NEW BOYER BRANDSEN ELECTRONIC IGNITION KIT WITH 6 VOLTCOILS (For hotter spark), PLUG WIRES AND VOLTAGE REGULATOR FOR UNIT TRIUMPH AND BSA TWINS.  IT'S TIME TO UPDATE YOUR VINTAGE BRITISH MOTORCYCLE AND MAKE IT THAT MUCH MORE RIDABLE. THIS KIT FITS UNIT 500 58-73 ALL UNIT 650 63-70 MODELS