Complete close ratio 4 speed gearbox, same as all racing models, nr. 61002. All dry and wet clutch models.

Complete close ratio 5 speed gearbox same as all racing models, nr. 62002. All dry and wet clutch models.

Complete close ratio 6 speed gearbox, nr. 63002. Very excellent type and modified ratio to have a better spread.

Modify sets for your road 4 speed gearbox to transfer it into close ratio conversion, nr. 61006.

Modify sets for your road 5 speed gearbox to transfer it into close ratio conversion, nr. 62006.

Modify set for your road ss/sx gearbox to transfer it into close ratio conversion, nr. 62008.
hg26 hg36
hg33
hg32
4 speed cl ratio 2.04-1.40-1.10-1
4 speed modified set cl. ratio 2.04-1.40-1.10-1

5 speed cl ratio 2.26-1.75-1.37-1.12-1
5 speed modified set cl ratio ss/sx 2.50-1.83-1.38-1.11-1
5 speed super cl ratio 2.18-1.62-1.31-1.14-1

6 speed cl ratio 2.16-1.77-1.45-1.24-1.11-1