Kogel Bearings announced a host of new options to fit the latest threaded bottom bracket standard, T47. This gives a ceramic bearing option to some of the latest Trek models, and just about any crankset you’d want to run – continuing with their rule of “Any crank, any frame, no adapters”.

Kogel Bearings T47 threaded ceramic bottom brackets

Kogel is keeping up with the proliferation of new bottom bracket styles and standards, officially releasing options for T47. Offering the ease of threaded installation with the option for large bearings and spindle sizes, this new-ish option has been adopted by Trek on select bikes such as the new Domane. Note that Kogel cited Trek specifically as the brand that finally prompted them to dive in to T47.

It’s also worth noting that Trek doesn’t quite follow the official T47 standardized bottom bracket shell width of 86.5mm, instead opting for an 85.5mm shell. Kogel says that his falls within the tolerance range, and is fully compatible with their bottom brackets.

All Kogel T47 threaded bottom brackets use precision ceramic bearings, with two options for sealing. The Road version maximizes efficiency, while the Cross version opts for more durable weather sealing – for use in gravel, cyclocross, or frequent riding in bad conditions.

Options are made for cranks including Shimano, SRAM Dub, Rotor, Praxis, Infocrank, and more. All are available now for $199.99.

Kogel.cc

22 COMMENTS

  1. > Kogel says that his falls within the tolerance range

    How can a 85.5 mm shell width be within spec? I’ve tried to find the T47 drawings online, but I haven’t been able to find. them. (If T47 is an open standard, where am I supposed to get the specs from?)

  2. 1mm falls within the adjustment range of most crank sets.

    Trek made a conscious decision to spec their frames at less than the standard width in order to create a larger contact area for the installation tools. the super thin flanges on T47 internal bottom brackets did not work for their assembly line.

  3. > 1mm falls within the adjustment range of most crank sets.

    How do you know? Are you an engineer for Shimano or SRAM? Do you have access to the design drawings for a large number of cranksets? 1 mm is an issue for SRAM GXP.

    • SRAM is abandoning GXP. Their new AXS Red is *only* available in GXP as OEM to Trek (for BB90 Emondas and Madones) with *zero* aftermarket availability. It’s now DUB or die, time to move on.

  4. “Kogel says that his falls within the tolerance range”

    Kogel’s assertion is incorrect. T47 specifies 5 different shell widths, all with a tolerance of +- 0.5 mm. The one that would apply to this is 86.5 mm +- 0.5 mm, which makes Trek’s and Kogel’s 85.5 mm out of tolerance for T47.

  5. Kogel’s bearings DO NOT last, and they don’t honor their warranty at all. STAY AWAY FROM EVERYTHING KOGEL! I had my wheel bearing fail within six months. After that, Kogel serviced these bearings and sent them back but there was still play according to my bike shop. I then had a bottom bracket fail, and they replaced the bearings but wouldn’t replace the cups, but Kogel refused. So now I have a brand new bottom bracket bearings and no cup to put them in. The bearings in the lower instagram pulley failed as well, and they refused to replace that within the two year warranty too. I’m pretty sure it’s absolutely illegal to NOT honor the stated warranty, but that’s what Kogel is doing. Again, STAY AWAY FROM KOGEL

  6. “Kogel says that his falls within the tolerance range”

    Kogel’s assertion is incorrect. T47 specifies 5 different shell widths, all with a tolerance of +- 0.5 mm. The one that would apply to this is 86.5 mm +- 0.5 mm, which makes Trek’s and Kogel’s 85.5 mm out of tolerance for T47.

  7. 86.5mm bb width = press fit bearings

    85.5mm bb width = thread in bearings as you need extra flange width to tighten the BB.

    This is all per Sram’s spec (can be found on their service page) and allows for actual bearing width measurement to be the same between press fit and thread fit.

    • What does SRAM have to do with this? Please provide a link to the page you mentioned. The 85.5 mm modification to T47 seems to be all Trek’s doing.

  8. I’ve had nothing short of fantastic results and praise for Kogel products and their knowledgeable staff. I (now) have three of my bikes Kogel Equipped. Their CX sealed pulleys performed beautifully (podiumed) on a CX course entirely on the beach if Folsom Lake CA. Add in six more podiums for this cross season so far. Big shout out of appreciation to Kogel, Ben and the entire staff #kogelbearings

      • Nah. He literally said their pulleys did some kind of performance (I’m guessing interpretive dance) and climbed onto the podium seven times so far this year.

        Me? I’ve never personally met pulleys with anything like those abilities. Most of the ones I know just kinda sit there in derailleur cages and spin, because it’s a frickin pulley and has about zero likelihood of affecting your ability to win a race.

COMMENT HERE: (For best results, log in through Wordpress or your social media account. Anonymous/fake email comments may be unapproved or deleted. ALL first-time commenter's posts are held for moderation. Check our Comment Policy for full details.)

This site uses Akismet to reduce spam. Learn how your comment data is processed.