Manley 15+ Subaru FA20 WRX 86.25mm +.25mm Over Size Bore 10:1 Dish Piston Set with Rings

The Subaru WRX Engine Piston Set by Manley Performance is a forged piston set meticulously engineered for a 4-cylinder engine, featuring an 86.25mm +.25mm over size bore and a 10:1 dish configuration. Constructed from 2618 alloy forgings, this piston set ensures superior strength and performance for high-performance driving. The pistons include premium Chrome Moly wrist pins, enhancing durability and reliability under extreme conditions. Precise engineering of ring lands and grooves delivers an improved ring seal for an increase in engine power. Unique cam and barrel profiles are gentle on cylinder walls while generating substantial power output. Manley’s proprietary fixturing process guarantees ultimate ring groove to skirt squareness, contributing to reliable performance and longevity.