New BSA Unit Twins Rear Chain Adjuster & Nut Set. Adjust your rear chain the proper way using this adjusting bolt and locking nut set. Replaces BSA part number 68-4150 and 24-0563. (1) bolt and (1) nut is included. Bolt measures 1 1/2" X 5/16" X 26 CEI and the nut measures 5/16" X 26 CEI. Fits all BSA A50 & A65 models (Lightning, Royal Star, Hornet, Thunderbolt, etc) from 1966-1970. Please refer to your parts catalog for proper fitment.
•Made in England
•O.E.M Part number is 68-4150 & 24-0563