Wiseco Subaru WRX EJ20 STROKER 1.181CH Piston Shelf Stock Kit

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 EJ20 Piston Set, 92.50 mm Bore, 30.00 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

The Wiseco K579M925 Professional Series piston set is engineered for Subaru EJ20 sport compact applications requiring dependable performance in heavy- to severe-duty racing and high-performance builds. Each piston is forged from 2618 aluminum and precision machined in the USA to provide improved tensile strength and the durability needed for demanding engine environments. This set includes four pistons and premium piston rings for a complete performance-oriented replacement solution.
The pistons feature fully machined crowns, precision ring grooves, and an anti-detonation groove to support reliable combustion control and improved ring sealing. Forced pin oiling helps promote piston-pin lubrication under demanding operating conditions, while Wiseco ArmorGlide skirt coating is designed to reduce friction, resist seizure, and help produce quieter piston operation. These features make the Professional Series well suited for serious racers, engine builders, and Subaru EJ20 projects requiring custom-level strength and durability.
The Wiseco K579M925 set is designed for a 92.50 mm bore, 30.00 mm compression height, and a 0.9055-inch piston-pin diameter. It is listed for select Subaru Impreza applications, including model years from 1993 through 1998; verify engine specifications, compression requirements, and vehicle fitment before installation. This product is intended for automotive performance use and is not CARB approved. Professional installation and appropriate engine clearancing, tuning, and break-in procedures are recommended for best results.

Features:

• Forged 2618 aluminum construction provides improved tensile strength and durability

• Precision ring grooves and anti-detonation groove support improved ring sealing and combustion control

• ArmorGlide skirt coating helps reduce friction, resist seizure, and promote quieter operation

• Designed for heavy- to severe-duty racing and performance applications

• Fully machined piston crowns support precise engine setup

• Forced pin oiling promotes piston-pin lubrication under demanding conditions

• Includes four pistons and premium piston rings

• Designed for Subaru EJ20 applications with a 92.50 mm bore

Fitment:
Subaru Impreza Base 1993
Subaru Impreza Base 1994
Subaru Impreza Base 1995
Subaru Impreza Brighton 1996
Subaru Impreza Brighton 1997
Subaru Impreza L 1993
Subaru Impreza L 1994
Subaru Impreza L 1995
Subaru Impreza L 1996
Subaru Impreza L 1997
Subaru Impreza L 1998
Subaru Impreza LS 1993
Subaru Impreza LS 1994
Subaru Impreza LX 1995
Subaru Impreza LX 1996
Subaru Impreza Outback 1995
Subaru Impreza Outback 1996
Subaru Impreza Outback 1997
Subaru Impreza Outback 1998
Subaru Impreza RS 1998