JIMS, pinion shaft 54-57 B.T. - 54-57 B.T. (NU) 503311 Overall length with M8 threaded

Overall length with M8 threaded stud 29mm

and spacer are included

but prefer a higher sneaker with more backing

break and rear light

Used to correct tacho-output on dual fire tachometers when using a single fire ignition

JIMS, pinion shaft 54-57 B.T. - 54-57 B.T. (NU) 503311 Overall length with M8 threadedUse 23985 12 key (MCS 517945). Use 24023 36 JIMS nut (MCS 978258) for flywheel side and 24023 54 JIMS nut (MCS 978263) for pinion gear side. Comes with oil end plug. Side oiling. Repl. 24006 54A. Tech tip: 58 81 B. T. pinion shaft assemblies also fit 54 57 B. T. when the stock pressed in bearing race is removed and the cast in bearing retainer is bored out to accept the larger 58 81 press in bearing race (OEM 24599 58B MCS 518110).