order bynamepriceyear202120202019201820172016201520142013201220112010200920082007 AUTHOR Ultrasonic 27,5 2021 Tripple butted alloy frame. RST F1RST air fork. SHIMANO Deore groupset. AUTHOR Sonic 27,5 2021 Triple butted alloy frame. RST air fork. Hydraulic TEKTRO brakes. pg. 1 of 11