BSA Unit Twins Tach Drive Blanking Plate (1) - 42-0166 - 1962-72 / A50 / A65 Type We have a few adjusters

We have a few adjusters to choose form

Measures 5 3/4" X 3 1/2"

Features the correct Grey color

some can be used for "universal" applications

etc) from 1971-1972 - also fits very late 1970 models with the 4-speed gearbox and leaf-spring set-up

BSA Unit Twins Tach Drive Blanking Plate (1) - 42-0166 - 1962-72 / A50 / A65 Type We have a few adjustersNew! Just In! BSA Unit Twins CNC Alloy Tachometer Drive Blanking Plate. This is as good as it gets! Machined right here in the USA using the best materials to bring you a precise fit and longevity! Fits various BSA A50 & A65 models (Lightning, Thunderbolt, Hornet, Royal Star, Etc) up to 1972. Please refer to your parts catalog for proper fitment. Made in the USA O. E. M Part number is 42 0166