Manley Piston Set – Subaru WRX STI EJ257 2.5L (99.50mm Bore / -14.00cc / 1.130in CH)
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Overview
The Manley Platinum Series Piston Set is engineered for the Subaru WRX STI EJ257 2.5L engine. Built from high-strength 2618 alloy forgings, these pistons feature proven cam and barrel skirt profiles, tool steel wrist pins, and moly skirt coatings (on select part numbers) for maximum durability. Trusted by professional engine builders and tuners worldwide, Manley pistons deliver superior ring seal, consistent power, and long-term reliability under high-performance conditions.
Key Features
- 2618 alloy forgings for superior strength
- Premium chrome moly wrist pins included (upgrades available in 9310 and Turbo Tuff/DLC)
- Exacting piston ring lands and grooves for enhanced ring seal
- Cam and barrel skirt profiles maximise power while protecting cylinder walls
- Unique fixturing ensures precise skirt turning and ring groove machining
- Dish piston design optimised for performance
Specifications
- Bore Diameter: 99.50mm
- Compression Height: 1.130in
- Piston Volume: -14.00cc
- Piston Weight: 414g
- Piston Series: Platinum Series – Standard
- Piston Quantity: Set of 4
- Engine Stroke: 83.00mm
- Bore Oversize: Stock
- Piston Head Type: Dish
- Compression Ratio: 9.80:1
Vehicle Compatibility
- Subaru WRX STI EJ257 2.5L
No instructions available for this product.
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