First seen at the 2015 Tokyo Auto show, rumour has it that the Honda Concept CB is all set to make its second appearance at the upcoming Tokyo Auto Salon.

The CB concept, which was Honda’s only concept at the Tokyo Motor Show, is expected to take the retro-bike fight to machines like Triumph’s new Bonneville in the future.

Featuring a heavily sculpted fuel tank, new aluminium-effect side panels, new air-box covers with chrome flashes, a new seat and different castings for the foot-peg hangers, the Honda CB concept also comes with generous dose of chrome on the instruments and headlight, and the rails under the pillion seat are changed from aluminium castings to chrome tubes, too.

Under all that, the frame and engine are same as the CB1100 EX, where the motor is already Euro4-compliant, despite all other air-cooled four-cylinder engines having long since been abandoned by their makers thanks to difficulties meeting emissions rules.

Honda’s official line on the Concept CB is that it’s a ‘customised concept model’ intended to show what could be achieved by modifying an existing bike, but the components used look much more like production parts than anything a customiser would be likely to opt for.