Hambini Racing BSA Bottom Bracket Shimano Crankset

(90 customer reviews)

£207.00 (£248.40 UK Customers)

This bottom bracket is designed to interface a Shimano 24mm Hollowtech 2  Crankset with a bike frame that uses a BSA Bottom Bracket.

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SKU: BSA-Shimano 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
  • Shimano Hollowtech 2 compatible
  • The drive and non drive sides are aligned via an internal male/female sleeve
  • Top of the range 6805  SKF/NTN/FAG/NSK bearings fitted as standard
  • Non contacting Seals
  • Removal and installation tool is available here

This bottom bracket was featured in the video shown below. The unit featured in the video was silver, the production unit is black.


Installation and service video is shown below

Additional information

Crankset Type






90 reviews for Hambini Racing BSA Bottom Bracket Shimano Crankset

  1. JB3

    Hambini didn’t do a very good job of explaining the key difference with this bb versus an OEM shimano BB. the centre piece is a very close fit between the sides, when this is tightened up, the alignment is perfect and adds to stiffness. When I’ve had split cups from Hope, the cup spirals within the threads when tightening and it’s slightly out.

    The spin difference is out of this world. I’ve ridden it for about 250km and you can feel the difference, it is way stiffer than the OE Shimano.

    This is a precision product and you can see the care and detail that he has taken to do it. I’d buy another one in a flash. I was skeptical as to whether it was worth it in threaded but his products and his service won me over. First class in every respect.

  2. Robert Riding

  3. Anonymous

    Having had some major bottom bracket issues with an older model Trek Madone I wanted my latest gravek bike to be a BB68 threaded bottom bracket. After much research and stumbling apon Hambini I decided to go all in and buy this to replace my Standard Shimano bottom bracket. To say the difference is night and day is the understatement of the year. The old BB is like a fisher price toy compared to this. The workmanship, fit and feel is so much better it nearly made a growing man cry. If you love your bike and engineering buy this. If not. Dont. But you wont regret it if you do!

  4. Jacob

    Fucking class!

  5. Anonymous

    Great product and fast shipping!

  6. Kevin

    Finally got a chance to install my BSA Hambini BB and I wanted to let you know how pleased I was! The BB replaces a Dura Ace 3-piece unit with < 600 miles on it. I knew yours was going to be better, but I have to admit I was utterly gobsmacked when I compared the two head to head. The resistance you could feel in the Shimano unit was truly shocking. I shouldn’t say it had gotten worse with a few miles on it. I just didn’t realize how freely the bearings could spin until I’d felt something with that much less resistance. I think it was actually that bad when I installed it. It’s now very hard for me to believe it was designed with that much resistance. It’s much easier for me to think I’d received a defective unit, but really, who knows? In any case, you’ve probably given me back 10-20 watts of free power. I cannot wait to go out and improve on all my Strava personal bests! Thanks and Cheers! I’m so glad I’ve supported a small business that’s made a truly superior product.

  7. Roy norman


  8. Craig S.

    Fantastic bottom bracket and beautifully crafted

  9. Peter Jansen

    I did not think you could get much better than a Shimano BB until I tried this. This BB makes all of the others look like toys. The remarkable thing is on YouTube, he portraits himself to be some idiotic stupid 5 year old engineer, the reality is very different. This BB has clearly been well designed and made. It is expensive but of you want the very best then this is it. When you get on the gas, you can feel the difference

  10. Peter S.

    I had been having issues with bottom brackets for years in my Ti road frame, after taping and facing and fitting a Hambini bottom bracket as recommended by a friend I now have a creak free bike and crank arms that spin beautifully. Thank you so much for producing such a quality product. Fantastic engineering.

  11. John T.

  12. Mark Hubbard

    I installed the bottom bracket and gave the initial spin test – much smoother than the ceramic bearings I was previously running. First ride showed a 10 watt increase in my average watts, the cranks feels so smooth yet stiffer – very impressed!

  13. Richard Bryan

    The difference between the Hambini BB and the Shimano Dura ace is incredible. I didn’t take the weight, but it’s definitely much heavier than the plastic Shimano product; perhaps 3 or 4 times heavier. And before installation I wasn’t quite sure it would be worth the investment. But the results after installation were outstanding. I made a short video on August 23rd and put it on my Facebook page.

