Hambini Racing BB386EVO Bottom Bracket Shimano Crankset (Black)

(35 customer reviews)

£217.00 (£260.40 UK Customers)

This bottom bracket is designed to interface a Shimano 24mm Hollowtech 2 Crankset (Sora, Tiagra, 105, Ultegra, Dura Ace) and Shimano Compatible (Some ROTOR and FSA) 24mm Cranksets with a bike frame that uses a BB386EVO Bottom Bracket (46mm Nominal Inside Diameter x 86.5mm wide). A lot of manufacturers refer to this standard as BB386, without the EVO.

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SKU: BB386EVO-Shimano-Racing Edition (Black) Category:


This bottom bracket is designed to interface a Shimano 24mm Hollowtech 2 Crankset (Sora, Tiagra, 105, Ultegra, Dura Ace) and Shimano Compatible (Some ROTOR and FSA) 24mm Cranksets with a bike frame that uses a BB386EVO Bottom Bracket (46mm Nominal Inside Diameter x 86.5mm wide). A lot of manufacturers refer to this standard as BB386, without the EVO.

Hambini Racing Bottom Bracket Overview

  • 20% stiffer than Hambini Standard Bottom Brackets
  • As used in the Pro-Peloton
  • Aerospace Tolerances for a no slop fit
  • One Piece design aligns the bearings perfectly, reducing the likelihood of creak
  • NTN Bearings Ultra Low Friction Beraings fitted as standard in Road applications. Fully Sealed NTN/FAG Bearings fitted in MTB Applications
  • No Hammers are required to install or Remove the Bottom Bracket
  • Fully Serviceable, the bearings can be replaced quickly and easily
  • It is supplied with fitting adaptors in M12 (or 1/2 inch), a press or studbar will be required to facilitate installation
  • One year warranty on the bottom bracket body

Precision Engineered and Manufactured in the United Kingdom

Hambini Bottom Brackets are amongst the lowest friction bottom brackets in the world. They are used by recreational cyclists, road racers, triathletes and time trialists from around the globe. They are of proven design and are manufactured to Aerospace tolerances, using Aerospace materials by an Aerospace Engineer. These units are of a one piece construction which makes them inherently resistant to creak, they will maintain perfect bearing alignment and function under loads in excess of 4000W.

Hambini Bottom Bracket Reviewed by an Engineer

Hassle-Free Maintenance

All Hambini bottom brackets can be installed and removed with a conventional bearing press, they use a controlled method of installation using the recommended fitting adaptors, they require no hammers or specialized tooling for removal. Additionally, the wearing component – the bearings – can be serviced in situ or removed within just a few minutes. The bottom bracket has been designed to be fully rebuildable.

Unrivalled Performance

Unloaded bearing spin tests are a poor measure of frictional performance but they do highlight good bearing alignment. The link below is to a video of a Hambini Racing Bottom Bracket that had completed 10,000km

Class Leading Parasitic Drag Loss (Friction)

The graph below shows how Hambini bottom brackets perform in comparison to the bottom brackets of other manufacturers. The test conditions model real world cycling and more importantly mimics realistic frame tolerances. All of these tests have been conducted with an eccentricity of 0.1mm which is generally the maximum permitted in frame specifications – the reality is tolerances have been known to be much worse than this. Misalignment is more critical to friction than the type of bearing ball material, a slight misalignment can easily outweigh the difference between a top of the range NTN bearing and a mediocre ebay no name bearing. The results show that bottom brackets which have an element of structural linkage between the drive and non-drive sides (one piece/threaded etc) perform much better than those which are multi piece.

The high torque and low RPM of pedaling causes high Hertzian contact stresses on bearing surfaces which cause friction levels to change over time. Those bottom brackets which have used ceramic bearings, start off with fairly low levels of friction but over time their friction increases dramatically. The super hard ceramic balls grind a track into the comparatively soft bearing races causing friction to increase. This would be analogous to trying to drive a locomotive train on a road, the wheels would cut grooves into the road surface due to the huge difference in surface hardness.

Bottom Bracket Stiffness

A Hambini BB is a one piece bottom bracket. It actively contributes to the stiffness of the bike’s pedaling platform. Threaded and multi piece bottom brackets have an element of play in their design so they do not contribute anywhere near a comparative level of stiffness. Reviewers of Hambini BB’s often comment on their feeling of improved stiffness, this is due to them being one piece and undergoing a proprietary heat treatment process. This makes them stronger and stiffer. This is a difference the end user cannot see – but they can feel.


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Additional information

Crankset Type






35 reviews for Hambini Racing BB386EVO Bottom Bracket Shimano Crankset (Black)

  1. BB927

    The upgrade from FSA PF30 cups to this is so noticeable, it feels like a different bike. My crank hardly used to spin on the old BB, on this it spins like butter. Hambini is super helpful. I will be honest, I was expecting some psychotic maniac after I watched the roasting from his Youtube videos but far from it. Polite and friendly emails. Super helpful. I would recommend in a flash.

  2. Stan

    Get the best and give the rest the Hambini finger! Precision made candy for your ride. NTN Super Precision feel as smooth as any top ceramic.

  3. John C.

  4. Ognen

    Thank you Hambini!
    This is my second Hambini bottom bracket that I have bought, the first one being PF30 to Shimano Classic, years ago – still running perfect.
    After I installed the BB386EVO to Shimano Racing Edition and tested it, I can only say a HUGE THANK YOU HAMBINI!

