1.800.651.4050 Mon-Sat 8am-5pm PT
Shimano XTR BB93 Bottom Bracket Shimano XTR BB93 Bottom Bracket
Click to zoom

XTR BB93 Bottom Bracket

Mfg PartNum:ISMBB93B
  (1 customer reviews)
Earn $2.63 in Rewards credit. Click to learn more.
This color/size is not eligible for Rewards points
In Stock Now
This item is currently not in stock. Click Notify Me to receive an email when the item becomes available.
InstantPrice MatchWhat is this?
Free Shipping on Orders Over $50*

The XTR BB93 takes a cue from Shimano's top road bottom brackets, now featuring smaller diameter bearings to save weight. This new design drops 21g off its ancestor and features a new seal system which reduces friction by 50%.

The XTR BB93 Bottom Bracket is available with English threads and includes three 2.5mm spacers for use with 68mm and 73mm shells. Compatible with all HollowTech II cranks. 77 grams.

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.

The product weight specified is an approximate weight based on the manufacturer's specifications (if available) or our measurement of one or two examples. For most products, the weight will typically vary by 5% to 10%.


Weight: 77 grams


Weight: 77 grams


Mfg PartNum: ISMBB93B 


Bottom Bracket STD: English (BSA) 

Ordered by Most Relevant First
5 stars
4 stars
3 stars
2 stars
1 stars
Super easy to install
by slevasse
Cycling Enthusiast
Laconia, NH
1 of 1 customers found this review helpful.

I picked this up after my RaceFace bottom bracket decided to seize up mid ride. It's pretty lightweight and was very easy to install. Bearings feel very smooth and while I haven't really put it thru very much, it has stood up to some pretty nasty mud and muck with flying colors.

Reviewed 1/3/2015
Was this review useful to you? Yes/No
Thank you for your feedback.

Articles will open in new tab.

Comparing bottom bracket types and standards.
You wanna go fast? Join the ceramic revolution!
Make your upgrades count. Here's the equipment that will help you ride your bike faster.
Campagnolo vs. Shimano vs. SRAM: demystifying groupsets.
What to consider when selecting a crankset for your road bike.