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Developed for the most demanding enduro courses in the world, the Ibis Mojo HD4 Carbon XO1 Eagle Complete Mountain Bike marks a stark departure from the previous Mojo HD3 with its long, slack geometry paired with a piggyback shock that's tuned with greater progression to keep you from bottoming out on bigger hits. This reconfigured geometry and progressive shock tune is driven by the needs of the Ibis Enduro Race Team competing on the world's most demanding enduro courses, as opposed to the previous Mojo HD3, which focused more on agility and playfulness over all-out speed.
Delving into the Mojo HD4's revised geometry, you'll find it's not just a bit longer, it's actually much longer than before, with the bike's reach being one size longer than the Mojo HD3 for medium through extra-large sizes. By growing considerably longer in reach, the Mojo HD4 gives riders a roomier cockpit, eliminating the need to size up many riders found with the HD3. These longer figures translate to the HD4's wheelbase as well, which has grown considerably to offer higher levels of confidence when you're pushing the bike to the absolute limit on blistering-fast downhills.
Not only is the Mojo HD4 much longer than the previous version, but it's also much slacker for greater stability when you're plunging into formidable downhill sections. Ibis played around with different head tube angles until they settled on 64.9-degrees, which they claim offers greater downhill stability and higher lean angles before it loses traction. The second part is especially important for riding on trails and race courses with tricky off-camber sections, as the slacker head tube angle keeps the bike planted to the trail, instead of teetering off the edge.
Looking to the Mojo HD4's suspension, it's no surprise that Ibis retains the praised kinematics of the DW-Link platform, namely its ability to pedal efficiently with anti-squat characteristics paired with a linear feel (until it ramps up at the end) for a smooth and planted ride over rough stretches of trail. Benefiting from continuous design advances, the Mojo HD4's upper and lower links are 30 and 40 percent stiffer, making it all the more competent over rugged trails. Travel increases by the tiniest bit, from the previous 150 to 153 millimeters. However, what's more important is the progressive shock tune of the included Fox Float DPX2, which ramps up considerably to prevent it from bottoming out across bigger hits and nastier rock gardens.
We'd be remiss to forget mentioning the meticulous engineered carbon frame of the Mojo HD4, which benefits from Ibis' one-piece carbon lay-up, resulting in a lighter and stronger frame with exceptional stiffness. Each frame is optimized to fit longer dropper posts than before, with small frames accepting 150-millimeter droppers, while the medium to extra-large frames work with 170-millimeter droppers. As you'd expect from a bike of this caliber, both internal cable and dropper routing clean up its overall aesthetic.
For this particular build, the XO1 Eagle drivetrain shifts crisply across its wide range 10 to 50-tooth cassette, giving you plentiful range for demanding rides across alpine terrain. Ibis provides their 738 Very Wide Aluminum Asymmetric wheels, which feature a 34-millimeter internal width. These stout wheels provide support for the 2.6-inch Maxxis DHF Wide Trail Tires, so you'll reap the benefits of increased grip and better bump compliance at lower pressures. Another notable feature is the Fox Float 36 RC2 fork, which is one of the stiffest forks in its class, thanks to its 36-millimeter stanchions preventing torsional flex from bucking you silly across rugged trails.
- Purebred enduro race bike with longer, slacker geometry
- Longer reach and wheelbase, so you don't have to size up
- 64.9-degree head tube angle for composure on steep downhills
- 6in of DW-Link travel boasts anti-squat efficiency and linear feel
- Fox Float DPX2 shock ramps up at end stroke to avoid bottoming out
- Refined carbon frame is lightweight, strong, and impressively stiff
- Eagle XO1 12-speed drivetrain with 10 to 50-tooth wide range cassette
- Ibis 738 Very Wide Aluminum Asymmetric wheels with 2.6in Maxxis tires
- Item #IBS003Z
- Q & A
This Thing Rips!
- Familiarity: I've put it through the wringer
I have this build but with the carbon 742 rims and absolutely love it! It has raised my game considerably due to it's confidence inspiring ride characteristics. I ride it mostly in Sedona where it's super chunky and this thing just stays planted no matter how sketchy the terrain gets. The DW suspension lives up to it's hype too; climbs very well for a mid travel bike... I NEVER lock out the suspension when climbing.
- Familiarity: I've put it through the wringer
This bike is a beast. Lets make a list.
Pedalling perfomance: I was skeptical. Its a big bike and super slack. But I was blown away with how well this climbs. The DW link really keeps the bike in an upright climbing position without ever having to lockout the suspension.
Descending: This thing will make Moab chunky stuff seem like a smooth sidewalk. Bring on your scariest trails.
This is my first Ibis bike, and I think they have just made a customer for life.