Mahle is one of the most respected names in piston manufacturing. This is why we at PPE have partnered with them to produce an open-bowl, low-compression racing piston designed for high boost applications. With a compression ratio of only 15.5:1 (stock can be 17.5:1), it means you can fully pack the cylinders with fuel and turbocharged air to achieve those ultra-high horsepower and torque numbers. Other options include custom compression ratios and can be had with or without valve reliefs. Kit includes rings, pistons, pin clips and wrist pins.