Free Shipping Offer

Get free Standard Shipping with your $50 purchase today!

Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items.

|
|
WE'RE HIRING
Join the Team Today!
(42)

Shimano XT BB-MT800 Bottom Bracket

Item #: BB212Q00
USD$18.99 SAVE 27% USD$26.00 msrp
Choose Color
Black
Qty
In Stock
Found a Lower Price?

Shimano XT BB-MT800 Bottom Bracket

Shimano XT BB-MT800 Bottom Bracket

XT has gone 11-speed, and the new Shimano XT Cranksets are spinning on XTR/Dura-ace inspired bottom brackets. They have a smaller bearing size to enhance rolling efficiency and for shaving some weight. They are also better sealed to reject whatever muck mother earth conjures up and tries throw at them.

Shimano XT BB-MT800 Bottom Bracket

  • Small Ball Bearings for Better Rotation
  • Better Sealing
  • Fits threaded 68/73mm BB Shells
4.7 / 5.0
42 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
31
10
1
0
0
No need for more
Solid BB ridden xt for years. Tried XTR because it was on sale and did't notice a difference.
January 13, 2017
Purchased
1 year ago
Location:
Wasaga Beach ON Canada
Solid BB
Older shimano BB tool did not work

PROS: Easy To Install
March 15, 2016
Location:
Duluth, MN
Shimano changes everything, but gives you an adapter.
On time.
October 26, 2016
Location:
Rochester, NY
Very good BB
Light weight, extremely smooth, and looks to be very well sealed.
October 27, 2016
Location:
Ft Worth, TX
Shimano XT mt800 bottom bracket
Its a shimano bottom bracket, works well, its cheap, and its easy to install. enough said.
April 2, 2017
Purchased
7 months ago
Location:
Duluth, MN
BB rolls
Solid BB and superb for the price. Easy install with the right tool
March 10, 2017
Purchased
8 months ago
Location:
Eagle, ID
Turned that Innie to an outie
This was my first external bottom bracket so I wasn't sure what to expect. At first it felt a little cheap and plastic but I figured since it's XT it should be fine. Weighing in at 76g, that's a huge drop from the 312g on my old internal one. So far it's riding great. It came with a little adapter for your wrench since its smaller. I think I'm going to just buy the cup sockets though so I can torque them.
May 29, 2017
Purchased
3 months ago
Wow! Juse 20 bucks for all this performance!
Easy installation and super performance. Perfect match for XT crankset.
December 14, 2016
Purchased
8 months ago
Location:
Moundsville, WV USA
So far, Does the job, does it well
Replaced a heavy octalink with this. Hope it has the same durability
June 8, 2017
Purchased
2 months ago
Location:
Pa
Smooth pedaling
Decided to replace my bottom bracket for this one as mine was beginning to creak. Pedaling feels a lot smoother now! Great product.
March 6, 2017
Purchased
6 months ago
Location:
Orange County

Q & A

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 18 questions Browse 18 questions and 48 answers
will this fit on my 2012 Stumpy?
Andy on May 25, 2016
BEST ANSWER: No, this is a threaded bottom bracket. Your frame accepts a PF30 pressfit bottom bracket. You will need a PF30 to Shimano adaptor to run these cranks.
Can I replace a SM-BB51 bracket?
Schumacher on Feb 1, 2017
BEST ANSWER: Quick answer, yes. All the shimano threaded bottom brackets play well together. In my experience the shimano ones hold up way better then sram and are way less expensive then Chris king or the likes. You will need a bottom bracket wrench and a torque wrench to reinstall the crank arms and pay attention to the torque on the bottom bracket itself as it will have an impact on the drag on the bearings.
Or just pay a shop, but what fun is that. Good luck and keep riding!
Will this work with my SLX M670 Hollowtech Crankset
Ron on Jul 31, 2016
BEST ANSWER: Yes it will 
What bottom bracket tool do you need for this?
Paul on Sep 29, 2016
BEST ANSWER: The standard Shimano BB tool that was used with previous versions works. The diameter of this BB is smaller, but included with the BB is a sweet adapter.  The adapter fits over the bb and the tool goes over the adapter.  I actually like it better than using the tool by itself on the older (bigger diameter) bottom brackets.  So short answer is if you already have a Shimano BB tool, you do not need anything else.
Will it work with SRAM X1-1400 GXP crankset?
Iwan S on Jan 24, 2017
BEST ANSWER: It should as long as that crankset has a 24mm diameter spindle and I believe it does.
Will the Shimano BB-MT800 fit into a frame which currently has SRAM GXP bottom bracket? I am looking to change both cranks and BB to Shimano.
A shopper on Apr 21, 2017
BEST ANSWER: Yes this shimano XT BB-MT800 will fit the English threaded BB that the gxp was in .
I have a 2012 specialized camber. Is this the bottom bracket I need?
A shopper on Jun 13, 2017
BEST ANSWER: It looks like some camber models have press fit bottom bracket shells and some are threaded. You will need to figure out which version you have first. Then you would need to make sure your cranks are compatible with this bottom bracket. I'd consider going to your local bike shop and asking them, especially if you aren't familiar with bottom brackets (so many different tools, standards, etc.)
Will this BB work on a 68mm shell with a 73mm spindle using the included spacers?
Charles G on Jun 9, 2017
BEST ANSWER: Yep, it comes with three 2.5mm spacers. For a 68mm shell you'll put 2 spacers on the drive side and 1 on the non-drive side.
Hi, i have scalpel team . today its run with sram and BB30 pressfit. i want to change to shimano xt crank. do i need the xt mt800 or the pressfit version?
moshik on May 5, 2017
Shimano XT BB-MT800 Bottom Bracket
Shimano XT BB-MT800 Bottom Bracket
Shimano BB-MT800 Pressfit Bottom Bracket
Shimano BB-MT800 Pressfit Bottom Bracket
BEST ANSWER: neither of the xt m800 bottom brackets will work in that bike because it uses the bb30 shell. There are companies that make adapters to fit 24mm size cranks into your existing bottom bracket
Will this fit my Scott Aspect 950?
Logan on Apr 21, 2017
BEST ANSWER: Looks like the 950 uses a Shimano BB-UN-100, which, appears to be at least 68mm. So, this should fit just fine. However, the BB on your Scott is for tapered cranks. You won't be able to use the existing crank arms and would need to use SLX/XT/XTR crank arms. If you're already aware of that then disregard! Good luck!
Can I replace this bottom bracket from Raceface:
http://www.jensonusa.com/Threaded/Race-Face-Race-XC-External-BB?cs=Black

