1975 CB125 forks

pitt_russ

New Member
Looking for a set of front forks that will fit my CB125, the ones I have are pitted. Any help would be much appreciated!
 
This is really just comparing bearings, but it's a start!

http://www.allballsracing.com/index.php/forkconversion
 
coyote13 said:
This is really just comparing bearings, but it's a start!

http://www.allballsracing.com/index.php/forkconversion
This is a great place to start, but it doesn't have any direct info on the CB125S. Good thing the Honda XR100 and the CB125S use the same steering stem bearings ;)

If you want to stick with 27mm forks, XR100 forks are the way to go. They're about an inch longer than the 1980+ CB125S forks, and are a hell of a lot easier in good shape. You'll need a 1980+ CB125S wheel (a CB100 wheel will work, although the drum is smaller), and 1980+ CB125S triple tree. Fork springs from BBR (http://www.bbrmotorsports.com/products/products.aspx?Prod=650-HXR-1005) will help stiffen the front end.

If you want something beefier, the best I've found with cross-referencing the allballs website with this page: http://scandalon.com/2009/06/motorcycle-fork-diameter-chart/ is 31mm from a dirt bike. But you'll likely have to pop the steering stem out of your CB125S triple and into the dirt bike triple as their steering stems tend to be shorter than road bikes (learned this the hard way trying to use an XR100 triple on my CB125S).

Just my 2 cents. Best of luck!
 
Thanks for the help guys.. any Idea if the 75 and 79 cb125 forks are compatible? I can't seem to find the size for the 1975.
 
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