  14. John W.

    Excellent BB, top quality. Installation was easy and Hambini was helpful to ensure I got the correct BB. Now to the performance, I was very impressed with the noticeable difference in feel, stiffness and my output. To me the cost was justified. Thanks!

  15. Muhammad

    Master hambini was correct… totally worth the purchase. My bottom bracket creek is now gone. Highly recommend

  16. Mike Norton

    BB, performs amazingly. Spin test went great. I highly recommend this lifelong BB if you want to reduce your friction, increase stiffness or eliminate BB cream. Expensive, but I think worth it. Shipping was faster than I expected.

  17. Anonymous

    Expensive but one of the best upgrades on my Ti bike.
    A very noticeable increase in power transfer over the fitted Shimano Ultegra BB.

  18. Mark H.

    Quality product, cranks spin so smoothly – my output has gone up by 10 watt average. If you have BSA BB buy no other BB.

  19. John S.

    Beautifully machined and easily fitted. Improved spin test for what that’s worth; 1.75 rotations to 4.5 rotations. When riding the pedals feel easier to turn too and I cycle faster! Now I can replace the bearings when worn with standard sized bearings of good quality rather than having to use Shimano’s short lasting non- standard bearings in their throw away, bottom bracket. Well done Hambini!

  20. Klaus

    Cycling around town on my brand new bike
    – maybe I’ll give this hot toy a like

    There’s a climb – I’m out of the saddle
    at 270 watts so that I don’t struggle

    tick tick tick what, at 400 watts
    that noise is absurd it’s driving me nuts

    tick click creak -hey- it’s the bb trying to say
    “But I’m no H7 and hope that’s ok!?”

    of course it is not I reply on the spot
    a 6 8 0 5 would do a better job

    but hope was not lost as I got in the post
    Hambini’s bb in a brown cardboard box

    down on my knees the installation’s a breeze
    if your bike creaks you might need one of these

    now climbing hard with me swinging my d**k
    all I hear is silence – that bb’s the lick!!

  21. Melvin Vega Velez

    So far so good, a little pricey ($310.09). I have an ITM Hydrus and it fit like a glove. You would be surprised how smooth this BB actually is. So far I have put 350 miles on this BB and still going strong. Will see how it holds up with time and miles.

  22. Jonathan Silverstein

    If you, serious cyclist, are not able to install a Hambini bottom bracket in your bike, that performance ceiling over your head is not made of glass, but rather iron. The Hambini BB is a requirement as basic as can be in cycling.

  23. ROBERT

    Excellent service and beautiful product. Precision engineering at its best.

  24. Edward

    Brilliantly engineered, smooth running, absolute must.

  25. Neil C.

    Seems like a quality product nicely made , quick response to my pre purchase query?

  26. Hobie

    My Miyata loves this BSA BB! I was running BR9100 BB and it really feels a like toy compare to this Hambini BB! Excellent product and fast shipping! I will order more for all my bikes! Thank you so much Hambini!

  27. Charlie Z

    Though listed as backordered, BB arrived in 6 days to San Diego (during covid). Installation took a couple minutes with BBT-9 wrench. Feels very smooth, though I can’t say more so than previous FSA ceramic that came with the bike. Knowing the bearings are properly sized, aligned and easily replaced is what this is about. Good stuff.

  28. Tibor S.

    A simple solution that has been engineered and executed extremely well. The design is inherently superior to others on the market. The accessibility, advice and customer service from Hambini has been exceptional.

  29. Adrian Kent

    Easy fit – works great! – smooth as hell! night & day versus the Shimano std.

  30. Lars

  31. Hobie

    Awesome product! Aerospace engineering to the farthest galaxy!

  32. Charles Z.

    Excellent BB, you french wanker.

  33. Andrew B.

    Initially very good but within 1 month i have had to service the bearings following a few gravel/winter rides!

  34. Dominic

    Fantastic service. Terrific advice. High quality component. Overseas shipping in under a week. I wish all my shopping was as seamless and customer focused.

