Lucas Rectifier / Regulator Units - Choose From Single & Three Phase TR25W Trophy M Part number is 57-1946

M Part number is 57-1946 or T1946

Can be used as a "Kill Button" or a Horn

Fits most Triumph 350 & 500 Unit models T100R

Also fits many BSA Goldstar 350 & 500 models

Also fits Triumph TR25W Trophy from 1969-1970 only

Lucas Rectifier / Regulator Units - Choose From Single & Three Phase TR25W Trophy M Part number is 57-1946Are you tired of fooling around with your old wiring electrical system trying to make it work let alone make it "reliable"? Well we have just the part that will solve all your problems and will keep you and your bike on the road. Introducing new Lucas Regulators! Lucas regulators are one of the newest parts featured on there product line up. Comes with everything you need to convert your motorcycle to a solid state system. This simple Lucas regulator