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These custom pistons are made specifically for use with the S20 cylinder heads found on the 02-05 WRX and other EJ20 applications without cylinder head combustion chamber modification
Suits small frame 46-54mm turbo
The Killer B Motorsport Windage Tray / Baffle has many features and advantages over the OEM piece
Reduced Turbo Spool Time
Direct Bolt-On Installation: A direct fit to your Subaru
Manley Turbo Tuff 04+ Subaru WRX/STI EJ257 99.75mm Bore +.25mm Size 8.5:1 Dish Piston Set Stock Location These custom pistons are madeDIMS: 10. 25 x 5. 75 x 5. 5 SUB: Forged EJ Pistons 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. Features Pin: Standard .