Here's what Ibis say about this frame...

The Mojo HD is the longer travel bigger brother to the Mojo and Mojo SL. The “HD” as we call it, has 160mm of rear wheel travel, up 20mm from the other Mojos. The Mojo Carbon, which we introduced in 2005, pioneered efficient, lightweight long travel suspension, blurring the lines between those previously separate categories. The Mojo HD takes this concept a step further, giving riders another level of skill and confidence in nearly every situation.

Features of the Mojo HD:

• 160mm of rear wheel travel.
• DW Link Suspension.
• 26″ Wheels.
• Weight for the frame and shock, size large: 6.3 lbs, 2.86Kg.
• 67 degree head angle with a 160mm fork.
• Polycarbonate down tube cable guard.
• Chain stay length: 17.125″.
• 12 x 135mm Maxle rear axle.
• Post mount magnesium left dropout, carbon right dropout.
• Compatible with the new tapered steerer standard: 1 1/8th hidden upper, 1.5 traditional lower.
• Compatible with both Chris King InSet and Cane Creek Frustum headsets.
• If you want to run your current straight 1 1/8″ fork, we’ve got you covered too. We will have an adapter available, and you will be able to use a King headset top and bottom.
• 2.35″-2.55″ rear tire depending on brand and height of cornering knobs.
• Dual row angular contact bearings in the front of the lower link that have less play than standard sealed bearings. Preload adjustment is not necessary. Large 28mm x 15mm x 7mm radial bearings in the rear for stiffness and long wear.
• The leverage ratio, like the Mojo and Mojo SL is designed for air shocks. The Mojo HD comes with a 8.5″ x 2.5″ Fox RP23. A DHX air will work on all but the small size. A coil shock is not offered because the linkage rates weren’t designed for it. We lowered the top tube to get slightly better standover than the regular small mojo while having a higher BB because of the longer travel (we managed to retain the DHX air compatibility in 3 of the 4 sizes).
• The Bottom Bracket height is 13.8″-14″ depending on tires.
• Front derailleur (if you use one) and adjustable seatpost housing (if you use one) run along the top tube.