Mbs' Colt 90X is an awesome entry-level mountain board that comes fully assembled and equipped with a brake system that every year gives thousands of new mountain boarders the confidence to tackle this exciting new Sport. This year's Colt 90X has undergone more improvements than ever before. By upgrading its tires to Genuine MBS T1 tires with specially formulated high-rebound rubber material MBS has made this year's Colt 90 more than twice as fast as last year's, and by upgrading the Colt 90's tube material to high-grade butyl rubber we've reduced air loss and flats to little more than a memory. Other wheel improvements include Genuine MBS rubber-shielded 12x28mm bearings and mbs' brand new fivestar hubs. Finally, to prove we are serious about allowing this board to be pushed harder than ever before we also upgraded its ats axles from 9.5 to 12mm to match the diameter of the Matrix axles. In addition to the obvious performance enhancements these upgrades offer they have made the Colt 90X more compatible with the rest of the MBS line so the choice to one day upgrade your hubs or trucks is as simple as that.