Stem Swaps


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Post Tue Jan 07, 2014 12:50 pm

Stem Swaps

Hi Guys,

I need a stem taking out of a Kawasaki kh125 and popping in to a Honda NSR125RL bottom yoke.

only problem is that the kh125 stem is thicker than the nsr125 stem so the nsr125 top and bottom yokes needs milling out.

both stems are welded at the bottom.


Is there anyone here that can do the job? I will pay obviously.
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Post Tue Jan 07, 2014 1:31 pm

Re: Stem Swaps

Foggy wrote:Hi Guys,

I need a stem taking out of a Kawasaki kh125 and popping in to a Honda NSR125RL bottom yoke.

only problem is that the kh125 stem is thicker than the nsr125 stem so the nsr125 top and bottom yokes needs milling out.

both stems are welded at the bottom.


Is there anyone here that can do the job? I will pay obviously.


are the smiler lengths? Can you not keep the NSR stem in the yoke and use different bearings?
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Post Tue Jan 07, 2014 2:40 pm

Re: Stem Swaps

there is a machined lip part way down from the top to stop the bearing top cup thing coming down too far and the thread would need machining further down because the stem is around 1 inch too long....both top and bottom bearing (retainers?) are smaller in width than the kh125 ones so there is a lot of side to side movement, almost enough for the bearings to come out ( loose bearings )

here's a pic of the gap/spacer i used underneath.


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Post Tue Jan 07, 2014 8:44 pm

Re: Stem Swaps

Welded stems are a pain in the arse.

I cut mine in the middle to make it the correct length and then used and insert to hold it together.

Measure the stem diameter and the headstock hole size. Pop to simply bearings and pop in the measurements to see if you can get bearings that would fit both.

The other thought is new forks in the old yokes. What are the sizes like?


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Post Wed Jan 08, 2014 6:07 pm

Re: Stem Swaps

could you use the KH yokes with the NSR forks??
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I quite like it round here!

Posts: 228

Joined: Mon May 28, 2012 11:19 am

Location: Hereford

Post Wed Jan 08, 2014 7:54 pm

Re: Stem Swaps

kh125 forks are 27mm and the nsr forks are 34mm ( Marzocchi ) so wouldn't fit.

I have sent the yokes and stems into a local engineer and he's switching the kh yoke into the nsr yokes, fingers crossed!
'' If your rear tire has plenty of tread after a ride out, you haven't ridden hard enough ''

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