Manley Performance man612000CA-1 04+ Subaru WRX STI EJ257 99.5mm Grade A Single Piston with Rings

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 Single, SUBARU 99.5mm/GRADE A.

• 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 man612000CA-1 Platinum Series piston is designed for the 04+ Subaru WRX STI with the EJ257 engine. This single piston features a 99.50mm Grade A bore size and a 79mm stroke, with rings included. Its forged 2618 alloy construction is engineered for strength and performance in demanding automotive applications.

Performance-focused design features include a proven cam and barrel skirt profile, exacting ring lands and grooves, and specialized manufacturing fixturing that machines the skirt and ring grooves in a single operation. These features support accurate ring groove-to-skirt squareness, enhanced ring seal, power potential, and reduced cylinder-wall wear. The piston also includes a chrome moly wrist pin. This product is not CARB approved, and the supplied data identifies it as requiring a CARB acknowledgment.

Key Product Specifications & Technical Data:

• Brand: Manley Performance
• Part number: man612000CA-1
• Product type: Single automotive piston
• Series: Platinum Series
• Engine application: Subaru WRX STI EJ257
• Application year: 04+
• Bore size: 99.50mm Grade A
• Stroke: 79mm

What's Included: One piston with rings and a chrome moly wrist pin.

Fitment: 04+ Subaru WRX STI with EJ257 engine, as stated in the supplied product data.

Features:

• 2618 Alloy Forging: Domestic 2618 alloy forging provides a strong performance-oriented piston construction.
• Chrome Moly Wrist Pin: A chrome moly wrist pin is included with the piston.
• Unique Fixturing: Skirt turning and ring groove machining are completed in a single operation to support ring groove-to-skirt squareness.
• Exacting Ring Lands and Grooves: Precisely controlled ring lands and grooves are designed to support ring seal and power.
• Cam and Barrel Skirt Profiles: The skirt profile is designed to generate power while being gentle on cylinder walls.
• Application-Specific Design: Intended for the 04+ Subaru WRX STI with the EJ257 engine.
• Grade A Bore Size: Features a 99.50mm Grade A bore specification.
• Piston with Rings: Supplied as a single piston with rings.

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