Hambini Racing T47i T47-86.5 Bottom Bracket Shimano Crankset (Trek)
£268.00 Ex. VAT
This bottom bracket is designed to interface a Shimano 24mm Hollowtech 2 Crankset with a bike frame that uses a T47 Bottom Bracket (86.5mm wide). This is often called Threadfit or T47i. This will also fit cranksets from the likes of Rotor, FSA, Magene and others who use a 24mm axle with 90.5mm DBCA – this is often called Shimano compatible.
Out of stock
This bottom bracket is designed to interface a Shimano 24mm Hollowtech 2 Crankset with a bike frame that uses a T47 Bottom Bracket (86.5mm wide). This is often called threadfit or T47i and a variant of this is used on Trek bikes.
- T47 x 86.5 Threaded. 47×1.0mm
- Will work with TREK T47i bikes, these have an 85.5mm wide shell
- Drive side has a Left Hand Thread, Non Drive Side has a Right Handed Thread
- Designed for Shimano Hollowtech 2 Axles (Sora, Tiagra, 105, Ultegra, Dura Ace). This will also fit cranksets from the likes of Rotor, FSA, Magene and others who use a 24mm axle with 90.5mm DBCA – this is often called Shimano 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
- This bottom bracket has been designed to offer easy servicing, it is not a throw away item, it has been designed to allow easy changing of bearings which are a standard part
- Non contacting Seals
- Tool Requirements, these are shown on the drawing in the picture gallery
- 52mm Outside Diameter
- 12 Notches
- 51.7mm PCD (Pitch Circle Diameter) R25.85mm
- 3.5mm notch diameter
- A suitable tool is available here
19 reviews for Hambini Racing T47i T47-86.5 Bottom Bracket Shimano Crankset (Trek)
Q & A
Yes it does. Thanks Hambini
It can be ordered with fully contact sealed bearings and that will provide the maximum sealing. Some people for gravel use do specify these. It is a no cost option.
No Hambini Bottom Bracket has ever been available with ceramic bearings. Ceramic bearings are not suitable for this application, the spindle speeds are not fast enough and the road vibration would cause them to pit the races.
Yes it will
Robert McKee –
Great piece of hardware, I gave it to my custom frame builder and he was blown away by the quality and precision of the bottom bracket. I have two with BSA threading on my other bikes and they preform flawlessly
Jim Langley –
So I bought this after watching several hours of a loud mouthed 5 YO on YouTube. I am totally satisfied with my purchase. Once you pick this up and use the fitting tool that is also listed you’ll realize what precision engineering is. This is a different league. I have used so called top of the range parts on my bike over the years and they have been of varying quality, this blows them into the weeds. He is loud and foul mouthed but it’s for show. Pre purchase sales and after sales are easily the best – fast, courteous and technically articulate. Buy one, you won’t be regret it.
Pavel Vitous –
Fitted like charm (Trek Emonda). Not much to add. BB is just spectacular 🙂
Let me start this review by saying I previously had a Chris King in the bike. That has since been binned and replaced with this. I bought this and the fitting adaptor together. Everything arrived quickly and the experience pre sales, during sales and after sales has been the best I have ever come across.
The bottom bracket fitted with ease, the internal sleeve that aligns it is very clever, I was amazed how much play there was with the Chris King versus the Hambini. There is zero backlash when the center sleeve engages. I had originally intended to take this to a bike shop to be fitted but the tooling and design make this so easy that I did it at home.
Out on the bike, it has been without fault, even under extreme loads.
Before purchasing, I was initially skeptical as to whether buying a bottom bracket from a lunatic on YT was a good idea. In hindsight, I should have done it sooner.
Martin Bradwell –
It only took a couple of minutes to fit. The center sleeve design that goes into the other side is very clever. It was surprising how much slack there was in plain threads.
Don’t waste your time with a bike shop. Save yourself some money, buy the Hambini Tool for this BB and wrench it in.
Arrived in the US in about a week. I am totally satisfied with my purchase, everything is extremely slick. This is how it should be.
Thomas B. –
Haven’t installed it yet but just holding it shows the craftsmanship and precision that goes into making this bottom bracket. Looking forward to the install.
JS Park –
I don’t usually bother leaving reviews but this product is an exception. I initially had some reservations about buying a product from a self-proclaimed 5 year old. However, upon emailing him I found him to be courteous, polite and his technical knowledge is another level.
The bottom bracket came in a plain box. it was well packed and arrived with no damage. The fitting was without issue. I also bought the Hambini Tool T6806 and this fits the BB perfectly. The center section is used for aligning between sides and is not something I have seen in any other design.
For performance, I cannot fault it. The feel is noticeably more direct than the OEM Praxis unit that it replaced. It feels like there is less drag as well. A 5 star product, backed by 5 star service and a 5 year old to go with it.
So much smoother compared to the old BB. Love it!
John Buchan –
I cannot believe how good this spins. It is so smooth and easy to pedal over my previous BB. The machining is so good too. Worth every penny. Thanks Hambini 🙂 ps: For being designed by a 5 year old hair dresser banger, I am very impressed.
Rui M. –
Great product and great costumer service as Hambini is always available to answer your questions via email.
Dave Sarcevic –
Thank you, Hambini. I am extremely satisfied with my BB. The only problem I had was removing my older Praxis BB, which I didn’t realize my Park Tool T-47 removal tool wouldn’t work on. Installation was very easy and sensical. I rode a nonstop 500 mile ride days after installation and and noticed no problems. I actually didn’t have to think about it. Which is a sign of a high quality part where it is doing what it was designed for. I appreciate your videos along with your no holds barred honesty and take no BULLSHIT attitude. I highly respect your professional opinion and now your high quality BB!
Really nice piece of kit. I thought it was silly expensive and then it came. Nope, high end machining just costs this much or more…it is really a great BB.
Lars Wittrock –
Thomas M. –
Fantastically made BB. Thankfully my Emonda SLR frame is well made, so took the BB without issue. I put a single wrap of teflon tape on the threads before inserting, as there have been problems with t47i BB’s coming loose in Trek frames (not a Hambini issue – this is a recent recommendation from Trek itself regarding BBs).
The Hambini BB spins like a dream, totally different league to the Praxis that it has replaced. Honestly, if I had to choose between an expensive wheelset or a Hambini BB, I would pick the latter. It’s only once you’ve experienced it that you can know. Just like any top class hairdresser.
Brian C. –
Fast BB and great service.
Kerry P –
It’s difficult to see the difference from the pictures as it looks like a 5 YO took them haha. But pick one up, fit it, ride it and then you’ll know why his bottom brackets have such a good reputation.
Julius K. –
I had a few queries and discussed these with Hambini over email. I Ordered it on the Thursday, and it arrived at my door on Monday afternoon in southern California.
The service from here is out of this world. Very slick and professional. I cannot fault it. Well done Hambini and his hairdresser
This is a bottom bracket…the likes of which can only be found here! Precise and built to last.
This replaced the Praxis Works unit on my 2022 Trek Checkpoint SL. Had some questions before purchasing which Hambini answered quickly, courteously and adequately. The BB is exquisite, beautifully made and went together in my frame very easily with the Hambini tool. Because I mostly ride gravel on this bike, I opted for fully sealed bearings, great that Hambini offers this at no extra cost. Very happy so far after about 100km, have to put in some more but I’m expecting nothing but buttery smooth pedalling :). Easily the best purchase I’ve made in a long while!