Hambini BB386EVO Bottom Bracket Shimano Crankset

(17 customer reviews)


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 lof of manufacturers refer to this standard as BB386, without the EVO.

Out of stock

Join the waitlist to be emailed when this product becomes available

SKU: BB386EVO-Shimano-Classic 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 lof of manufacturers refer to this standard as BB386, without the EVO.

Hambini Bottom Bracket Overview

  • Aerospace Tolerances for a no slop fit
  • One Piece design aligns the bearings perfectly, reducing the likelihood of creak
  • Fitted with NTN/NSK/SKF/FAG/Koyo Bearings
  • 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

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.


A lot of support questions can be answered by visiting the support section.

Popular support topics:

Still need some help?

You can contact support on support@hambini.com or use the Contact Form

Additional information

Crankset Type






17 reviews for Hambini BB386EVO Bottom Bracket Shimano Crankset

  1. K Ballas

    I bought this for my Time bike frame. It fitted easily and has not creaked at all. The cranks spin freely. This is exceptionally well made.

  2. LeedsJim

    I am an avid viewer of Hambini’s YouTube videos and his engineering. This gives you an impression of what the man is like and despite coming across like a bumbling idiot, he is very professional when he needs to be. Service and product were both first class. Very helpful and his attention to detail is amazing. The bottom bracket is amazing. The cranks feel so free and on load there is not even a hint of creak. The only dilemma around this is the price. It is at the very top end but I would not think twice about buying another one. There is night and day difference between this and anything else on the market.

  3. Jim Saunders

    I bought this to go into a chinese open mold frame. I was a bit worried that I was going to have one that slid out but this went in and has not given me any trouble since. Very well made and customer support is the best in the industry.

  4. Ed

    I tried everything and said to Hambini that this/he is my last hope. I had three different bb’s installed, tried with dry, greased, glued ways, but creaking just got worse. I found out that frame is also very poorly made… But, then I ordered Hambini bb (which was also stolen and later found at package courier company and then delivered without one bearing adapter… Hambini sent me another adapter and i got it in just few days..). I also damaged one of high class NTN bearings when installing bb into the frame (my fault) and ordered another at Hambini (got it in 5 days and Hambini responded to my emails even on his holiday!) But finaly, i put all together and: NO CREAKING anymore! No creaking at all. I made few tests outside and on indoor trainer and there are no annoying clicks anymore! Hambini bottom brackets should be the only standard for press fit frames! Overall experience (quality, customer support, patience, solutions, advices, guides, youtube channel, etc…) is just better than perfect! Thanks to Hambini and his only solution to get rid of annoying creaking finaly!!

  5. BEM98

    This bottom bracket is a quality piece of kit. It comes in a generic brown cardboard box which doesn’t set you off with the best first impression. Once the box is opened and you see it. It is as good as everyone says it is. Very well machined, a joy to touch and super smooth. It fitted my Time bike with no issues and I was pedalling away shortly after. It is much stiffer than the original and so smooth. It’s so smooth. Technical support from Hambini is very good, he is quick, polite and courteous despite my noob type questions. Cracking youtube channel as well! Thanks Hambini

  6. Kenny Y.

    Received in one week from across the pond, very impressive response time. Had a few questions and the response time was uber quick from Hambini. I would buy anything engineered and manufactured by this crew. Thank you

  7. Kenny Y.

    Great customer service, quick response time to any questions or concerns. Uber fast shipping. I would by anything manufactured by this crew. Thank you

  8. Mario

    The BB is working great, no creaks, low friction, zero maintenance. So happy with it. Thanks Hambini, my Time Skylon is finally rounded.

  9. Hang Loose

    I’ve bought this for a Chinese frame looks good made well, just waiting to buy Hambini installing a removal kit when is it in stock.

  10. Ed

    After 50 hours and over 1500 km on indoor trainer (also constantly exceeding 1000 watts of load on this BB) still no single creak! Hambini, thanks again!;)

  11. Tomasz

    Superb quality!!!!!!! I wish that all bike parts were done with such precision!

  12. Anonymous

    Not installed yet but looks good. Package was well protected. Looking forward to trying it

  13. Ron A.

    Hambini quickly answered my questions. My order was filled the next day. The BB is beautiful, extremely well made, fits perfectly. Gets my highest recommendation!

  14. Graham W.

    Fantastic value, made superbly, delivered speedily.

  15. Khalid AL muhairi

    No comments

  16. Khalid AL muhairi

    Best quality

  17. Michael M.

    100% perfect.

Add a review

Your email address will not be published. Required fields are marked *

Q & A

There are no questions yet

Ask a question

Your question will be answered by a store representative or other customers.

Thank you for the question!


Your question has been received and will be answered soon. Please do not submit the same question again.



An error occurred when saving your question. Please report it to the website administrator. Additional information:

Add an answer

Thank you for the answer!


Your answer has been received and will be published soon. Please do not submit the same answer again.



An error occurred when saving your question. Please report it to the website administrator. Additional information: