Ibis Mojo HD4 first ride review

New 150mm enduro slayer that's a legit everyday bike, too

27.5 Enduro
Ibis Mojo HD4 Review

The well-tuned, bottomless feeling suspension means more confidence when dropping in. Photo by Otto Maddox

What is it

The much-loved enduro-slaying Ibis Mojo HD3 has gotten a makeover for 2017. Now appropriately dubbed the Mojo HD4, the just released rig is even slacker than before, now with a 64.9-degree head tube angle compared to 66.6 before. The seat tube angle also increases, landing on 74 degrees (on the HD3 it ranged from 72.6 to 73.6 depending on size). Rear travel is 150mm (technically 153mm), while 160mm is standard up front, though it’s approved for up to a 170mm fork.

Ibis Mojo HD4 Review

The Ibis Mojo HD4 takes flight with an on-sale date of June 15. Photo by Josh Sawyer and Courtesy of Ibis Cycles

“By trying a number of head angles back to back to back, with all other geometry dimensions held constant, we were able to pinpoint some desirable characteristics,” explained Ibis in PR materials released withe the new bike. “The obvious one is that with proper trail measurement, the bike’s ability to steamroll through rough terrain is greatly enhanced. Less intuitive, but borne out by testing is that reducing the head angle [compared to what some others in the industry are doing in this segment] it allows the bike to achieve higher lean angles before slipping out. This change also makes the bike more stable as the trail transitions to off-camber, meaning it’s less likely to slip out or get pushed down by the trail. On the Mojo HD4 we set the head angle at 64.9 degrees to maximize the stability in off-camber sections, increase our maximum lean angle and allow us to carry great speed through the chunder.”

Ibis Mojo HD4 Review

Frame color options include Fireball Red or… Photo by Dave Trumpore, Courtesy of Ibis

Ibis Mojo HD4 Review

… Anejo Silver and Lime. Photo by Josh Sawyer and Courtesy of Ibis Cycles

Reach has also increased, jumping by 4mm on the size small frame and 34mm on the XL that Mtbr has been testing. “We have seen many consumers buying bikes that were a size larger than we anticipated, indicating that we wanted to grow the reach of the Mojo HD4 by at least that much,” explained Ibis. “Compared to the Mojo HD3, size by size we increased reach by one whole frame size then added a little more. This longer reach combined with the slacker head angle greatly increases the wheelbase and gives a very stable ride for the roughest terrain.”

The new bike also has accommodation for longer dropper posts thanks to a seat tube length reduction and bore depth increase. Mtbr tested a 150mm Fox Transfer, but it will go all the way to 170mm when using the KS Lev or RockShox Reverb, according to the Ibis website.

Ibis Mojo HD4 Review

Ibis team captain Robin Wallner of Sweden had his best ever EWS finish, placing sixth in the men’s pro race in Ireland. Photo by Dave Trumpore, Courtesy of Ibis

Ibis also claims the new bike’s frame has a 30% stiffer upper link, and 40% stiffer lower link, and that the HD4’s overall refined carbon lay-up has increased overall frame stiffness. It soaks up bumps big and small via dw-link v5 kinematics that Ibis says are the most efficient to date. “From the suspension standpoint, we absolutely love how the current Mojo HD3 pedals,” Ibis said. “We didn’t want to mess with such a dialed suspension design so we left the kinematics the same for the Mojo HD4. What we did do, is engineer more progression into the shock leverage curve, allowing for more big-hit capability in very rough terrain. The travel went up a tiny bit, and it now actually has 153mm of rear travel. The bike is intended to fit a piggy-back rear air shock while still fitting a 22oz water bottle in the frame. Coil shocks are not recommended, due to the clevis shock yoke extending the eye-to-eye too far to give a good bushing overlap ratio.”

Wheelbase also saw change, lengthening across the size range. It’s now 1163mm, 1192mm, 1210mm and 1251mm for frames S-XL. For the HD3 those numbers were 1135mm, 1146mm, 1168mm, and 1189mm. Chainstays remain the same at 430mm across the full size range.

Ibis Mojo HD4 Review

The headtube angle has been slacked to 64.9 degrees. Photo by Otto Maddox

The boosted 27.5 bike fits tires up to 2.8 and comes in two frame colors Fireball Red and Anejo Silver and Lime. The bottom line, says Ibis, is a bike that’s focus is on stability and speed where big hit performance is enhanced through increased progression in the shock tune. On sale date is June 15. Frame only will be $2999, with build kits starting at $4199.

Ibis Mojo HD4 Review

This size XL tester pre-production set-up weighed in at 29.2 pounds.

Mtbr has had a pre-production frame in house for a couple weeks that featured the following spec: Fox 36 Factory fork, Fox Float X2 Factory shock, Ibis 742 carbon wheels with Industry Nine hubs, Maxxis Minion DHF 27.5×2.5 tires, Shimano XT brakes and SRAM X01 Eagle drivetrain. Weight as tested was 29.2 pounds. Here are full geo numbers and some first ride impressions.

