CTR Carbon Fiber Road Bike Glossy Black Runner's Athletics heritage jewelry heritage jewelry Their low air resistance makes them ideal for high speed cycling Component Specification Frame ROCKBROS 700C Carbon Fiber Frame Front Fork ROCKBROS Carbon Fiber Fork Handlebar Integrated Carbon Fiber Aero Handlebar Stem Integrated Carbon Fiber Aero Stem Saddle DDK Saddle Seatpost Carbon Fiber Seatpost Shifters ShunTai 2×12 Speed Shifters Derailleurs ShunTai 2×12 Speed Derailleurs Cassette 12 Speed 11–32T Freewheel Brakes ShunTai Hydraulic Disc Brakes with 160mm Rotors Crankset Driving Hollow Crankset 170mm × 50 34T Rims 700C Carbon Fiber Rims linear braking power with excellent modulation and heat control