Rear Wheel bearing Kit - Triumph 350/500 Unit twins, Pre Unit twins, Unit T120/TR6, T150 all with Spool Hub with bolt on sprocket & drum. - This is for the rear hub with the bolt-on brake drum. If you have a splined quick-detach hub, then you need a different bearing kit .
TR5T (1974), Unit T120/TR6, T140/TR7, T150 all with conical hubs.
OEM: 42-5819, 37-0653, W653