Manley Subaru WRX STi (EJ257) 99.5mm Bore STD Size 8.5 CR 83mm Stroke Piston w/Ring *SINGLE ONLY* subaru-outback-xt-2009 Filter Material: Cotton

Filter Material: Cotton

9 pounds for a 30lb savings over stock

A Flex Fuel Sensor is required and not included

Pro-Kit provides the ultimate balance to take your passion for driving to a whole new level

Manley Subaru WRX STi (EJ257) 99.5mm Bore STD Size 8.5 CR 83mm Stroke Piston w/Ring *SINGLE ONLY* subaru-outback-xt-2009 Filter Material: Cotton04 11 Subaru WRX STi Platinum Series Piston Single by Manley Performance Manley pistons are machined of high strength 2618 material. Each design is lightweight yet robust enough to deliver long service life. Perfect ring groove to skirt squareness is achieved through our unique "one fixturing" manufacturing method that assures maximum horsepower. Round wire locks, tool steel wrist pins, and rings are included with every set at no additional charge.