order bynamepriceyear2021-2220202019201820172016201520142013201220112010200920082007 AUTHOR Ultrasonic 27,5 2021-22 Tripple butted alloy frame. RST F1RST air fork. SHIMANO Deore groupset. AUTHOR Sonic 27,5 2021-22 Triple butted alloy frame. RST air fork. Hydraulic TEKTRO brakes. pg. 1 of 11