Cosworth 99.5mm Performance Piston Ring Set For Cosworth Pistons Subaru WRX STI 2.5L EJ25 04+
High performance piston ring set for Cosworth pistons.
Bore size: 99.5mm
Over the last 50 years Cosworth have developed an in-depth knowledge of engines, electronics and a range of high performance technologies. This has been used to supply some of the most successful motor sport teams and vehicle manufacturers in history.
Our unprecedented success has fueled customer demand globally from diverse market sectors designing and developing technologies and components for aerospace, automotive, defense and sport applications.