Montagesatz SU-Vergaser HS6, TR3, TR3A, TR3B, TR4 Didn't need to ream the I/D of the bush at all, fits perfectly on to a new throttle spindle.Perfect fit after reaming the carb body to 9.5mm with piloted reamer Triumph Tr7 Su Carburetor Triumph TR7 ** MESSING ** VERGASERSPINDELBUCHSE / LAGER HS6 SU Triumph Tr 6 Pi