Ibis introduces the Mojo HDR

27.5 News

The Frame

The HDR frame is slightly lighter than the HD, around .3 -.4 lb (depending on size and color), yet is stronger and of equal stiffness. We’ve employed a new, more precise molding technique similar to that used in the Mojo SL-R to get the weight down.

By shifting around our linkage locations, we’ve managed to add ISCG 05 chainguide mounting functionality and dramatically increased the front derailleur compatibility across both the 2X and 3X spectrum. We’ve also increased clearance for the new 11 speed cogsets.

With some other tweaks to the frame, we’ve made the frame compatible with Fox’s new lighter weight XV air cans on the CTD shocks. We’ve also added clearance for their new Float X piggy back shock.


The HDR is an extremely versatile bike. It can be setup a number of different ways, for a number of different types of riding. You can easily change front or rear travel and change wheel size to dial in the right ride for you.

Note that the HDR and the HDR 650b share the same frame. We change the stroke and length of the shock, along with its location on the frame, to give two very different setups with unique ride characteristics.

Our stock 650b setup has 130mm travel. By swapping out the “limbo chips” and changing the shock, you can easily change the bike to a 160mm travel bike for 26″ wheels. You can also run the HDR 160mm setup with 650b wheels. You just need a travel limiter on the shock (otherwise the tire will rub the seat tube), reducing it to 150mm of rear wheel travel. That version is called the HDR and you can see it here.

Here is a picture of the limbo chips:


The HDR features a mixed tapered headset with a 1.5″ lower and a 1.125″ upper. The 1.5″ lower provides an exceptionally rigid front end platform. Combined with the through axle fork and our very stiff front end layup, you’ll be amazed at the precision found in the front end, particularly when pushing hard. The HD is also compatible with the King InSet 3 headset.

XX1 Clearance

With the popularity of the 11 speed cogsets on the rise, we’ve increased the clearance at the drive side dropout to allow for most hub/cassette combinations. We like the 11 speed drivetrains when utilized with a 32 or 34 cog, they nicely match the suspension kinematics that way.

About the author: Brian Mullin

Brian likes to push the limits in all the sports he obsesses in, whether it's mountain biking, whitewater kayaking, skiing, or sport climbing. He takes those same strengths and a good dose of insanity to his reviewing and writing on mountain biking products, creating technical, in-depth articles. Whenever he's not on the bike, he might be found watching MotoGP racing, otherwise look for him out on the trail.

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  • Izzy says:

    The 650B dw-link bike of my dreams! This just nudged the SC Solo from the top spot of my dream bikes list.
    I’ve been wondering when Ibis would come out with a real 650B bike. Better shock clearance, ISCG mounts (removable!), great geo, fantastic colorways… what’s not to like? Oh wait, I wish it were lighter. Sub-6lbs would make it absolutely perfect.

    • MIchael Gamet says:

      it will be a “real” 650b once the new rear triangle gets released.
      for now they use a travel limiter on the shock.

  • Izzy says:

    I forgot to ask, is the 2.35″ tire limit based on which 2.35″ tire? Or is it actually 59.69 mm?

    • Brian Mullin says:

      Until I try and fit a tire in there I can’t answer the question. The Schwalbe HD SG 2.35 and NN 2.35, and the about to be released Conti TK 2.4 are huge tires (the latter won’t even fit in the current HD).

      • Hans Heim says:

        The Hans Dampf fits the swing arm and the cad model but is close to the seat tube at full bottom out and might buzz the seat tube in hard bottom out. We will make it clear even in the harsh bottom out situation with a slight change to the shock chips.

        • Brian Mullin says:

          Straight from the horses mouth in regards to one of the bigger tires on the market currently (thks Hans).

          I have updated the article: The HDR can pretty much run any size 26-inch tire, but the HDR 650b is constrained to a maximum of most 2.35-inch tires, so we’ll have to see how the fatter Enduro type tires fit, and it appears that Ibis might make some slight modifications for that accommodation.

  • roger says:

    “but the HDR 650b is constrained to a maximum of certain 2.35-inch tires” “it will require the rear shock to have travel a limiter to keep the rear tire from hitting the seat tube.”

    No thanks! I’ll stick with Santa Cruz! If you want a 650B, get a 650B! The NOMADC still set the standard on ALL-MOUNTAIN BIKE category!

  • roger says:

    I’m just a bit confused how IBIS is marketing this bike…26 and 650B maybe? They already have a dedicated 650B platform. Why even bother making a 26 if your just gonna steal the spotlight from it? The HD is a good bike, don’t mess with it. Make use the ISG tabs as you intended!

  • paul says:

    roger: some people want to own two wheelsets and have the option based on what they’re feeling like? instead of owning a traditional HD and a separate wagon wheel bike? makes sense to me anyway, just wish i had 5 grand lying around.

  • sergio says:

    Hi Brian, is there legitimate 26er that folks are successfully converting in a hardtail production bike out there?

  • brian howard says:


  • James R says:

    I see a real divergence here with how Ibis is treating R&D compared to companies like Norco, Intense or Santa Cruz. Ibis releasing this as a 650b bike is akin to a joke by limiting the travel to keep the bottom bracket height down. Then they limit tire sizes on the rear for 650b because this is a rear triangle for 26 inch bike. Two years ago this may have been ok for a B-grade company. But to put out a 130 millimeter travel hack for the HD is an insult to Ibis brand when there are so many legitimate efforts out there in the 650b landscape. What is the point to this conversion when you end up with limited travel on an HD?? Old customers were doing it so they could extend the life of their purchase with a 160 mm travel 650b converted Mojo HD. Marketing little tips and chips is not something an Ibis should be doing. They should be investing real money in their effort and come with some timely and fresh ideas.

    But the fanbois will be pleased. Because they have their blinders on by definition. A+ marketing, C- engineering and F for brand building.

  • urbiksux says:

    It is not mutually exclusive for the HDR and the Solo to both be great bikes. I laud the market expansion of this style of doitall bike. Can’t wait to demo

  • Nighthawk says:

    Forget it. Ibis designed the HDR to be convertable both ways yet they are coming out with an updated rear triangle later in the year? I would think it’s not that hard to add some clearance in the rear triangle. I just coverted my 2012 Remedy 9.8 Carbon with Reynolds 650B Carbon wheels and I have zero clearance issues. Even on the rockiest drops I still do not bottom out. It’s mainly because the full floater isolates the movement of the rear stay so it will not rub. Check out my one of kind build below. Cheers :)


  • DigitalHippie says:

    Unbelievably I scored a pre-release gig with Ibis and have been rolling around on the new Ibis Mojo HDR the last few weeks, running it both as a 26″ and 650b.

    It’s been great fun and a real eye opener for me as I’ve loved my 26″ Mojo HD to bits. At the end of several weeks of back to back testing I’m going with the 650b build, it’s just insanely dialed.

    I’m keeping a blog on all things Mojo HDR at http://digitalhippie.net/ibis-mojo-hdr/

    • roger says:

      Which trails did you do the test rides on?

      Did you test ride the 26 and 650B mode on the same trails?

      Did you use the same tire brand and pattern on 26 and 650B mode?

      What was the gearing, shock, fork, and stem setup you used on the 26 and 650B mode during your test ride?

  • dude says:

    My next bike, 650b 130mm HDR…my original Mojo C is still great, 6 years down the road…but this bike is what ive been waiting on

  • plume says:

    Nighthawk – Too bad DRCV is TERRIBLE. I do like the full floater aspect of their designs… More to the point – this bike looks incredible. DW works and this is exactly what was missing from the IBIS camp. Kudos. Very likely my next bike if the funds are available! VPP? Ok!

  • Guy says:

    I could not have described this better than James R. I’m ashamed of this effort.

  • Eric says:

    It seems like there would be additional weight added to the bike for the option of switching from 26 inch to 650b. I don’t know, seems like an unnecessary add on for those who know what they want. I’ve never really been big on those sorts of options, it seems finicky and like I probably wouldn’t use it. I enjoy dedicated designs.

  • Antonio Chua says:

    I admire the hdr 650 which is convertible to either 26 or 27.5 wheels, but the big brother hd mojo 160 needs also a conversion kit as promise by Scot and Hans, hopefully earlier than year end.

  • Rotor says:

    That is drop dead gorgeous.

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