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  • Shimano XT M770-SLX M660 Bottom Bracket
  • Shimano XT M770-SLX M660 Bottom Bracket
NOW$19.99
  • RRP$29.99
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68/73mm
  • IN STOCK(5+)

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  • right Shipping amount : $9.99
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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.

Shimano XT/SLX/Zee Bottom Bracket Cups 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 XT/SLX/Zee Bottom Bracket from Chain Reaction Cycles, the worlds largest online bicycle store.

  • Colour: Black
  • Size: 68/73mm
Rated 3.9 out of 5 by 29 reviewers.
Rated 4 out of 5 by Shimano XT M770-SLX M660 Bottom Bracket Хорошая каретка. Небольшой вес. Проста в установке и обслуживании. Понравилась улучшенная система пыльников (пыльник утоплен в чашку подшипника). На предыдущей модели (Shimano Deore) такого замечено не было. 15 May 2014
Rated 5 out of 5 by Hasn't skipped a beat It's a bottom bracket, it turns a crank. It does this nicely, it is smooth and strong. 12 May 2014
Rated 5 out of 5 by Excellent Quality I got these with my XT cranksets and have been using them for the last 2 years in all conditions, from hot sunny weather to sloppy muddy condition and (knock on wood) they are still delivering. I have not serviced them, just sometimes a quick wash with the garden hose and that's it. For this price, you can't go wrong. 11 May 2014
Rated 5 out of 5 by Cheap and reliable. This BB lasted me a good 3 years of trail riding, in wet and dry weather. Cheap and reliable. Look no further if you're looking for something to last you a long time, and don't want to burn a big hole in your pocket. 12 April 2014
Rated 5 out of 5 by Отличный продукт Качество ХТ за приемлемые деньги. Отлично крутится. Легко устанавливается. Легкая. 5-6 тыс. км. безупречной работы. 10 April 2014
Rated 4 out of 5 by Bomb proof This BB is bombproof. Easy to install and pretty much needs no maintenance. 05 March 2014
Rated 5 out of 5 by Shimano XT BB Shimano XT quality does its job well and at a good price. 12 January 2014
Rated 2 out of 5 by Good value but don't last long With very minimal usage I have managed to go through 3 of these in a year. Seem to all very tight. I haven't been jet washing them or giving them much abuse, I guess the sealing isn't great. 06 January 2014
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7 Questions : 9 Answers

Product Q&A

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9 months 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.
9 months 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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3 months, 2 weeks 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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3 months, 2 weeks 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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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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3 months, 2 weeks ago
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10 months ago
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campinas,BR
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Answer: 
Esta peça serve em qualquer Shimano MTB com design Hollowtech de 68/ 73mm.
9 months ago
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2 weeks, 6 days ago
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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

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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2 months, 3 weeks ago
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Ormskirk,GB
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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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1 answer

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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2 weeks, 6 days ago
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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.
2 weeks, 1 day ago
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1 answer

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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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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