CB160 and CB175K0 Gear Ratios

[G-Man]

Here's one for the experts. Whilst they seem outwardly the same, it appears that the CB125K0 and CB160 have four gears and the CB175K0 has five.

Is it possible to do a swap or are there major differences? I don't have access to a CB175 but it sounds like it would be nice to get a 175 gear cluster for my CB160.

G-Man

[FAST FRED]

5 SPEED GEAR SETS REQUIRE THREE SHIFT FORKS. FOUR SPEED GEAR BOXES HAVE ONLY TWO SHIFT FORKS.

FAST FRED

[G-Man]

Fred

Thanks for the info. Is it possible to swap the shift drum and forks etc? I know it would make more sense just to swap the whole engine but I was just curious.

G

[FAST FRED]

G-MAN HERE'S A LINK TO AN ORGINIZATION THAT RACES CB160 AND CB175 HONDAS IN OREGON. IF ANYBODY CAN ANSWER YOUR QUESTION THESE ARE THE GUYS.http://viciouscycle.com/CB160.html

FAST FRED

[G-Man]

Fred

Wow! Great link! A bit like the Bantam racing club in the UK only with nicer sounding bikes.

Many thanks

G

[G-Man]

Fred

Thanks for your help. The notes on this page suggest that the swap is quite straightforward.

http://honda-modernclassics.com/cb93.aspx

I have bought a complete CB175 5-speed transmission so that I can try this out. I'll post the results here.

G

[teazer]

The last one I fitted wasn't too difficult but required a small amount of welding and machining for the bearing on the shift drum. The gear shafts drop straight in as I recall.