KR1-S Swingarm Bearing Tip

Wheels, shocks, forks, frame
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Light Smoker
Posts: 38
Joined: Fri Jul 25, 2008 4:44 pm
Location: Bristol UK

KR1-S Swingarm Bearing Tip

Post by Mohawk » Tue Dec 27, 2016 9:42 pm

Hi All,

This may be of value to some of you, if you find the swingarm needle bearings wear out or worn out & need changing.

I fitted a KR1-S swingarm to my ZZR250 & as part of the refurbishmant the needle bearing had to be replaced. When I stripped out the old ones I noticed the recess was much deeper than the bearing cage & as per some others a test fit of the arm showed a bit of end float. Careful measurement showed that I could fit 2 needle bearings per side, plus the end caps & I then had practically zero end float !

This doubles the bearing area for practically zero increase in friction, so should last a lot longer. my bike is about 15Kg heavier than the KR1-S & I'm no lightweight, so this should help. I hope this info is of some use.

As always YMMV.
Half a KR-1S, well the front anyway :)

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Posts: 397
Joined: Fri Jun 26, 2009 12:09 am
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Re: KR1-S Swingarm Bearing Tip

Post by Gerrit » Fri Feb 24, 2017 11:17 pm

Well spotted. I'll certainly be fitting second bearings on each side when assembling my project. It may be overkill but it won't do any harm.
"Mine is a long and sad tale", said the mouse.
"Indeed it is", said Alice, looking at the mouse's tail.

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