With bigger bikes come bigger demands The Domain offers a new burly 38mm chassis, short fender compatibility, and a confidence-inspiring DebonAir air spring matched with a reliable Motion Control RC damper RockShox even brought the performance of Plush damping fluid along for the ride Nothing goes as big as Domain does in value and performance.Includes Fender, Start Nut and Maxle Stealth 38mm chassis for increased stiffness and rider confidence