STOCK BORE IS 63.00MM TEMP OUT OF STOCK STD/63.00MM/255T @ PISTON KIT ATC185/S 255T OR 204Q OR 255U OR 318A (PICK_SIZE) temp out of stock 255t PISKIT 255T OR 204Q OR 255U OR 318APICK_SIZE: 2ND_OVER/63.50MM/204Q4TH_OVER/64.00MM/255U6TH_OVER/64.50MM/318A