Topic: Replacing Obsolete Early Front Fork Bushings

[Artfrombama]

My 750K2 had two cracked and worn upper front fork bushings (51451-319-000). I found one NOS
A little measuring and I find an off-the-shelf 1 3/8" ID x 2" OD x 3 L bronze bushing fills the bill.
The outside diameter must be turned down to fit the lower legs.
Depending on the shaft size (+/- .002"), the ID may require a light hone.
The OEM material is cast iron, I feel that bearing grade bronze may be better suited.

[bradweingartner]

Consider me interested to see how it works out.

I'm not sure the bronze is hard enough though? Maybe it is, what do modern bikes use?

[lordmoonpie]

Consider me interested to see how it works out.

I'm not sure the bronze is hard enough though? Maybe it is, what do modern bikes use?

I got a set of forks from a breaker that were off a K0 and they had bronze bushings.
Nightmare to source these parts though so if you come up with a cheap option to source new ones I'm well interested in the how to...

[voxonda]

Surely can make a set if I have the exact measures. Or send me one to look at.

Cheers, Rob

[Artfrombama]

Had to polish out a couple thou from the ID to interface with my new "Forking By Frank" fork tubes. Standard "off the shelf" $12. bronze bushing (x2).

Nice and tight, no slop.