Ready to build your dream 'cross bike? Boone Disc frameset is built with ultralight 600 Series OCLV Carbon. It features a cyclocross-specific geometry, Rear IsoSpeed to smooth rough courses, and front and rear 12mm thru axle dropouts for better stiffness and handling. This bike was designed with input from cyclocross royalty, so you can trust it to handle everything from hurdles to sand pits Carbon rules on the cross course — it's lighter, more forgiving, and more efficient than aluminum Rear IsoSpeed cuts down on the fatiguing impacts of rough courses and increases compliance, helping you ride stronger for longer Boone's cross-specific geometry and tube shapes make shouldering easy so you can dominate all aspects of a race, including run-ups Seat mast cap (available in two lengths/two offsets) sold separately Smooth is fastIsoSpeed takes the edge off body-beating course bumps and gravel chatter so you can stay stronger longer, without giving up any pedaling efficiency. Cross racing techOur exclusive technologies give you and our pro racers the race-ready details will keep you out front: Ultra stable and compliant IsoSpeed fork. Smarter cable routing. Better shoulderability. Rugged 3S chain keeper. Frame 600 Series OCLV Carbon, IsoSpeed, tapered head tube, Internal cable routing, Ride Tuned seatmast, 3S chain keeper, T47 BB, flat mount disc, 142x12mm thru axle Fork Trek Cross, full carbon, tapered carbon steerer, flat mount disc, 12x100mm thru axle Skewer Front Bontrager Switch thru axle Skewer Rear Bontrager Switch thru axle, removable lever Geometry Chart B B Drop 7 Chainstay Length 42.5 Eff Top Tube 51.8 Frame Reach 37.5 Frame Size Number 49 cm Frame Stack 53.4 Head Angle 71.0° Head Tube Length 11 Offset 4.5 Saddle Rail Height Max Short 64.5 Saddle Rail Height Max Tall 67.5 Saddle Rail Height Min Short 58.5 Saddle Rail Height Min Tall 61.5 Seat Tube 47.6 Seat Tube Angle 75.0° Standover 74.7 Trail 7.4 Wheelbase 100.1 Wheel Size 700c
