Honda-SOHC

Other Stuff => Interchangeability => Topic started by: Erwin83 on March 03, 2020, 10:17:36 PM

Title: USD fork direct fit, that's right... bolt on
Post by: Erwin83 on March 03, 2020, 10:17:36 PM
For those of you wanting to update the front fork of your CB (in my case a CB350f) with something modern...
A front fork of a KTM Duke 125 / 390 (or RC 125 / 390) is a direct fit.
Just order an extra top stem bearing (30mm ID instead of 26) and you're good to go. You need a 7mm spacer under the bottom stem bearing, but they come supplied in the All Balls kit.

I don't know about clearance towards the tank yet, but technically, it's a direct fit.

Only downside (for some): it's a single brake disc set-up. For my 350, more than enough.
Title: USD fork direct fit, that's right... bolt on
Post by: JamesH on March 03, 2020, 11:02:48 PM
Have you looked into rake/trail for this setup?
Title: Re: USD fork direct fit, that's right... bolt on
Post by: Erwin83 on March 03, 2020, 11:12:16 PM
Have you looked into rake/trail for this setup?

Yes. As in.. i know it will change as this new fork is 40mm offset and the CB fork is 60mm offset.

How that will affect handling... time will tell.

Added: fork is the same length as the CB fork at around 70cm uncompressed. Wheel axle is in the same spot (center of the fork)
Title: Re: USD fork direct fit, that's right... bolt on
Post by: Erwin83 on March 05, 2020, 08:26:37 PM
Like a glove.
Title: Re: USD fork direct fit, that's right... bolt on
Post by: Rob62 on March 05, 2020, 09:04:24 PM
Good tip for anybody building a special....  8)
Title: Re: USD fork direct fit, that's right... bolt on
Post by: JamesH on March 06, 2020, 11:40:07 AM
Looks like a pretty cool setup. Nice work.
SimplePortal 2.3.5 © 2008-2012, SimplePortal