Cosworth Forged Piston Set 99.5mm 9.2:1 CR Subaru Turbo 2.5L (inc. 2006-2014 WRX / 2004-2015 STI)
The piston is one of the most important components within an engine. It can be subjected to directional change up to 285 times every second and must withstand acceleration forces up to 8500g. Cosworth high performance forged pistons are designed and engineered to withstand this type of punishment and still perform. All Cosworth forged pistons are manufactured using the same methods as their Formula One pistons and feature friction reducing skirt coating, ultra strong pins, polished tops and patented anti-detonation bands. Additionally, each application uses a unique forging to minimize weight and ensure the strongest possible piston design.
Proprietary Cosworth alloy
High strength pin
Includes: Pistons, Wrist Pins, Circlips
Ring kit 20001515 Sold Separately and required for installation.