Manley Subaru 2.5L EJ257 WRX STi Piston Set - 100.00mm Bore 1.209in CH, -10.00 CC

This piston set is designed for Subaru EJ257 2.5L WRX STI engines. It features a 100.00mm bore, a 1.209" compression height, and a -10.00cc dish volume (equivalent to 22.00cc dish, resulting in 8.5:1 compression ratio with a 50cc cylinder head). Constructed from 2618 alloy with tool steel (or chromoly) wrist pins for durability. Pistons are skirt coated for reduced friction and wear, with cam and barrel skirt profiles for power and cylinder wall protection. The set includes four forged pistons, tool steel wrist pins, and moly skirt coatings. Ring lands and grooves are precision machined for a better ring seal, and rings are included.