EJ257 Piston with Rings - 99.5mm Grade A

• 2004-2007 Subaru | WRX STI

Manley Performance Platinum Series pistons feature 2618 alloy forgings, proven cam and barrel skirt profiles, tool steel wrist pins, and moly skirt coatings on select part numbers. This single piston with rings is built for the Subaru EJ257 engine in 2004-2007 WRX STI models at 99.5mm bore, Grade A — join the ranks of professional engine builders and tuners who rely on Manley pistons for superior performance and durability.

• Single piston with rings for 2004-2007 Subaru WRX STI (EJ257)
• 99.5mm bore, Grade A
• 2618 alloy forging for superior strength and durability
• Proven cam and barrel skirt profiles
• Tool steel wrist pins
• Moly skirt coatings on select part numbers
• Unique fixturing ensures ultimate ring groove to skirt squareness
• Exacting ring lands and grooves

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