Honda CB72 & Honda CB77 5 Speed Road Version Gearbox

The Nova Honda CB72 & CB77 gearbox is a direct replacement for the standard four speed transmission. The gear ratios have been chosen to reflect the sporting aspirations of the CB72/CB77 but still allowing for practical use around town. The additional gear requires the removal of the kickstart mechanism.

The CB77 & CB72 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.

Superfinished in house as standard.

1st 14 – 32 x LDR 2.782:1
} 37.9%
} 33.5%
} 15.4%
} 14.5%
2nd 19 – 27 x LDR 1.729:1
3rd 22 – 25 x LDR 1.383:1
4th 26 – 25 x LDR 1.170:1
5th 28 – 23 x LDR 1.000:1
Overall reduction 1st – 5th 64.1%

1st 3.120:1
} 44.2%
} 27.0%
} 21.3%
2nd 1.740:1
3rd 1.270:1
4th 1.000:1
Overall reduction 1st – 4th 70.0%

Honda CB72 & Honda CB77 5 Speed Road Version Gearbox

Price £2625.00

+VAT (if applicable) & Carriage.

Nova assembly:

60 (race drum)

261 (standard drum)

Honda CB72/77 Duplex Primary Chain Sprockets

Duplex primary sprockets with solid mounting holes.

Designed to be used with duplex chain 1/4″ Roller x 3/8″ Pitch.

Honda CB72/77 Duplex Primary Chain Sprockets

Price £450.00

+VAT (if applicable) & Carriage