Hambini BB386EVO Bottom Bracket 30mm BB30 Long Axle Crankset

(4 customer reviews)

£155.00 (£186.00 inc VAT)

This bottom bracket is designed to interface a 30mm Crankset (minimum 90.5mm DBCA) 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-Extended BB30 (Long Axle)-Classic Category:


This bottom bracket is designed to interface a 30mm Crankset (minimum 90.5mm DBCA) 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
  • 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

BB30 Long Axle





4 reviews for Hambini BB386EVO Bottom Bracket 30mm BB30 Long Axle Crankset

  1. James Mac

    I am a retired machinist and I can see the level of detail and the quality of work. It is well machined and the attention in areas where most would neglect is very visible to the trained eye. I am tempted to buy another one just to put above my fireplace.

  2. Bike Beast

    I recently purchased a BB386EVO bottom bracket and M12 press and Hambini was great with followup and the detail of the BB is incredible. I have to thank him he went over and above to help me out even when I had to remove the BB shell. Only thing left for me to do now is get the bearing removal tool and some day I may need new bearings bc I ride 30,000 miles a year in all kinds of weather. Hambini does great work I give him the highest recommendation.

  3. Mace847

    I can’t recommend Hambini highly enough. He was recommended to me by a couple of guys at my bike club. He helped me with a few issues I had and recommended this bottom bracket to me. He even labelled up all of the parts to make it totally fool proof. Fitting was really easy despite me shitting myself before. Once fitted this is a great match to my Rotor cranks. It is so much stiffer and smooth. It feels like power is going down in buckets. If you are in any doubt over whether these bottom brackets are a myth, don’t be. The finish and engineering are as good as all of the other reviews on here and his service is SECOND TO NONE.

  4. Andrew W.

    Well designed, well made, prompt dispatch and great support videos to guide you in correct fitting. A real peace of mind component to guarantee no creaks, noExcessive bottom bracket drag or failure when you’re on a long ride. One of the best upgrades I’ve made on the bike.

Add a review

Your email address will not be published.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