Frenkit Rear Caliper Seal and Piston Kit NISSIN 629071 for Kawasaki Frenkit Frenkit 629071: rear caliper seal and piston kit. See if it fits your bike. Kawasaki GTR 1400 Kawasaki GTR 1400 Concours Kawasaki ZZR 1200 Kawasaki ZZR 1400