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Shimano XT MT800 Threaded Bottom Bracket

Mfg PartNum:IBBMT800B
$25.99
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The Shimano MT800 Threaded Bottom Bracket is designed to work with the 24 mm spindles found on Hollow Tech II cranks like the Deore XT M8000. It borrows the smaller bearing design from the XTR and Dura Ace bottom brackets for less drag and better sealing.

Compatible with 68 mm and 73 mm English-threaded bottom bracket shells. Includes two 2.5 mm spacers and installation adapter for bottom bracket tools designed for standard 44 mm external diameter cups.

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

Bottom Bracket STD: English (BSA) 

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Reviewed 9/2/2019
by Mike Francisco
Cycling Enthusiast
Seattle
Value Rating
Overall Rating
Adapter Is Junk - but the bottom bracket is fine

The adapter that comes with this bottom bracket is made of plastic. It barely fit into the larger diameter Park Tool BBT69.2, and I had to tap it into place with a rubber mallet to get it fully inserted. Next I tried to use a torque wrench to achieve the specified torque (35-50 nm, I used a torque wrench set to 360 in-lb), but the plastic tool slipped off the bottom bracket a couple of times and quickly became useless. I managed to get it installed, but I wouldn't recommend relying on the supplied adapter to achieve the proper torque. I had to cut the adapter out of BBT69.2 and ended up ordering another bottom bracket tool for future maintenance.

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