    My search for the best BB has been fulfilled.

  5. Dave

    Very happy with my bottom bracket and the service received from Hambini. Installed the bracket on the weekend without issue. My bike rides super smooth. Who knew one part could make such a difference on a bike!

  6. Richard K.

    I recieved my BB very quickly after placing the order even in the middle of the COVID-19 lockdown.

    Once you have it in your hands you can see the finish is very high quality and it looks very robust.

    My local bike shop fitted the BB after watching the Hambini fitting video and said it was very straight forward and went in with no issues.

    To ride, the BB spins smoothly and is solid, no creaks of any kind. I switched from a SRAM Force groupset to Shimano GRX, paired with this BB it is definately supperia.

    I’m a convert and will always go with a Hambini BB in future bikes. You get what you pay for, a quality product.

  7. Derek Ody

    A masterclass in engineering, the reduction in friction is ridiculous.

  8. Steve Ashton

    Just brilliant as usual.

  9. Chi

    Just as advertised! Easy installation. Made bottom bracket area extremely stiff and creak free. Use on Orbea Urdu with Shimano dura ace crank

  10. Trevor

    The gold standard of craftsmanship and quality. The smoothest bearings I have ever seen. Crank spins EFFORTLESSLY for DAYS. worth every penny.

  11. Benjamin Grass

    Great prompt service. Finally fixed the creaking on my Open, which occurred even with thread-together BB.

  12. Matthew Hughes

    Excellent service, from my initial enquiry Hambini responded very quickly with the advice and guidance needed. Thank you.

  13. Sean F.

  14. steve howlett

    Couldn’t be happier.i fitted this to a chinese carbon frame and expected some issues.fitted in about 10 minutes and haven’t had any problems at all..

  15. Jeffrey G.

    Quite simply, this is the best bottom bracket on the market. This is my second Hambini bottom bracket and they work flawlessly. If you’re looking for precision in your drivetrain, squeezing out every watt possible and ensuring against and creaking, this is the product for you.

  16. Kenneth K.

    A good one piece bottom bracket! No cracking and fits perfectly. All the positive reviews say more than words.

  17. Simon H.

    Shipped very quickly, fitting instructions were perfect (video). Spot on fit in an Open UP. Thanks Hambini!

  18. Mark Libby

    Easy installation. Works perfectly.

  19. César Saura

    Hambini bottom brackets are the best I have ever had. Light, stiff and really well machined! They perform exactly as they should!

  20. Christopher M.

    Once available, extremely fast delivery. Found everything I needed for installation online, as it should be but rather seldom is the case with most manufacturers from the bicycle industry. After first few rides the difference is noticeable between Hambini BB and my old one. Works quietly and effectively. What’s more to wish for?!

  21. Anthony C.

    Top quality product shipped quickly. Excellent customer service too. If I had a bike completely built to Hambini quality I would be a very happy man.

  22. Parvez A.

    1st class bottom bracket and bearings as expected, thank you Hambini for all your help and advice!

  23. Luc B.

    Excellent. Performance is high and it solves many problems at once.


    Hambini couldn’t have been more helpful. The enginering of this product is faultless. Very happy ?

  25. Matt Brill

  26. David P.



    The Hambini bottom bracket is beautifully crafted and slid perfectly into my Time Scylon bottom bracket shell.

  28. Ben H.

    Quality product shipped with the bonus extra pieces needed for home-mechanic installation. Problem-free installation referring to Hambini’s video. New 12 speed Dura Ace crankset spins like a dream!

  29. Michiel

  30. David T.

    Installed without fuss. Nice tight tolerances but functions smoothly. Looking forward to many miles together.

  31. James Y.

    Was promptly packed and shipped, product appears to be really well made and can’t wait to install and try out

  32. Charles Philippe

  33. Emils R.

    Excellent piece of part! Good job. Thank you!

  34. Lars C.

  35. Fowaz Ikram

    Finally got my frame (after 6 months of waiting) to get this installed and the bike built.

    Installation: Although it is not convention, but I had this BB installed in a Ti gravel frame. Metal-to-Metal interface was not the best experience for installation as this BB has extremely tight tolerances. The adaptors and the BB tool supplied did break. We manage to get the BB in but the the last 1mm was a no go….I have been told that this BB will not come out unless a custom jig is used to hold the BB shell. Hopefully I will not need to get it out.

    Performance: This BB is “the bees knees” (as one YouTube reviewer pointed it out). I come from a threaded BBR60 on a steel frame….so this BB almost definitely stands out….the climbing feels way less effort. Acceleration is also noticeably difference. The NTN bearings are the real deal. My “ ceramic” pals were also surprised on how well the a bottom bracket feels. In my opinion this is “the bottom bracket for heavier rider” especially one who has to climb 10-20% grade gravel hills from time to time.

    Concerns: None – The only major concern would galvanic corrosion due to Ti-Al interface on a long term.

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Q & A

Will This work with TIME Scylon 2022 frame with mechanial internal cabling? HBE asked on 16 April 2022

It should do, I've got one! You might need to do a spot of light filing but that's about it.

admin answered on 18 April 2022 store manager
(0) (0)
Should I face the BB receiver / frame before I install the 386EVO BB on an Open Min.D frame? Rick Tandy asked on 19 January 2022

It's recommended that you do. Open frames are of notoriously poor quality.

admin answered on 21 January 2022 store manager
(0) (0)

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