In addition to the teaser released a few weeks ago, Jamis just put out this newest video with more technical information on the final build. The bike is due to be officially released leading up to Eurobike, with the bike coming January 2014.


  1. So, basically, they’ve discovered a bunch of things that a lot of other companies have already been doing for a few years. It looks like a really sweet bike and all, but “we discovered that a larger seat tube transfers power better than a smaller one.” and the stuff about the tapered head tube and steerer tube…yeah, thanks, we know that already, it’s what “the industry” has been telling us for at least 5 years.

  2. BB86.5 is the Shimano standard used by Scott, Giant, and others. And the post mount brake is the Shimano TT brake. The trek BB standard is BB90 and its existence is pointless being that Shimano had already made BB86.5 available to everyone.

    Not really sure how you came to the conclusion that this is copying Trek. I have no idea how anyone would prefer a Madone over this bike. For me it wouldn’t be close.

  3. seriously…this video is like a how-to on building a standard contemporary carbon frame. “We were able to increase ride quality with the seatstays…” Is that so? Pretty wild stuff. They’ve sure got a lot of numbers. Well, I do to: He said “Ride Quality” 12 times, which is a whopping 71% increase from the number of times he said “Power Transfer.”

  4. There’s no need to be so negative and offtopic, folks. A new Xenith from Jamis is interesting in particular because they are one of the smallest players in the ultralight category, and this is a fresh new version.

    But since that’s the tone, I’ll pile on. These stupid new bottom bracket and headset “standards” are popping up faster than zits on pubescent child’s face. The ship has sailed on reining them in. I don’t bother to track them all, or even muster the effort to complain much about it anymore.

    That said, I can’t abide this BB86.5 nonsense. If it’s the same as BB86, that’s what you should call it. The fact that it might get confused with BB386EVO is not Shimano’s fault. If it’s not the BB86 standard, then just ROUND UP and call it BB87 FFS! Obviously, that stands for Fast Forward Spindle…

  5. I’d rather see a company actually do the research to find out what works best for their frame rather than just adopt what is being done by some in the industry. Copying parts off other’s bikes doesn’t necessarily provide the solution you were looking for. If Jamis did the research they say they did–and there’s no evidence to think otherwise–good for them.

What do you think?