Manley Performance - man612100C-4 - 04+ Subaru WRX STi EJ257 Platinum Series 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.

• 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.

The Manley Performance man612100C-4 Platinum Series piston set is designed for 04+ Subaru WRX STi applications with the EJ257 engine. This set features a standard-stroke configuration, 99.5 mm standard bore, 9.8:1 compression ratio, dished pistons and rings. Manley Platinum Series pistons use 2618 alloy forgings, proven cam and barrel skirt profiles, tool steel wrist pins and moly skirt coatings on select part numbers.

Key Features & Performance Benefits

• 2618 Alloy Forgings: Domestic 2618 alloy forgings provide strength and performance.
• Precision Fixturing: Skirt turning and ring groove machining are completed in a single operation for improved ring groove-to-skirt squareness.
• Exacting Ring Lands and Grooves: Strict machining standards support enhanced ring seal and power.
• Cam and Barrel Profiles: Skirt profiles are designed to generate power while being gentle on cylinder walls.

Key Product Specifications & Technical Data

• Brand: Manley Performance
• Part Number: man612100C-4
• Series: Platinum Series
• Application: Subaru WRX STi
• Engine: EJ257
• Stroke: Standard
• Bore: 99.5 mm standard bore
• Compression Ratio: 9.8:1

What's Included in the Box

The product is described as a piston set with rings. Chrome moly wrist pins come standard with Manley Standard Series pistons; the supplied wrist pin specification for this part number is not stated in the product data.

Fitment

Fits 2004, 2005, 2006 and 2007 Subaru Impreza applications as listed by the supplier. Verify application details before installation.

Important: This product is not CARB approved, and acknowledgement is required. Proposition 65 applies.

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