set includes a 20mm High-Quality Steel Wrist Pin (weighing 98g), a performance ring set (1.0mm, 1.2mm, 2.8mm) with a steel nitrided top ring, and Race Proven Round Wire Locks. The pistons are designed for a stock compression ratio of 10.3:1.