CJM x Wiseco EJ25, Track Mod Series Piston

CJM x Wiseco Track Mod Subaru EJ257 Piston Set

30.70 mm Compression Height, 0.9055 in. Pin Diameter, Sport Compact, Set of 4.

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.

• Engineered, forged, and machined in the USA from 2618 aluminum for improved tensile strength at high temperatures
• Additional Webbing on the under crown to increase stiffness and strength
• ArmorGlide® Skirt Coating: seizure resistant, friction reduction, and quieter operation
• Fully machined crown details
• Precision ring grooves, anti-detonation groove, and additional ring seal performance
• Forced pin oiling
• Designed and built to withstand heavy to severe duty performance applications
• .225" H13 Tool Steel Wrist Pin
• Offset wrist pin for quieter operation