Item number: 43964

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

27 Show review
27 reviews

excl. shipping cost
to the delivery destination: USA

in stock

Delivery to USA is not possible.

  • 100 day return period
  • CO2 neutral shipping with DHL
  • Trusted Shop 4.89/5.00
Hollowtech II is using 24 mm axle and bearings. After studying all factors and testing, Shimano made the decision to adopt the 24 mm diameter axle and bearings to provide the best balance of rotating performance / stiffness / strength / sealing / weight in Shimano Quality.


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

Technical Information:

Bearings: steel
Bottom Bracket Cup Material: aluminium
Bottom Bracket Shell Material: aluminium


- bearing cups anodized
- recommended for XT FC-M8000, XT FC-T8000, SLX FC-M7000, FC-MT700, FC-MT600


Hollowtech II
The outboard bearings offer better weight distribution and more stability that provides a more efficient power transfer. The diameter of the bearing axle (24 mm) was an important factor in development because the axle has a positive effect on stiffness, stability, weight, and rotating efficiency.

Factory Number:



- 1 x Shimano BB-MT800 right bearing cup, bearings included
- 1 x Shimano BB-MT800 left bearing cup, bearings included
- 1 x Shimano bottom bracket shell
- 1 x Shimano TL-FC25 bottom bracket tool
- 3 x 2.5 mm spacer


-black / BSA : 82 g
-universal / BSA : 82 g

Customer Ratings

4.7 von 5

Give us your opinion on this product.

1 review in english
verified purchase
 on 11.05.2017
1 0

ready to install. Fast and easy screwed in. 3 bushings included.
remember to check L and R sides before put on.
adapter for hollowtech wrench included

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in stock 2 to 7 days up to 10 days up to 20 days
  • black/BSA 15.12€

Customer Ratings (27)


You have questions regarding a product?

+49 2405.450045 +49 2405.450045

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  • 100 day return period
  • CO2 neutral shipping with DHL
  • Trusted Shop 4.89/5.00
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Shipping and in store pick-up

We ship your order CO2-neutral using DHL. For Items that are in stock, delivery times are as follows: 1-2 business days within Germany, 2-5 business days for the rest of Europe, and 5-8 business for the rest of the world.

You also have the option to pick up your order in our retail store in Aachen.

100 day return period
CO2 neutral shipping with DHL
Trusted Shop 4.89/5.00

All prices are in Euro and excl. MwSt plus shipping cost to the delivery destination: USA.

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