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XR400 piston pin bearing

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Anyone know the piston pin bearing part number for a XR 400. I can't seem to find it on any parts fisch. Is it a caged needle bearing. I ordered a wiseco piston kit and I am not sure if one comes with it or not. Do they fail often. I never replaced one on a 2 stroke sled unless they were ran out of oil. Most engine shops around here do the same. If I can find a part number I would order one just to have on hand when the time comes for the tear down.

Edited by nitris223

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I meant to say piston pin bearing for the upper rod end.

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You're right, the parts fiches don't show the bearing. It's most likely a part of the rod end/crank assembly. You might call Service Honda http://servicehonda.com/index.php and talk to someone about just the bearing. They may have parts references that we don't see online.

You could also just wait til teardown and take it to a local bearing house and match it.

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The overwhelming majority of 4 stroke engines don't use wrist pin bearings or even bushings for that matter.

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