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  • Shimano XT-SLX BB70 Hollowtech II Bottom Bracket
  • Shimano XT-SLX BB70 Hollowtech II Bottom Bracket
NOW$16.99
  • RRP$29.99
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68/73mm
  • IN STOCK(5+)

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Shimano XT/SLX/Zee Bottom Bracket

Bottom bracket cups that fit XT/SLX/Zee Cranksets, and are available in 68mm/73mm English threads.

Features:

  • Genuine Shimano Hollow Tech II bottom bracket assembly.
  • Set includes left and right hand cups, spacers, inner cover, and inner O- rings.
  • Light weight seal structure helps to remove vital grams.
  • Sealed cups keep out dirt and water.
  • Maintenance free.
  • Compatible with 68mm and 73mm shell.
  • Durable silver anodised finish.
  • Easy installation.

Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

  • Colour: Black
  • Size: 68/73mm
 
Rated 4.1 out of 5 by 44 reviewers.
Rated 5 out of 5 by Great quality and price Bought this as my current XT is feeling a bit gritty , lasted 3 years in UK weather , superb. 19 October 2014
Rated 5 out of 5 by Takes a pounding 2 years, 6000 km of rocky single track and it's still on the job. Can't ask for more than that. 12 October 2014
Rated 4 out of 5 by Good price Bottom bracket The bottom brackets are a pretty quick wearing item that needs to be replaced pretty often if you ride a lot. Here on CRC it was much cheaper that other websites for the same item. May not come with original packaging though in the U.S but that dosnt matter though. Good bottom bracket and super smooth out of the box. Not really much of a difference between the slx/xt bottom bracket and the deore though. They appear to be the exact same thing. The difference between the saint bb is mainly the color. Although currently i am running a saint bb and it is holding up slightly better than the slx/xt. If you need a cheap good bb id go with slx/xt because u know ur getting a quality product and not worth paying a ton of money on something you are going to have to change in 2 months. 07 October 2014
Rated 5 out of 5 Hope it lasts londer than Deore! Fitted a Deore bb about three months ago and it started making a metallic clicking noise so I decided to upgrade to XT. It looks exactly the same, very easy to fit and it's been on a month, let's hope it lasts longer than Deore. 03 October 2014
Rated 3 out of 5 by Great price For the money there great, saves spending daft money... 30 September 2014
Rated 4 out of 5 by Buen recambio Perfecto encaja sin problemas y es mas estanco que el anterior 28 September 2014
Rated 5 out of 5 by Установка не доставит проблем За время эксплуатации не выявлено проблем с попаданием пыли и воды внутрь подшипников. 15 September 2014
Rated 3 out of 5 by Good while it lasts... It is easy to fit and operates smoothly, not sure the durability is that great though. I go out in all weather, but I don't do a huge amount of miles and I'm not that fast either and this failed in under two years. If I was a more serious rider I think it would've failed a lot sooner. Also, I would recommend you replace it at the first signs of play, I didn't and it wore a groove into my crank arm, not sure if this will have a negative effect on how long the replacement BB will last as they seem to be an interference fit. 05 September 2014
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14 Questions : 19 Answers

Product Q&A

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1 year, 1 month ago
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skipton,GB
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Answer: 
The Shimano Hollowtech bottom brackets are universal between all the Hollowtech cranksets as they share the same spindle and interface.

This means you can use this bottom bracket with your Hone cranks.

The XT/SLX/Zee just distinguishes the quality of the BB compared to others Shimano have available.
1 year, 1 month ago
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Answer: 
As long as your Hone cranks use a 24mm spindle you'll be fine and Shimano HTII BB's are all swappable so no issues there.
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7 months ago
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2 answers

Interchangeability with SM 51 BB

Hi,

My Mountain bike currently has a Shimano Bottom Bracket with the marking SM51 BB HI. I think it's probably the Shimano Deore Bottom Bracket which you're selling for £8.99. It's now stiff and needs replacing and I would like to upgrade. Will this one fit as a direct replacement with my Deore cranks. How is this one better than my existing cheaper Bottom Bracket?