  35. Adrian Lee

    Prompt delivery and lovely looking product of the highest quality

  36. John

  37. Anonymous

    Great bb

  38. Paul Schulman

    Getting this BB revived a 10 year old Allez frame. I’m so happy with this purchase and am recommending this company to all my bike friends. Price is worth the quality of these BBs

  39. Gregory G.

    Couldn’t be more pleased with the build quality of this bottom bracket. Quick email exchange with Hambini to ensure I had selected the right BB size set me at ease on a significant purchase. Well done!

  40. Robert M.

    Very happy with product replaced a dura ace BSA 68mm bottom bracket on my custom steel Mariposa waiting for the T47 model to upgrade my gravel bike

  41. Michael Willis

    Easy to order. Quick delivery. Beautifully engineered and made bottom bracket. Perfect match with Shimano BB install tool. Cranks spin luvly. Worth it. Very pleased.

  42. LGW Braams

    Great piece of engineering!

  43. Andy Gill

    Quality engineering, advice and prompt delivery.
    I can feel my pedalling effort through the bike more in comparison to regular 3 piece threaded bottom brackets.
    I can only presume more of my effort is getting to the wheels than before.
    Waiting on Hambini Hubs next (25% to me please).

  44. Jeremy

    Not cheap, but its good. Top, top quality piece of kit. Really easy to fit

  45. Jacobus

    Très très fluide. Merci beaucoup!

  46. Kev

    Works without any issues at all.

  47. Christopher Cave Jones

    I fitted two of these to my tandem. It cured the creaking and grinding noises I had been having before. Beautifully smooth. I wonder how long it will last before the bearings need to be replaced. The BBs on tandems take a lot of punishment.

  48. Simon

    All I have is the spin test:
    Previous – Dura-ace 9100 BSA BB comes to a slow stop after a few rotations. Hambini BB keeps spinning and then goes into pendulum mode back and forth.
    Easy process to order and quick delivery.

  49. Austin M.

    F*cking good c*nts

  50. Khalid AL muhairi

    No have any comments. Best quality from Hambini

  51. Shin Suri

    Superb, just feels faster.

  52. Iain

    Fast delivery. Beautifully smooth ride. No creaks.

  53. richardhounslea

    This is not a bottom bracket; it’s a work of art. You just know when inserting the drive side crank without any resistance (or resorting to hammer) and the crank arm just falls down, to-ing and fro-ing in it’s free abandon, that your alignment issues are banished for ever. Installation is easy, it looks ‘the lick’ and the cranks spin beautifully. To clarify an earlier review re: the weight, it weights 105g all in on my salter digital kitchen scales. That’s only 40g more than a Shimano Dura-Ace threaded and 10g more than a Tiagra. The weight is a wash and completely irrelevant for the sheer engineering precision on offer. If you’re hoverin’, just grow a pair and press the ‘buy’ button. If she complains, leave her… Thank you, Hambini and much success to you.

  54. Stuart Cunningham

    After seeing the reviews and watching Hambini in action I thought that this would be the optimum option for my new Enigma Escape dream build. The personal handling of my enquiry just confirmed that I was buying into hand built precision engineering. When it arrived it did not disappoint. Expesive yes.. worth it.. absolutely.. thanks Hambini..

  55. David M.

    Very quick delivery and really easy to install the bottom bracket. The bracket itself is a thing of beauty! I have rode over 1000km with the new BB now and I’m really impressed with it. The bracket area feels so much stiffer than the ultegra BB it replaced and acceleration just feels crisper. I would reccommend this upgrade to anyone. Thank you Hambini!

  56. Jakub B.

    Top notch!

  57. Nick P.

    Great customer service and very fast shipping. Product is incredible.

  58. Greg Fisher

    Built up the bike with a new groupset, set new pb’s with my rear brake rubbing on one side throughout.
    It certainly moves more freely than my previous, brand new shimano bb, looks and feels like a well engineered piece. Confirmed that the bb is well aligned on my seven frame. Increased bb stiffness with a bsa bb, retaining all the comfort of ti (or steel) for less money than a carbon fork. What more could you want from a bb?

