Basically a BSA C25 engine and frame with Triumph cycle parts. Good handling and braking (in post ’69 bikes which had a TLS front drum) were its main attributes, the motor can be a nasty piece of work – exploding gearboxes, weak con-rod and big-end, etc. Later TR25SS Blazer version had a touch tougher, tamer mill (23hp, 75mph, 75mpg, 300lbs). Neither offer reliable motorcycling unless the engine’s upgraded or replaced.