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Headset Bearings

gdiddygdiddy Posts: 24
edited March 2019 in Workshop
Hi,

Sorry about the newbie question. I need to change my headset bearings on my Norco Valence road bike.

The spec is:
Headset Type Integrated Tapered
S.H.I.S. IS42/28.6 | IS52/40
Upper Headset Diameter [mm] 42
Lower Headset Diameter [mm] 52.1

I can find 'lowers' drop in bearings ti fit, but I'm getting a bit confused looking for the 'upper' bearing to purchase? I can find the correct size for the upper headset, listed as 'lower'... am I able to just flip it and fit to the upper?

Any advice would be much appreciated.

Thanks

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