  59. Anonymous

    Ordered this as a most wanted item for a while now! Even though I’m not the fastest guy on a bike, love the object and the craftsmanship behind it! Hambini was always there to reply to any question I had. Shipping was mega fast and the video installation make the process so easy!

    The way it’s spin is kinda hypnotic when you install it ahah! Had couple of ride and felt my cranks are turning so smoooooothly, I love it!

  60. Steve G.

    Fast delivery, well packed and Very High Quality.
    I’m very happy with my BSA BB.

  61. Chris Sears

    Y’all were just great.

  62. Derrick

    Easy installation. It running smooths as butter now.
    Thumbs up !!!

  63. Nils

    My last bottom bracket. As of today, my son is being nice to me – there is finally something of value to inherit….

  64. Anthony B.

    The fit and finish on this is first class, almost a work of art.
    Fitting it to my Specialized Sirrus X was child’s play. Out with the old, surprisingly crunchy bearinged crankset, quick clean up and the new one screwed in and lined up perfectly.
    I thought the old bearings were free running but compared to this they were damn near seized. I can definitely feel the difference when riding and the fact that the bearings are easy to source and change is an added bonus.
    Do I feel ripped off because of the price? No! Quality comes at a price and this is a quality item.

  65. Mark Clark

    Fast shipping to USA. Thanks

  66. Falk L.

    Awesome quality. Fast delivery. Very happy.

  67. HugeDan

    You will realize how inferior your old bottom bracket is when you fit this. You would never think a 5 year old designed and made it.

  68. ShropshireHambiniFan

    Being 5 years old, Hambini is no doubt into his toys. This is not one of them. Excellent product, excellent technical service and very fast delivery.

    I have never had previous dealings with engineers before and this experience was very revealing. A man who clearly takes great pride in his engineering and his product. The entire experience was a pleasure. Someone at the top of his game and rightly so. He makes bike shops look like amateurs.

    Totally different to his YouTube persona. Completely professional. Don’t let his YT fool you!!

    Thanks Very much

    A Hambini Fan

  69. Paolo

    Let me start saying that it’s not cheap for a bottom bracket. Shipping is extremely fast. And, you get what you pay for. It looks and feels way better than the shimano one already in your hands. Installation is easy and the cranks spin waaaaay more freely than with the original shimano one. While riding I did notice a difference in pedalling and you can also definitely feel the stiffness increase. So far I’ve not done more than 1000Km on it so I cannot comment on its durability, but I’m sure it will be better than the original ones. I can only recommend it further!

  70. Wai Hong L.

    Lovely bottom bracket, didn’t think it would make any difference, but wow, very smooth and easy to
    Install. Highly recommend this BB

  71. Jeffrey G.

    The ordering process was simple. The bottom bracket was shipped within a day and was in its way to me. Unfortunately, it was held up in Chicago clearing customs and took weeks before being put back in the system for delivery. I finally received it 50 days after ordering. The delay is not Hambini’s fault. I would recommend using FedEx, UPS or DHL for international shipping to the USA as an option. I had ordered the bottom bracket for a 160 km race, but was sadly without it. After arriving, I installed in about 5 minutes. The bearings are superb and my bottom bracket has never been so effortless. It’s expensive, but it is “the shit” and worth the price. Plus, the bearings are replaceable. The Shimano Ultegra bottom bracket it replaced doesn’t compare.

  72. Khalid AL muhairi

    Best quality

  73. J Denton

    Beautifully machined, fit perfectly and, all in, about a 15 minute job. Is it saving watts? Not a clue, but it felt like pedalling a new bike. Now I know some of that will just be fresh bearings, but it never felt like that before even when new….

    As soon as my other bike needs a BB refresh, it’s getting a Hambini BB.

  74. sktloa

    Really bang for your buck ….installation was flawless and it’s night and day compared to my shimano BB… hats off to you sir for producing such high quality product

  75. Alastair

    I changed the groupset (and almost all other parts) on the bike at the same time as the bottom bracket, so I’m not in a position to attribute specific improvements to just this. But it’s a quality piece of engineering, and something that I’m proud of having on my bike. It makes me feel good even just seeing it on the bike, which makes me more likely to get on the bike and go for a ride, which has got to be a good thing.

