Manley Performance Subaru WRX/STI EH257 99.55mm Bore +.05mm Size Dish Piston Set

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 99.55mm/1.209 CD/DIS E/D.

• 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.

Elevate your engine build with the Manley Performance Platinum Series pistons designed specifically for Subaru WRX and STI models. Crafted from high-strength 2618 alloy forgings, these pistons deliver exceptional durability and performance for demanding applications. The precise cam and barrel (skirt) profiles optimize power output while reducing stress on cylinder walls, making them ideal for high-performance tuning and racing scenarios.
Each piston features a moly skirt coating on select part numbers and tool steel wrist pins to ensure longevity and reliable operation. Manley's unique fixturing process allows for accurate skirt turning and ring groove machining in a single step, guaranteeing perfect squareness for optimal ring sealing. The pistons are engineered with strict adherence to precise ring land and groove specifications, resulting in enhanced ring seal and increased horsepower.
These pistons are equipped with chrome moly wrist pins as standard and offer optional upgrades to 9310 or Turbo Tuff/DLC alloys for extra durability. The design ensures smooth interaction with the cylinder walls, providing a balance of power and longevity, ideal for both street and track use. Please note that these pistons are not carb-legal and require carb acknowledgment, making them suitable for off-road or racing applications where emissions compliance is not required. Built for serious enthusiasts and professional engine builders, the Manley Subaru WRX/STI piston set is a reliable choice for high-performance engine upgrades.

Features:

• 2618 alloy forgings for superior strength and durability

• Cam and barrel (skirt) profiles optimized for power and cylinder wall friendliness

• Moly skirt coatings on select part numbers for reduced friction

• Chrome moly wrist pins standard, with optional high-durability upgrades

• Unique fixturing for precise skirt turning and ring groove machining

• Strictly manufactured ring land and groove dimensions for enhanced seal and power

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
Clearance Item: t