Many thanks.
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7 months ago
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York,GB
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Answer: 
The BB51 is the Deore level bracket, yes. These XT level brackets will also be compatible and work well as an upgrade to the original. The only real difference between the various brackets is the materials and bearings used, which helps to reduce weight and add longevity. There are also aftermarket options such as the Hope brackets, which are made as a direct upgrade to the standard Shimano bracket.
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7 months ago
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Answer: 
It will replace your BB51 indeed. No need to worry- if your cranks are HTII then all HTII specific bottom brackets will fit as they are interchangeable.

The XT/SLX bottom bracket (SM-BB70) that you are considering to upgrade with has better bearings and slightly better seals. That simply translates into longer lifespan and resistance to the elements.
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2 answers

mountain or road ?

Is this bracket for a road bike or a mountain bike, I have seen on another web site mountain clearly written on the cups but its not visible in the picture here.
I need to replace my own shimano xt holo tec bottom bracket and I want to ensure that I order the correct one.
My current cups don't have mountain written on them so I may have fitted the wrong ones last time.
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4 months ago
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Stafford,GB
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Answer: 
Yes; this bottom bracket will be a perfect replacement for your XT cranks.

Not all Shimano bottom brackets state Road or Mountain on them; however the Road BB-cups are slightly larger which becomes obvious when adjusting the chainline after setup. They will also generally be sold in reference to the model number which signifies what discipline they are intended for.
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Answer: 
It'll be fine for mountain bike use, in fact im using the same one for my mountain bike
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3 months, 1 week ago
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2 months ago
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Answer: 
If I'm not mistaken Solum is Spanish BB which means that it will not fit. You'll need a spanish BB for your frame. They're not as cheap but they're considered better than standard threaded BB (subject to bearing obviously).
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Answer: 
I think for this frame it requires a bmx style bb. A press in bottom bracket for 3 piece cranks. This bottom bracket has threads to screw into the frame. By looking at pictures of this frame it appears to not have any threads. I could be wrong but u should check ur frame and see if it has threads or not. Another thing to consider is looking for the bottom bracket width. Dh bikes and some dirt jumpers have 83mm bottom brackets while trail bikes have 68/73mm. Hope this helps.
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2 answers

Which thread type does this bracket have?

I know that my frame has a BSA 73mm thread. Can I use this bracket for replacement?
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Answer: 
This BB will suit frames that have a 73mm threaded bottom bracket shell. This will allow you to fit an MTB Shimano Hollowtech II Chainset standard.
4 months, 1 week ago
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Answer: 
it has english thread and it fits both 68mm(with spacers come in the box) and 72mm bottom brackets.
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Answer: 
Esta peça serve em qualquer Shimano MTB com design Hollowtech de 68/ 73mm.
1 year, 1 month ago
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1 answer

BB5700 1.37 x 24

Hi, I'm looking to replace the bottom bracket on my road bike as the current one has developed an annoying clicking noise. The markings on my current one are BB5700 1.37 x 24. Would this XT bottom bracket fit?
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Answer: 
BB5700 man's that you're running 105 series nbottom bracket and 1.35x24 tpi is just a thread descriptor which is a universal ISO (British) thread.

If your bike has got a HollowTechII specific crankset (in your case 10d HTII) then it will fit perfectly fine. However if I was you I'd use a road specific BB as this is a mountain bikes specific bottom bracket.
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Answer: 
Not being a Trek dealer I can't be certain, but I believe the 2008 Ex8 frame would be running a standard 68/73mm BSA threaded bottom bracket shell, so this XT bracket should be fine, and will run with your 24mm spindle Deore cranks. If you double check with your local dealer they will be able to confirm for you.
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1 answer

Will this work for my current SM-BB70?

Looking to replace my current SM-BB70. Will this be a direct swap?
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Vancouver,CA
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Answer: 
Yes, this XT/SLX bracket wil be a direct replacement for your SM-BB70, no problem.
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Answer: 
This bottom bracket would not be the best option, the correct Race Face BB will perform better over time with this specific crankset.
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