RACE EUROPE WORLD OF RACING piston size 55.910 mm (is condition) with bolt, bearing 1 race (approx. 120 laps/500km). in original packaging suitable for YAMAHA TZ250 1986-1987 Original spare part number: 1RK-11631-00 no ABE, no TÜV THIS PART(S) IS PRODUCED FOR RACE USE ONLY.