Wiseco K598M100 Subaru EJ257 Professional Series Forged Racing Piston Set

Professional Series forged racing pistons from Wiseco are no-expense-spared pistons designed for the serious racers and builders. Packed full of custom-level performance and durability features and provided with premium rings, Professional Series pistons are designed and built for use in heavy to severe duty race builds. Remove your limits with Wiseco's Professional Series. Wiseco Subaru EJ257 Piston Set, 100.00 mm Bore, 30.70 mm Compression Height, 0.9055 in. Pin Diameter, Sport Compact, Set of 4.

• Engineered, forged, and machined in the USA from 2618 aluminum for improved tensile strength
• Precision ring grooves, anti-detonation groove, and additional ring seal improving features
• ArmorGlide Skirt Coating: seizure resistant, friction reduction, and quieter operation
• Designed and built to withstand heavy to severe duty performance applications
• Fully machined crown features
• Forced pin oiling

Wiseco Professional Series forged racing pistons are designed for serious racing and heavy- to severe-duty performance builds. This set is engineered for Subaru EJ257 applications and features 100.00 mm bore sizing, a 30.70 mm compression height, and a 0.9055-inch wrist pin diameter.

Each piston is forged and machined in the USA from 2618 aluminum for improved tensile strength. Precision ring grooves, an anti-detonation groove, additional ring-seal features, and a fully machined crown support performance-focused engine builds. ArmorGlide skirt coating is designed to resist seizure, reduce friction, and promote quieter operation, while forced pin oiling supports piston durability.

Fitment data indicates compatibility with select 2004, 2005, 2006, 2007, 2009, 2011, and 2012 Subaru Impreza applications. Verify the exact vehicle and engine configuration before installation. This product is not CARB approved.

What's Included

One set of four Wiseco Professional Series forged pistons with premium rings.

Features:

• Forged 2618 Aluminum Construction: Manufactured and machined in the USA from 2618 aluminum for improved tensile strength.
• Heavy-Duty Race Design: Built for heavy- to severe-duty performance applications.
• ArmorGlide Skirt Coating: Designed to resist seizure, reduce friction, and promote quieter operation.
• Enhanced Ring Sealing: Precision ring grooves, an anti-detonation groove, and additional ring-seal features support performance.
• Application: Designed for Subaru EJ257 sport compact engine applications.
• Bore: 100.00 mm.
• Compression Height: 30.70 mm.
• Wrist Pin Diameter: 0.9055 inches.
• Piston Set: Includes four pistons with premium rings.
• Crown and Oiling Features: Fully machined crown and forced pin oiling support performance-focused builds.

Fitments:
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