Ibis Mojo HDR 650b X01 (2013)

The Mojo HDR 650b is the fraternal twin brother of the Mojo HDR and the younger brother of the Mojo HD, taking the HDs technology and versatility a few steps further. As you can tell by the name, the HDR 650b features that third wheel size that all the kids are talking about these days: 650b / 27.5".
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.
One of the biggest and perhaps least visible changes comes from the completely redesigned swingarm. It has been retooled to give generous clearance for 650b tires, and also has cutouts for the new 11 speed drivetrains. And while the clearance number goes up, bb height goes down to a berm-hugging 13.5"
By shifting around our linkage locations and completely redesigning the swingarm, 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 LV air cans on the CTD shocks.
GEOMETRY
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. That version is called the HDR and you can see it here.
Like with its predecessor the Mojo HD, it's possible to set up your HDR 650b with travel greater than 130mm. You need to travel limit the shock in order to do this. If you configure an HDR this way you can get about 140mm or 145mm of travel depending on tire size.
Please keep in mind that changing travel on the HD and now HDR is something that people have figured out on their own, this has not been an Ibis spec shock set up. Changing the travel or eye to eye on your shock needs to be done carefully or you can damage your frame. We are currently working on an Ibis approved shock spec for those wishing to run their HDR in longer travel 650b mode. We will update as info becomes available.
While we're on the subjects of doing it yourself and more travel, the Fox Float 34 forks that come stock on our 650b build kits have 140mm of travel and can be easily increased to 150mm travel with installation of a different negative spring plate (Fox part number 234-04-435).