Manley Pistons 99.75mm +.25mm Bore 9.8:1 Dish Extreme Duty Subaru WRX / STI EJ257 vendor_H&R It is designed and built

It is designed and built with the intention of increasing the boost output of a turbocharged system

This kit DOES NOT INCLUDE a water pump

3mm inner diameter tubing

With over 20 years of Subaru tuning expertise

Required: 1 per axle

Manley Pistons 99.75mm +.25mm Bore 9.8:1 Dish Extreme Duty Subaru WRX / STI EJ257 vendor_H&R It is designed and builtPart #: 632302CE 4 The best aftermarket Subaru piston company just got even better with our new Turbo Tuff lineup targeted specifically for EJ25 engines. By incorporating proven design enhancements from our "Formula Won" piston forging, we've created the ultimate Subi piston to withstand the rigors of the highest boosted and stressed applications yet still run "quietly" and trouble free for the daily driver. Like all Manley Subaru pistons, these are