Gearbox Casa Close Ratio 4 Speed

• 11-50 LI 150 1st
• 14-41 LI 150 2nd 55%
• 16-39 LI 125 3rd 20%
• 18-36 GP 200 4th 22%

Advantages of this gearbox are :

- Close, even ratio jumps of around 20% from 2nd to 3rd and from 3rd to 4th

- The same final drive ratio in 4th gear as a GP200 gearbox.

- Top gear will give approx.. 9.43 mph per 1,000rpm with 18×47 sprockets.

Exceptional precision - David Chester - 20 August 2023
An absolutely beautifully made gearbox, fits an shims together wonderfully