The new adjustable ULTRA Stability System (USS) option allows for avoidance of unpredictable situations and stabilizes the movement of the wheelie machine straight, which means more stability on the ground.
You can choose a Single ULTRA Connection Set (UCS) or upgrade it to a Dual UCS which will save you a lot of time when swapping mini and regular/large size bikes as you don’t have to unbolt or detach the cones with thrust bearings and screw them into other holes. This set can also be as a spare in case of any damages during unforeseen incidents.
Fits Wheelie Machines: V4.0 / V4.0 PRO / V4.0 MINI (30mm versions only) / Gen 5 / 5 MINI / 5 PRO / 5PRO Max / ULTRA
The new ULTRA Wheels with reliable custom-made reinforced replaceable bearings. No more firm tires. The best wheelie experience can be gained with the soft wheels only. We inflate our wheels with nitrogen. This set includes 3 modified wheels (with new 6 reinforced bearings installed).