*Just Arrived!* New UK Made Triumph “B Range” CEI Cylinder Barrel Base Stud. Want the best? Your bike deserves the best! So install this high quality English made stud that you can trust! Stud measures 3/8″ X 16 – 26 TPI X 1-5/8″. Notice the correct groove for the barrel dowel? As good as it gets! Fits all Triumph Unit 650 Twins (Bonneville, T120, T120TT, T120C, Tiger, TR6, Trophy & TR6C) from 1963-1968. Also fits various Triumph Pre-Unit 650 & 500 Twins! Please refer to your parts catalog for proper fitment.*****Please note that this part is not compatible with 1969 & Later 650 & 750 models that use a UNF thread pitch! Measure your thread pitch to ensure this part will work for you!*****We also sell the other type CEI Cylinder Base Stud! Search 70-0672Made in the UKO.E.M Part number is 70-3523 or E3523