The Manley Platinum Series forged piston set for Subaru EJ25 engines is specified for a 100mm bore with a 1.209-inch compression distance and a -17cc dish. Manley cites domestic 2618 alloy forgings, tool steel wrist pins, moly skirt coatings on select numbers, and cam-and-barrel skirt profiles, describing these pistons as used by professional engine builders for strength, durability and precise ring sealing.
Manley Subaru EJ25 100mm Bore / 1.209in CD Platinum Series -17cc Dish Piston Set