Rail (625Wh) steering bearings

[Mlopez]

Could someone tell me what size of steering bearings trek aluminum rail has

 

[slomtbr]

Trek Rail headset bearing

After 1200km and mainly stored and washed outside the headset bearings of my Trek Rail has come to an almost end. The lower bearing doesn't seem to have any protection from weather. When I bought the bike I opened all bearings and filled them good quality grease. I think I'll clean the headset...

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