NEW AJP REAR BRAKE MASTER CYLINDER SERVICE KIT / REPAIR KIT, TO SUIT A LOT OF THE MODERN TRIALS BIKE MODELS SUCH AS GAS GAS PRO, GAS GAS RACING, SHERCO, MONTESA 4RT.
PISTON DIA IS 9.5mm AND THE OVERALL LENGTH IS 38mm
please check dimensions first, these are not a buy to try!!