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Search 83-2829
any other models up to 1970
Not compatible with Triumph 350 & 500 Twins
650 & 750 models equipped with 7/8" handlebars
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BSA Crankshaft Alternator Rotor Nut by CBS - (1) - 29-2023 7/8" Search 83-2829For the past few years we had had issues with finding BSA crankshaft rotor nuts that actually fit. We have encountered rotor nuts that were too small and too large with the incorrect thread specifications Not only are some rotor nuts made incorrectly, but BSA changed the nut "specification" without changing the part number! From what we know, there was a spec change on the rotor that happened around 1968ish Early types where 5 8" X 20 TPI (British)