JE Pistons has announced the release of their new "SRP Professional" piston kits for the Mitsubishi 4G63T and 4B11T engines. After over a year of design, development and dyno testing the new pistons are now available for purchase. Every SRP Professional piston kit includes a lightweight forged side relief (FSR) forging, premium wrist pins, and high performance JE Pro Seal Rings. The pistons offer a 9.0:1 compression ratio that is perfect for high performance turbocharged engines that run on pump or race gas. All SRP Professional piston kits are engineered and manufactured at the advanced JE Pistons facility in Huntington Beach, California.