Wiseco Subaru EJ257 Piston Set, 99.75 mm Bore, 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
ArmorGlide® Skirt Coating: seizure resistant, friction reduction, and quieter operation
Fully machined crown features
Precision ring grooves, anti-detonation groove, and additional ring seal improving features
Forced pin oiling
Designed and built to withstand heavy to severe duty performance applications
