Shimano LT-4 (LT45) - service instructions

Shimano LT-4 (LT45) - service instructions main image 01

These instructions make clear that the Shimano LT-4 is a 4 speed system supporting a single chainwheel and a sprocket sets from 12-18 teeth to 12-21 teeth. This document is also usefully dated November 1988. Finally it is branded 'Shimano F1', with a funky, high speed, logo. I have yet to discover what this means.

And dig that crazy cable routing.

Browse associated derailleurs.

Shimano LT.4 (LT45) thumbnail