Road Bike Material: carbon fiber Wheel diameter size: 700C Height: 46cm, 48cm, 50cm, 52cm, 54cm Wheel type: spoke wheel, spray paint can be customized logo, spray paint inside stick Frame structure: car as a whole Whether to fold: No Propulsion method: chain Frame type: hard frame Front fork type: resistance rubber (mid-range without damping) Pedal type: ordinary pedal, high lubrication road pedal Ergonomic design: non-slip more grip, lighter weight Brake system: Double V brake Brake type: rear axle Suitable height: 130-185cm Suitable weight: 鈮?50kg Suitable for the crowd: adults Optional: Imitation Shimano gearbox, genuine Shimano gearbox, Shimano front and rear finger dials, original Shimano gears, internal wiring, hydraulic brakes, aluminum alloy wheels, aluminum alloy handlebars Optional speed: 21 speed, 22 speed, 24 speed, 27 speed, 30 speed Suitable terrain: mountain, road Breaking wind racing design: EPS technology Net weight: 8.3kg, pac edging size: 140*20*75CM Frame: Thunder high-modulus carbon fiber/EPS/break wind racing/internal wiring/star lacquer/UV laser wire drawing mark Fork: Xunlei high modulus carbon fiber road hard fork / UV laser marking Headphones: TW aluminum alloy CNC tapered bearings Variable speed: RS-22 speed, small set of aluminum wheels, small set of aluminum wheels Refers to: RETROSPEC-22 speed Front dial: RETROSPEC Rear dial: RETROSPEC Crankset: VICTOR lightweight aluminum CNC hollow 34-50T Flywheel: SUNSHINE-11 speed, colorful, 11-28T Chain: YBN-11 speed, SUMC-11 speed, color Bottom shaft: BB92*41*24 pressed in, hollow bearing Rim: RS lightweight aluminum alloy double-layer reinforced/frosted/40mm frame height/UV standard Wheel hub: RS lightweight aluminum alloy / all-round card type / front 18 and rear 21 holes side pull Tires: Continental, UltraSportII, 700*25C Handlebar set: TW lightweight aluminum non-film reflective cursor/flat-curved handlebar 31.8*420mm/stem 90mm Seat post: Frame matching / high modulus carbon fiber / broken wind drop type / no membrane reflector Brake: RS lightweight aluminum alloy road C brake Wheel hub: RS lightweight aluminum alloy / four-piece type / front 18 and rear 21 holes side pull Spokes: Shunjiu high rigidity 14G flat steel Handle cover: woven pattern, comfortable and non-slip Seat cushion: TW lightweight and comfortable racing type Pedal: SENCE lightweight aluminum alloy anti-skid Line pipe: JAGWIRE Color: red, silver, titanium, beige, gray-yellow, white-red, gray-black, black-red, black-silver, orange Size: 700C*46cm, 700C*48cm, 700C*50cm, 700C*52cm, 700C*54cm Model: 700C road bike b14Road Bike website:http://www.sgbmountainbike.com/road-bike/