Manley 99.75mm Light Weight Piston Set for Subaru EJ257 STI
Manley pistons are machined of high strength 2618 material. Each design is lightweight yet robust enough to deliver long service life. Offset wrist pin design is utilized for quiet start-ups. Perfect ring groove to skirt squareness is achieved through our unique "one fixturing" manufacturing method that assures maximum horsepower. All pistons come with moly coated skirts. Round wire locks, premium chrome moly wrist pins, and premium steel top ring sets from Total Seal are included with every kit at no additional charge. 9310 alloy upgraded wrist pins are available.
Bore Size: 99.75mm
Over Size: +.25mm
Compression Ratio: 8.5:1
Piston Type: Dish
Application: Subaru WRX Sti 2004-up - EJ257 .9055"/23mm x 2.500" Pin x .180" Wall