Hambini Racing BSA Bottom Bracket SRAM DUB

(9 customer reviews)

£291.00 Ex. VAT

This bottom bracket is designed to interface a SRAM DUB  Crankset with a bike frame that uses a BSA Bottom Bracket.

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SKU: BSA-DUB Category:


  • BSA 68mm Threaded (1.37 x 24TPI), Often referred to as English, BSC or ISO threading.
  • Drive side has a Left Handed Thread, Non Drive Side has a Right Handed Thread
  • 29mm (28.99) DUB compatible
  • The drive and non drive sides are aligned via an internal male/female sleeve
  • Top of the range 6806  SKF/NTN/FAG/NSK bearings fitted as standard
  • Non contacting Seals
  • It is extremely important that any frame this BB is fitted to has a flat face (0.02mm) that is perpendicular to the threads. Diameter of 52mm
  • Tightening Torque of 8Nm (BSA Bottom brackets will self tighten)
  • Fitting instructions are here,
  • The fitting tool to install this is available here 

This bottom bracket features the largest bearings of any commercially available unit for DUB axles. They are standard 6806 bearings which have a load rating that is significantly higher than the 4029 bearings used by other manufacturers.

Please be aware that DUB Axles vary in DBCA and you may need additional spacers. Please read the guidance on this here

The 24mm variant of this bottom bracket was featured in this video. The unit featured in the video was silver, the production unit is black.



Additional information

Crankset Type



9 reviews for Hambini Racing BSA Bottom Bracket SRAM DUB

  1. Anonymous

  2. Christer J.

    Beautiful product. Quality is a quite a few steps ahead of the rest.

  3. Mischa

    This works really well, it is a big improvement over the wheels mfg unit I had in before. Installation was a breeze with the recommended tool.

    In his YouTube you will see small bits of Hambini’s engineering knowledge. When you email him, you get customer service from an Engineer and a very good one. It’s a completely different experience to dealing with a bike shop. Yes it’s expensive but the alternative (Ceramicspeed) is just as expensive and you don’t get anywhere near the same level of customer support.

  4. Peter M.

    Fantastic service and a Jewellery quality product 10 *

  5. Bill Stretton

    I tried fitting this and initially ran into some issues with the frame. It was not flat and required machining. I took it to my local bike shop to get it fitted, they faced the frame and then fitted it to the required torque spec which they claimed was extremely low.

    I’ve had it on for 6000km and it has not missed a beat. I would buy another one in a flash. Well made, technical support second to none. Just make sure you read the instructions. The average bike shop doesn’t seem to have a clue.

  6. Anonymous

    Very beautiful and spins incredibly well. This will, without a doubt last for a long time.

  7. purchase327

    The mechanics at my local shop were visibly excited about this BB. When I picked up the bike they insisted on unshipping the chain and spinning the cranks–which kept going for a hell of a long time–while they grinned and giggled.

  8. Oz

    Best BB in the biz IMO!

  9. Barry K.

    Upon dry fitting this BB, I instantly realised my $5k bike frame had a far from flat BB face. I got that rectified, fitted it and I’ve had it for coming upto 10,000km. Faultless performance

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Q & A

Are the bearings and endcaps used the only difference between BSA bottom bracket for SRAM/DUB and Shimano? (By swapping bearings and endcaps, could I modify to use Shimano cranks?) Moot asked on April 24, 2023

You could swap the end caps out to take it down to 24mm and give you the versatility but it's not a modification I actively suggest or warranty.

admin answered on April 24, 2023 store manager
(0) (0)
Will this fit MTB shell width? Specifically for ‘21 Epic, which is a 73 mm width. Pete asked on December 19, 2021

This won't do the job. You'd need to email in and a special can be built up for you.

admin answered on December 19, 2021 store manager
(1) (0)

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