Honda CB72/77 5 Speed Road Version Gearbox

<< back to products

A direct replacement for the standard four speed transmission. The ratios have been chosen to reflect the sporting aspirations of this model but still allowing use around town. The additional ratio requires the deletion of the kickstart mechanism.

The five speed gearbox is supplied with both shafts assembled requiring only shaft support bearings. The five speed selector drum is supplied with three selector forks and a completely revised selector mechanism.

Click here for fitting guide

Available With Superfinish

Comparison to Standard Honda CB72/77

Nova Road Gearset % Drop Honda Standard Box % Drop

1st     14 - 32    x   LDR    2.782:1                             1st          3.120:1
                                                             ) 37.9%                                                )     44.2%
2nd     19 - 27    x   LDR    1.729:1                            2nd          1.740:1
                                                              )   33.5%                                                )     27.0%
3rd     22 - 25    x   LDR    1.383:1                             3rd         1.270:1
                                                             )   15.4%                                                )     21.3%
4th      26 - 25    x   LDR    1.170:1                              4th          1.000:1
                                                             )   14.5%

5th 28 - 23 x LDR 1.000:1

Overall Reduction 1st - 5th 64.1% Overall Reduction 1st - 4th 70.0 %