Ibis has revamped the HD platform making it longer, slacker and better suited to the rigors of modern enduro racing.
In fact, the HD4 has already had a strong showing on the race circuit. Four members of the Ibis Cycles Enduro Race Team rode the new bike to top 10 finishes over the weekend at the latest stop on this season’s Enduro World Series in Wicklow, Ireland, to retain the top spot in the team standings.
Ibis HD4 highlights
- Longer and slacker than previous versions
- 153mm rear travel
- Stiffer frame and linkages
- More progressive leverage curve
- Designed around 27.5in wheels
- Clearance for up to 2.8in wide tires
- Threaded bottom bracket
- Available now
Now in its fourth generation, the HD4 has nearly the same rear wheel travel of its predecessor. It gets a very slight increase in rear travel from 150 to 153mm as a result of some suspension tweaking, but departs significantly from there.
The new bike is significantly slacker than the HD3, which had a 66.6-degree head tube angle. The front of the HD4 has been relaxed to 64.5 degrees when measured with a 160mm Fox 36 fork.
Another nod to modern enduro trends is the increased reach measurements across the four-bike size range, from 4mm on the size small to a 34mm increase on the XL model. Essentially, every frame moves up a size in terms of reach when compared to the previous bike.
The HD4 features a shorter seat tube with a deeper bore, increasing the frame’s compatibility with longer stroke droppers. Ibis lists a compatibility chart on the HD4 page that will help riders determine how long they can go — from 100mm all the way to 175mm on some dropper models.
Ibis worked with suspension designer Dave Weagle to revise the bike's kinematics. The HD4 is more progressive, which should make it better able to cope with large, high-velocity impacts. Ibis notes that coil shocks are still not recommended with the new bike.
This enduro racer follows in the footsteps of the shorter-travel Mojo 3 when it comes to tire clearance. The HD4 can accommodate 27.5in tires up to 2.8in wide.
Visit www.ibiscycles.com for more information.