Manley Performance EJ257 2004-2012 Subaru WRX STI Standard Stroke 99.5mm Piston Set with Rings - Model 612000C-4

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.

Experience superior engine performance with the Manley Performance EJ257 piston set designed specifically for Subaru WRX STI models from 2004 to 2012. Crafted with high-quality 2618 alloy forgings, these pistons deliver exceptional strength and durability in demanding racing and tuning applications. The precise cam and barrel profile design generates significant power while maintaining a gentle impact on your engine's cylinder walls, ensuring longevity and consistent performance. Each piston features meticulously machined ring lands and grooves, adhering to strict standards to optimize ring seal and maximize power output.
Our signature Platinum Series pistons come equipped with premium chrome moly wrist pins as standard, with options for upgrades to 9310 and Turbo Tuff/DLC alloys for enhanced durability in high-stress environments. The unique fixturing process allows for simultaneous skirt turning and ring groove machining, ensuring the utmost ring to skirt squareness for reliable sealing and performance. These pistons are designed to fit specific Subaru Impreza models, providing a perfect match for your engine rebuild or upgrade.
Note that these pistons require carb acknowledgment and are not carb approved, emphasizing their focus on performance tuning. They are suitable for air freight shipping and do not require LTL freight, making them a convenient choice for professional engine builders. Trust Manley's expertise and commitment to quality to elevate your Subaru's engine performance to the next level.

Features:

• 2618 alloy forgings for superior strength and durability

• Cam and barrel profile design for high power output and cylinder wall safety

• Chrome Moly wrist pins standard, with optional upgrades to 9310 and Turbo Tuff/DLC alloys

• Unique fixturing for precise skirt turning and ring groove machining

• Exacting ring lands and grooves for optimal ring seal and power

• Designed specifically for Subaru WRX STI models from 2004 to 2012

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