Manley Performance Platinum Series Piston Set for Subaru WRX/STi EJ257 - 75mm Bore, 100mm Compression Distance, +.50mm Size, 8.5:1 Dish

Our signature "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. Join the ranks of professional engine builders and tuners who rely on Manley pistons for superior performance and durability. Manley Piston Set, PIST-SUBARU 100mm/1.285 CD/DISH T/T.

• Chrome Moly Wrist Pins: Premium Chrome Moly wrist pins come standard with our Standard Series Pistons. For select SKUs, we offer wrist pin upgrades to 9310 and Turbo Tuff/DLC alloys, providing additional durability.
• Unique Fixturing: Manley's unique fixturing allows for skirt turning and ring groove machining in a single operation, ensuring ultimate ring groove to skirt squareness.
• Exacting Ring Lands and Grooves: We adhere to strict standards for piston ring lands and grooves, resulting in enhanced ring seal and more power.
• Cam and Barrel Profiles: Our pistons boast cam and barrel (skirt) profiles that generate substantial power while being gentle on cylinder walls.
• 2618 Alloy Forgings: We use domestic 2618 alloy forgings, ensuring superior strength and performance.

Designed for high-performance Subaru WRX and STI engines, the Manley Performance Platinum Series piston set offers exceptional strength and durability. Crafted from domestic 2618 alloy forgings, these pistons deliver superior thermal stability and resistance to fatigue, making them ideal for demanding street and racing applications. The precise cam and barrel (skirt) profiles optimize power output while maintaining gentle contact with cylinder walls, promoting long-term engine health. Each piston features meticulously machined ring lands and grooves, ensuring an optimal seal that translates to increased horsepower and efficiency.

The set includes chrome moly wrist pins as standard, with optional upgrades to 9310 and Turbo Tuff/DLC alloys for enhanced durability under extreme conditions. Manley's innovative fixturing process allows for integrated skirt turning and ring groove machining in a single operation, guaranteeing consistent ring-to-skirt squareness. This precision manufacturing enhances ring seal and reduces blow-by, directly contributing to engine performance. The pistons are designed with a dish configuration, providing a compression ratio of 8.5:1, suitable for turbocharged setups and tuned applications. These features collectively make the Manley Platinum Series pistons a trusted choice among professional engine builders and tuners seeking reliable performance.

Please note that this piston set requires Prop 65 compliance acknowledgment and is not carb approved. It is not suitable for air freight shipping, and a separate acknowledgment of Prop 65 is necessary prior to purchase. Engine builders and performance enthusiasts can rely on Manley's reputation for quality and innovation, ensuring their Subaru engines are equipped with components built to withstand high-stress environments and deliver peak performance.

Features:

• 2618 alloy forgings for superior strength and thermal stability

• Chrome moly wrist pins included as standard; optional upgrades available

• Unique fixturing enables combined skirt turning and ring groove machining

• Exacting ring lands and grooves for enhanced sealing and power

• Cam and barrel (skirt) profiles designed for high power output with minimal cylinder wall stress

Air Freight Prohibited: false
Not Carb Approved: true
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Regular Stock: false
Units Per Sku: 1