Wiseco Subaru WRX 4v R/Dome 8.4:1 CR 92.5 Piston Kit

If you're building a high-performance Subaru WRX with the EJ20 engine, this Wiseco forged piston kit is designed for serious racers and builders. These pistons are made from 2618 aluminum, which offers improved tensile strength compared to other aluminum alloys. This makes them well-suited for heavy to severe duty race applications where durability under extreme conditions is critical.

Wiseco has packed these pistons with features for improved performance and longevity. You'll find precision ring grooves, anti-detonation grooves, and other features aimed at improving ring seal. The fully machined crown ensures accuracy, and forced pin oiling helps keep the wrist pins lubricated. They also come with an ArmorGlide skirt coating, which helps reduce friction, resist seizure, and operate more quietly. This kit includes four pistons, each with a 92.50 mm bore and a compression height of 32.66 mm, featuring an 8.4:1 compression ratio.

Keep in mind that these pistons are not CARB approved and cannot be shipped to California. They are intended for dedicated performance builds where maximum output and reliability are the top priorities.