with this XT BB?
Thanks
Jorge on Oct 30, 2016
BEST ANSWER: You will need to confirm that you have a 24mm spindle.  If so, then yes, you can use the Shimano BB on Race Face cranks. 
Will this fit Cannodale trail 5 2015 I removed Tange 122 left 73 right ?
Bill K on Jul 19, 2017
BEST ANSWER: It should fit, I put it on my Cannondale Trail 3 bike, and I believe the frame is the same among all Trail bikes
will this crank fit a Shimano XT MT800 Bottom Bracket?
Stephen t on Jun 18, 2017
Shimano XT BB-MT800 Bottom Bracket
Shimano XT BB-MT800 Bottom Bracket
SRAM GX Eagle B148 GXP Crankset
SRAM GX Eagle B148 GXP Crankset
BEST ANSWER: No, you'll need the GXP bottom bracket for the SRAM cranks.
SRAM / Truvativ Team GXP Bottom Bracket
SRAM / Truvativ Team GXP Bottom Bracket
Will this fit my older style threaded BB?
Mtbracer7 on Jun 4, 2017
BEST ANSWER: Yes, this is designed for English threaded 68 or 73mm width bottom brackets.
Hi, is this 73mm euro or 73mm english?, because my frame bb is 73mm euro.
Rixzoom on May 12, 2017
BEST ANSWER: "Euro" and "English" threading are the same. So you should be fine. Use one spacer on the drive side cup when installing.
would this fit Intense tracer 275a 2016? thanx
IntenseDane on Apr 25, 2017
BEST ANSWER: Yes!
Is there a break-in period for this BB? I just installed mine and I'm not sure how freely the cranks should spin. Right now there's a bit of resistance from the BB.
bsurg on Jun 24, 2016
BEST ANSWER: If there is a small amount of resistance, that is normal. These bottom brackets do not spin as freely as square taper or octalink cranksets due to their increased sealing.
Will this work on my 2009 giant defiant?
Brian O on Jun 18, 2017

Jenson USA ships worldwide, including APO/FPO addresses. For a quote, simply add the items you are interested in to your shopping cart and look for the "Shipping Options" box. You don't have to login or create an account to see shipping charges.

Some manufacturers restrict where we can ship their products. If this item has shipping restrictions, they are listed below. If you'd like to buy an item that we cannot ship to your preferred address, we can accept your foreign credit card and ship to a USA address for you.

Get free shipping with your $50 purchase today when you choose Standard Shipping at checkout. Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items

Related Products
Chris King Press Fit 30mm Bottom Bracket
Chris King Press Fit 30mm Bottom Bracket Chris ...
Chris King Press Fit 30mm Bottom Bracket
Chris King Press Fit 30mm Bottom Bracket
Description:
Chris King Press Fit 30mm Bottom Bracket Chris King Press Fit bottom Brackets offer the same precision craftsmanship and high-performance construction as their very popular Threaded Bottom Brackets. The meticulous process of crafting the signature bearings ensures uncompromised durability and ...
FSA Megaexo Omega BB-4000 Bottom Bracket
FSA Mega-Exo Omega BB-4000 Bottom Bracket Whether you're ...
FSA Megaexo Omega BB-4000 Bottom Bracket
FSA Megaexo Omega BB-4000 Bottom Bracket
Description:
FSA Mega-Exo Omega BB-4000 Bottom Bracket Whether you're shredding the trails, grinding the gravel, pounding the pavement, a full-time racer, a casual club rider, or just ride for the pure enjoyment of it, you demand quality, and performance from your ...
Profile Racing Mid Bottom Bracket
Profile Racing Mid Bottom Bracket Profile Racing Mid ...
Profile Racing Mid Bottom Bracket
Profile Racing Mid Bottom Bracket
Description:
Profile Racing Mid Bottom Bracket Profile Racing Mid (19mm) bottom bracket for your BMX bike. Take your riding to the next level with precision bearings, custom anodized outer cap colors and Made in the USA Engineering!Includes Bearings, tube spacer, color ...

Need Gear Advice?

Our Gear Advisors are Ready to Help

Email Specials

Sign up for our weekly newsletter delivered via email.

Keep Pedaling

Free Shipping Offer

Get free Standard Shipping with your $50 purchase today! Just choose Standard Shipping during checkout.

Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items.