Subaru EJ257 WRX/STI 4V Piston Set 100mm Bore - K598M100AP - Wiseco

Piston and Ring - Sports Compact - Forged - Dish - 100.00 mm Bore - 1.209 in Compression Height - 1.2 x 1.5 x 2.0 mm Ring Groove - Minus 19.00 cc - Armor Plated - Subaru EJ - Kit