Gearbox Stadion, Jawetta - longer 1st speed by 1 tooth

Gear set designed for Stadion S11,22 and Jawetta engines. This gearbox has 1st gear longer by 1 tooth, which creates a smaller difference between shifting to 2nd gear. The gearbox is designed for a narrow derailleur and can be combined with the original rest of the gearbox. Suitable for both original and modified engines.