Manley Performance 612102C-4 Platinum Series Piston Set for Subaru WRX STI EJ257, 99.75mm Stroke, 9.8:1 Compression Ratio

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.

• 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.

Upgrade your Subaru WRX STI with the Manley Performance Platinum Series piston set, designed for optimal performance and durability. Crafted from high-quality 2618 alloy forgings, these pistons deliver superior strength to withstand high-stress conditions in demanding engine applications. The pistons feature proven cam and barrel skirt profiles that generate substantial power while being gentle on your engine's cylinder walls, ensuring longevity and consistent performance. Precision-machined ring lands and grooves enhance ring seal, translating to improved compression and horsepower. The set includes chrome moly wrist pins as standard, with optional upgrades to 9310 and Turbo Tuff/DLC alloys for added durability in extreme conditions. Unique fixturing in manufacturing allows for precise skirt turning and ring groove machining in a single operation, guaranteeing perfect ring-to-skirt squareness for a reliable seal. This piston set is compatible with 2004-2012 Subaru Impreza models, specifically engineered to meet the needs of professional tuners and engine builders seeking high performance. Note that these pistons require carb acknowledgment and are not CARB-approved, and they are suitable for air freight shipping. Built with Prop 65 compliance, this component ensures safety and quality standards are met. Whether you're rebuilding or upgrading your engine, the Manley Platinum Series pistons offer a robust solution for increased power and engine longevity.

Features:

• High-strength 2618 alloy forgings for durability and performance

• Proven cam and barrel skirt profiles for power and engine friendliness

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

• Unique fixturing for precise skirt turning and ring groove machining

• Exacting ring lands and grooves for superior seal and compression

Fitment:
2004 Subaru Impreza WRX STI
2005 Subaru Impreza WRX STI
2006 Subaru Impreza WRX STI
2007 Subaru Impreza WRX STI
2007 Subaru Impreza WRX STI Limited
2008 Subaru Impreza WRX STI
2009 Subaru Impreza WRX STI
2010 Subaru Impreza WRX STI
2010 Subaru Impreza WRX STI Special Edition
2011 Subaru Impreza WRX STI
2011 Subaru Impreza WRX STI Limited
2012 Subaru Impreza WRX STI
2012 Subaru Impreza WRX STI Limited

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: t
Units Per Sku: 1