Ibis has just announced the 4th generation of their venerable Mojo HD enduro bike. This full-carbon enduro destroyer continues to feature 153mm of rear travel, but the rest of the bike has seen tweaks in the latest model.
Ibis says that the HD4 features “refined progressive geometry” with Dave Weagle’s “most efficient system to date,” the dw-link v5 kinematics. The increased progressiveness should provide better protection against big hits and massive drops.
The new head tube angle is a slack 64.9 degrees, with reach numbers increasing across all size ranges. However, the actual amount of reach increase varies, from 4mm on a size small to 34mm on a size XL. For a detailed geometry breakdown, be sure to visit Ibis’s website.
The carbon frame has been reengineered as well, with a “30% stiffer upper link [and] 40% stiffer lower link,” according to Ibis. In addition, the rest of the carbon layup has been reengineered, “yielding greater frame stiffness overall.”
One final update is that the seat tubes have been shortened and the “bore depth increased,” which will allow for the longest dropper posts possible. Seat tubes shortening in size is a trend that we’re seeing develop across many brands. This helps accommodate the latest crop of long travel dropper posts on even the smallest size frames, so riders can “use the longest seatpost possible and still get their correct saddle height,” according to Ibis. “On the Medium, Large, and X-Large sizes, almost everyone should be able to use 170mm dropper seaposts, while 150mm dropper seatposts should work for almost all Small size owners,” according to Ibis.
As far as the component spec, while many of the exact components vary from model to model, the HD4 frame is designed for use with a 160mm fork, and is approved for up to a 170mm fork. The stays can accommodate 27.5″ tires of 2.3″, 2.5″, 2.6″, and 2.8″ Plus sizes. Despite this wide range of tire sizes, Ibis claims that the BB height, when you factor in tire sag, is the same across all sizes.
Weight for the frame and shock in a size large is 6.6lbs (2.98kg). HD4 framesets start at $2,999, with complete builds ranging up to $9,399 with a SRAM Eagle XX1 build.