  76. Mark S.

    Extremely well made BB. Very glad I made this purchase.

  77. Stefan Koulouris

    Delivers on it’s promise of quality engineering.

  78. Anonymous

    Hambini really helped me out when I was a dog

  79. Holger K.

    Hello hambini fans!!!!!!!
    Unfortunately I had to pay 63€ of taxes in Germany due to the infamous brexit. This will make further purchases almost impossible as it raises the already high price to another level. Maybe you should figure out another distribution method… The bb itself is nice but has only run 300k so far, I can’t tell anything about long term results. You have to be very careful to avoid marks from the installation tool.

  80. Edgaras Staniulis

    Product is top notch, exactly what was expected. The current situation with EU/UK and border customs has been a problem at least in Lithuania, so I had to pay extra fees. Would suggest looking into Fedex or some other courier type delivery options, as I had some items shipped from UK without any customs interference through them.

  81. Dariusz

    Fantastic product, fast shipping. Strongly recommend

  82. Cara

    Worth the money, surprisingly.

  83. Anonymous

    Light, solidly made and installed without an issue.

  84. Chun

    Great service and it is probably the best bottom bracket you can buy on the market.

  85. Geoff

    I have bought two bottom brackets from Hambini. It goes without saying the engineering is class leading, however what may not be so immediately apparent is the level of service and support provided. Questions and queries are answered within hours and dispatch and support are pretty well immediate. The products are not cheap, however in terms of the level of engineering excellence, longevity, support and cost of ongoing ownership I consider it to be money well spent.

  86. Khalid AL muhairi

    Best quality of BB Hambini i have seen

  87. Klaus

    Fast shipping! Great product! Highly recommended!

  88. Matt Brill

  89. Peter Lange

  90. Jonathan

    I can’t comment on manufacturing tolerances or materials, other than to say this looks like it is very well made. Did a dry fit on my Merida alloy frame to check the BB shell in relation to the sleeve and to this fitter’s eye, it was blob on, so happy days. Once fully assembled, the cranks rotated very smoothly. A big improvement over the Shimano item it replaced. Now lets see how things are after a couple of thousand km’s, I don’t expect any issues. I will almost definitely choose more Hambini products in the future.

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Q & A

Can you fit a gxp adapter in there to make the left side 22mm? Oskar asked on 3 December 2021
It will fit if it's the external type. admin answered on 3 December 2021 store managerstore manager
Upvote (0) Downvote (0)
Hi Hambini, will this work in an s-works Tarmac SL7 & r8000 ultegra chainset? Just wanting to check before pulling the trigger (I have 2x your race pf30 bbs, absolutely class btw!) Brett Masterson asked on 15 August 2021
HI Brett, if it's the threaded BB version then yes, it's a drop in replacement. Usually the stock BB in this case will have something like 1.37 x 24 written on it. admin answered on 15 August 2021 store managerstore manager
Upvote (1) Downvote (0)
How long would you anticipate that the bearings should last before needing cleaning and also replacing? I know that’s like asking how long a piece of string is, but in typical UK road cycling.. Thanks Emerson asked on 9 June 2021
This is a how long is a piece of string question so for some guidance. If it's summer riding in the dry only and you don't put high torque through then it should go for 2-3 summers. The biggest problem and route to primary bearing failure on a bike is via contamination.If you end up getting some grit in the bearing then bearing life will diminish rapidly. You can spec full contact seals if you need the protection but the drawback is a big increase in drag. A lot of people use the non contact and then flush the bearings out every weekend. Unfortunately it's impossible to have good sealing and low friction, it's one or the other. By default this bottom bracket is setup for low drag but as mentioned you can spec full seals if you wish - just use the order notes box when ordering. admin answered on 9 June 2021 store managerstore manager
Upvote (0) Downvote (0)
Perhaps a stupid question. Do i need a spacer between the bottom bracket and the frame? Or should i put a spacer on the axle instead?(Shimano Ultegra 6600, HT2) I cant see any spacer in the video? Lukas asked on 1 June 2021
On a 68mm frame and HT2 you don't need a spacer. admin answered on 1 June 2021 store managerstore manager
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