These are heavy duty springs that are chrome plated for superior corrosion resistance

The center mount gas filler bung that accepts a thread-in Harley-Davidson style gas cap

Nevertheless

These Lucas-style reproduction coils work with either a 6 volt system (wire the coils in parallel) or 12 volt system (wire the coils in a series)

Bar clamps feature 5/16-18 t

Wassell Rotor Triumph / BSA / Norton OEM #54202299 TR6 T120 BSA A65 A50 Brand_EMGO These are heavy duty springsGet your charging system operating at peak efficiency! Replace your old, stock Lucas rotor with one of these new ones! Fits Triumph BSA Norton, check your parts book for fit, OEM #54202299. A good test to see if your rotor is junk is to take it off the bike, set it on the table and try and lift it with a large screwdriver. If it won't hang from a screwdriver then it needs to be replaced. This is a common problem with vintage motorcycle charging