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Old 11-02-25 | 05:06 PM
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maddog34
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From: NW Oregon

Bikes: 1982 Trek 930R Custom, '91 Diamondback Ascent w/ XT, XTR updates, Fuji Team Pro CF road flyer, Specialized Sirrus Gravel Convert, '09 Comencal Meta 5.5 XC, '02 Marin MBX500, '84 Gitane Criterium bike

Originally Posted by Ilovemyride
Right exactly, but something isn't right. Im thinking maybe I was sold the wrong inside diameter lower headset bearing.
FSA, Cane Creek, and Aheadset maintain a large list of application-specific Headsets for most recently manufactured bikes... you may want to look up your bike and verify which headset bearing sizes are correct for your bike... the headset bearings, unfortunately, get sold online with rather generic and un-detailed info at times... calling them a 42mm when they really measure 41.7mm, etc.
and then, there are press fit tolerances involved, too...
i know.. it bugs me too.
it is what it is...

so... no tapered wedgie for the bottom bearing, it goes on with the inner chamfer facing down, and the wedgie is for the top of the top bearing, and it's inner chamfer faces up.
Watch The Vids on Threadless Headset adjustment.
and don't skip the careful small torque wrench use.
Crushed CF turns to an expensive, more flexible, piece of garbage.also.. consider that TWO sizes are in play on the fit to your bike... the frame is an INTERGRATED headset design... both bearings need to fit nicely in those head tube bores too....

Last edited by maddog34; 11-02-25 at 05:22 PM.
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