Shimano XT / SLX / LX BB-MT800 Hollowtech II Bottom Bracket

  • Shimano XT / SLX / LX BB-MT800 Hollowtech II Bottom Bracket - Components - Shimano - - - - Speedlab
  • Shimano XT / SLX / LX BB-MT800 Hollowtech II Bottom Bracket


Shimano XT / SLX / LX BB-MT800 Hollowtech II Bottom Bracket


Price incl. VAT excl. Local Import Taxes & Shipping Costs.

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The XT / SLX / LX BB-MT800 bottom bracket by Shimano - with aluminium bearing cups
Shimano BB-MT800 is a BSA bottom bracket recommended for XT, SLX, LX and groupless 24 mm Hollowtech II cranks. It fits into bottom bracket shells that are 68 or 73 mm wide. The bearing cups are made of light aluminium and are anodised.

Application: Cross Country, All Mountain, City & Touring
Type: BSA
Shell Width: 68 mm, 73 mm
Axle Diameter: 24 mm (Hollowtech II)

Technical Information:
Bearings: steel
Bottom Bracket Cup Material: aluminium
Bottom Bracket Centre Tube Material: aluminium

- anodised bearing cups
- recommended for XT FC-M8100, FC-M8120, FC-M8130, FC-M8000, XT FC-T8000, SLX FC-M7100, FC-M7120, FC-M7130, FC-M7000, FC-MT700, FC-MT610, FC-MT600

Hollowtech II
In the Hollowtech II crankset, the right crank is firmly connected to the bottom bracket axle, achieving an optimum balance between maximum stiffness and minimum weight. The externally mounted bottom bracket offers better weight distribution and stability for more efficient power transmission. Why a 24 mm diameter bottom bracket? The diameter of the bottom bracket axle and the bearings was an important factor in the development, as the bottom bracket axle has a significant impact on stiffness, stability, weight and rotational efficiency.

Manufacturer Part Number:

- 1 x Shimano BB-MT800 right bearing cup, incl. bearings
- 1 x Shimano BB-MT800 left bearing cup, incl. bearings
- 1 x Shimano centre tube
- 1 x Shimano TL-FC25 bottom bracket tool
- 3 x 2.5 mm spacers

Weight: 82g


What type is Shimano XT Hallowtech II MTB bottom bracket?
The Shimano XT Hallowtech II MTB bottom bracket is a threaded type.

What width shell is suitable for the Shimano XT Hallowtech II MTB bottom bracket?
The Shimano XT Hallowtech II MTB bottom bracket is available in 63 mm and 73mm shell width standard.

What diameter crank diameter is Shimano XT Hallowtech II MTB bottom bracket compatible with?
The Shimano XT Hallowtech II MTB bottom bracket is compatible with 24 mm crank diameter standard. 

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SPEEDLAB ships from Monday to Friday with the exception of public holidays. We ship complete orders only, i.e. the dispatch usually takes place as soon as all ordered items are ready for dispatch. Please contact the SPEEDLAB service team if you wish a partial delivery.


Depending on destination country, package size, volume and weight, SPEEDLAB ships with the carriers German Post, DHL, German parcel service, DPD, USP. Deliveries of bulky goods, for example complete bicycles, will be handled by selected forwarding companies.

For return shipments SPEEDLAB cooperates with German Post, DHL and DPD. Large bulky goods like bicycles will be picked up by a forwarding company.

In Germany and most European countries the are shipped with DHL, Hermes, DPD, UPS, German Post.




  • Germany 5,99 Euro DHL / DPD / Hermes / German post
  • Rest of Europe: 13,99 Euro (DHL, DPD, Hermes)
  • Rest of world: 29,99 Euro DHL
  • Cash on Delivery + 4,9 €


For all items marked with this symbol, which are ordered on business days from Monday to Friday by 3 p.m. (CET), we offer the DHL Express shipping option or UPS for selected delivery countries. The DHL Express&UPS option is subject to an additional surcharge. It can be selected during the ordering process, provided that all items in the shopping cart offer the Express option. In addition the DHL Express option must be available for the selected delivery adress.

An order within the EU usually arrives the following business day. Depending on the postal code of the delivery address, longer parcel delivery times may occur.


  • Germany 15 Euro (DHL, UPS, TNT)
  • Rest of Europe – 49 EURO (DHL, UPS, TNT )
  • Rest of world – on request

In-stock items will be shipped within Germany in 1-2 working days, within Europe and worldwide in 1-3 working days. Unfortunately the delivery at a certain date given by you is not possible due to logistic reasons.

Should the ordered item not be in stock, the delivery time is extended analogue to the delivery in our warehouse. Information regarding the availability can be obtained at +49-7022-9-777-818 or

Please note: The ordered goods may be subject to a partial delivery.

Import Taxes, Customs Duties and Fees / National VAT

The indicated prices including VAT. In addition to the calculated SPEEDLAB shipping costs customers not living in the EU have to pay the national VAT and duty in their country for the imported goods.

Transport Damage

If you receive a damaged shipment please refuse the receipt if possible. Anyway, please get in touch with the Bike24 service team by e-mail or phone as soon as possible. We will be happy to solve the issue.


The SPEEDLAB team will do its best to fulfill your change requests.

The wish to cancel must be declared within 14 days after receipt of the goods. The return must take place within 14 days after the declaration of the cancellation.

Before the actual dispatch of your order, it can still be canceled. Please send us your request as soon as possible using the contact form or call us by phone. Should the payment have been charged already, it will be refunded in a timely manner.

Pack everything you want to return to SPEEDLAB carefully and include your order number. Remove the old shipping label and attach the return label to the package. You can return the package at DHL and Hermes stations. For all other countries: Please contact us with your return request and our customer service will arrange the process. Usually, SPEEDLAB covers the return costs.

A return will be processed at SPEEDLAB within a few working days. Once your request has been successfully processed it will be confirmed by e-mail. A possibly necessary refund will be processed directly afterwards.


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