Ibis Mojo HD4 Review

Full geo breakdown (click image to enlarge).

Pros
  • Bottomless suspension feel
  • Clearance for piggyback shock
  • Accommodation for longer droppers
  • Roomy front end
  • Threaded bottom bracket
  • Increased reach will allow some riders to size down
  • Wide Trail tires best of both worlds
  • Will accommodate tires up to 2.8
  • Huge gear range with SRAM Eagle and 32T chainring
  • Linear suspension feel until very end of stroke
  • No rear end hang up in chunk
  • Superb handling through corners
  • Very centered on-bike feel
  • Great stability at speed
  • Room for water bottle inside frame
  • Climbs great for enduro bike
Cons
  • Still looking…
Ibis Mojo HD4 Review

If EWS success is any indication, this new bike is a winner. Photo by Dave Trumpore, Courtesy of Ibis

Already Race Proven

The new Ibis Mojo HD4 made its racing debut a few weeks back at the Enduro World Series stop in Portugal, when team riders were spotted on course with pro-production frames. But the true world unveiling came this past weekend in Ireland at round No. 4 of the EWS. The results were impressive. Two team riders recorded personal best performances, and four riders landed inside the top 10, which easily kept the Ibis enduro team at the top of the overall standings.

Team captain Robin Wallner of Sweden had his best ever EWS finish, placing sixth in the men’s pro race. Afterward he had nothing but glowing praise for the new HD4. “When the trail points downhill and things get steeper, the bike is easy to move around, giving me that extra bit of confidence,” he said.

Ibis Mojo HD4 Review

The new bike passed its EWS test with flying (bright red) colors. Photo by Dave Trumpore, Courtesy of Ibis

It was a similar story for Zakarias Blom Johansen of Norway who scored his top placing ever in an EWS race, ending up ninth. “With a slacker head angle and longer wheelbase I felt right at home,” he said. “The new modern geometry makes the bike super stable when you start picking up speed, and the grip you get in the off-camber turns is still blowing my mind. The progression in the shock’s spring curve makes a big difference when you’re hitting the big compressions, while the small bump sensitivity is still there.”

Ibis Mojo HD4 Review

The frame can now accommodate a flipped piggyback shock — and a full size water bottle. Photo by Dave Trumpore, Courtesy of Ibis

Mtbr’s Take

With just a half dozen rides on the new bike, it’s irresponsible to draw any long-term conclusions. But if initial experience is any indicator, the Mojo HD4 will pick up right where the Mojo HD3 left off as one of the best performing enduro bikes on the market.

Say what you will about Strava, but as a product tester it’s a great way to compare efforts on various bikes. So far the Mojo HD4 has proven to be a weapon of mass PR destruction. In the span of two weeks, I’ve scored at least a half dozen downhill segment personal records, including one KoM, which isn’t easy to do in a place like my home testing grounds in Crested Butte where practically everyone is fast.

The reason for this can be chalked up to one word: confidence. You can simply point this bike at or down just about anything and come cleanly out the other side. It has a superbly planted and controlled feel, maintaining traction, and railing through corners with snappy precision.

Ibis Mojo HD4 Review

In two weeks of testing, we set at least six downhill PRs. Photo by Otto Maddox

Just as impressive is how well-mannered this bike is going uphill. You’d expect a front end with a 64.9-degree head angle to flop around like a fish when ascending, but the steep seat tube angle does a great job of keeping its pilot’s weight far enough over the front wheel that vague steering has not been a real issue.

Ibis Mojo HD4 Review

The latest dw-link is remarkably stable going uphill and nearly bottomless coming down. Photo Courtesy of Ibis Cycles

No this will never be confused with an XC racer, but unlike other enduro rigs I’ve tested, I could honestly see reaching for this bike on an everyday basis just as you’d do with a well-rounded trail bike. But in this case the bike has 6 inches of bottomless travel and a slacked out front end that’ll let you change through just about any obstacle without concern for your dental work. The feel is superbly planted and controlled, yet still plenty poppy and playful when the situation (or inclination) calls for it. (Ibis willing) we’re planning on logging more miles on this test bike in the coming months and will update with a longer-term review then. For now, though, it’s a big thumbs up for the new Ibis Mojo HD4.

Initial rating: 4.5 out of 5 Flamin’ Chili Peppers 4.5 Flamin' Chili Peppers
Price as tested: approximately $7899 (not a stock build)
More Info: www.ibiscycles.com

Photo Thumbnails (click to enlarge)

About the author: Jason Sumner

An avid cyclist, Jason Sumner has been writing about two-wheeled pursuits of all kinds since 1999. He’s covered the Tour de France, the Olympic Games, and dozens of other international cycling events. He also likes to throw himself into the fray, penning first-person accounts of cycling adventures all over the globe. Sumner, who joined the RoadBikeReview.com / Mtbr.com staff in 2013, has also done extensive gear testing and is the author of the cycling guide book "75 Classic Rides: Colorado." When not writing or riding, the native Coloradoan can be found enjoying time with his wife Lisa and daughter Cora.


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