Rear-wheel drive, Yamaha FS1 (1977 and later) and DT50 MX. 39 T Esjot, top quality. Made in Germany.

Esjot drives are made in Germany. Exact dimensional tolerance and they last at least twice as long as Asian-made drives. Buy an Esjot chain and you will get the best possible transmission. This drive should have a 420 chain. Esjot manufactured drives for Zündapp, Kreidler, Sachs and a number of other mopeds already in the 60s and 70s.