Testing the Bushnell Eccentric Bottom Bracket

Bushnell EBB

A couple days ago I got my Bushnell EBB shell in the mail, a big upgrade from my previous shell which was only secured by the four set screws on the BB shell’s underside. My Bushnell expands when you turn the 4-mm bolt clockwise – making for a really snug and slip-free fit.

I mainly got this EBB ’cause I grew tired of my two front set screws stripping after repeatedly chasing/retapping the threads. With only two days riding the new shell I’ve noticed my bottom bracket area has become noticeably stiffer and more responsive; no creaks, no noise-just the humming of my tires. We’ll see how it goes over the next couple weeks but so far I’m really happy with the purchase. Anyone else riding this EBB or have an EBB setup?


  • Kurt

    Hey there_

    How has the Bushnell EBB worked for you over this last year+? Any issues? Would you recommend it as a solid option? Also, has it kept the BB casing pretty clean (dirt free, dry, etc)?

    I have the 2 set screws as well and I’m tired of the creaking. I’ve been researching the Bushnell and Carver EBB’s and am trying to figure out which would be best – if either.

    Thanks for any input you have.


    • Hey Kurt,

      Thanks for reminding me I never posted a follow up to this! I’m a huge fan of the Bushnell EBB; I’ve had zero problems with creaking, slipping or adjusting it. Though, like most EBBs, it’ll take a little whack to loosen it up after it’s been set for a while. I’d definitely recommend it. Set screws EBBs suck.


      • Kurt

        Awesome. Thanks for the quick reply!

        Real quick, some people have mentioned that the Bushnell needs a lot of pampering: constant maintenance including cleaning, lots of copperslip for creaking, etc. Any problems there? It sure looks like a bunch of dirt/water/grime could get inside with those holes. Thoughts?

        Thanks again for the response!


        • Nathan

          Hoping for a little follow up on this, too. I ride a Cannondale 29er SingleSpeed and it’s quiet now, but I can tell that’s not gonna last long. I’m shopping replacements.

          • Hey Nathan,

            I’ll do a little follow-up post on this EBB. Since the original post over a 1 1/2 years ago, I’ve yet to have to adjust it. No play, no creaking and no shifting which is great! Huge fan and would highly recommend it.