Thread: BMC Alpenchallenge ACO1 upgrade (from 105 to Ultegra)
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Old 09-19-17 | 06:08 AM
  #19  
ColonelSanders
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From: Vegemite Island

Bikes: 2017 Surly Troll with XT Drive Train, 2017 Merida Big Nine XT Edition, 2016 Giant Toughroad SLR 2, 1995 Trek 830

Originally Posted by raqball
AFAIK, they use bearings.

Edit: Just looked at the spec sheet from Shimano and it says: Multi-Bearing 2:2

Yeah the XTR brakes are pretty nice and Shimano is awful proud of them ($$$$$$$$).. I searched pricing for the XTR M9000 Race and will use Shimano XTR SM-RT99 Rotors. Total price = $495! = Yikes!

I found the rotors on sale at Amazon for $50 each so I'll probably snag those now and keep looking for sales on the XTR M9000's.
I'll ask the silly question Why don't you get XT brakes instead of XTR?
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