Carbon Frames & Carbon Forks 
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Well-designed fork combine with head tube, makes this bike more coordinated. The new tube shapes and the design it makes this frames the greatest union of our most advanced technologies. It makes riding more comfortable, challenge unlimited.
| TECHNICAL SPECIFICATIONS | |
| MODEL | CHALLENGE |
| OUT LOOKING | 3K GLOSSY, RED/PINK |
| FRAME | WIEL B075 |
| FRAME SIZE | 500/520MM ARE IN STOCK |
| FORK | WIEL FK500-5 |
| DOUBLE CONTROL HANDLE | SHIMANO 4600 |
| BINDER | SHIMANO 4600 |
| CHAIN | SHIMANO 4600 |
| CRANKSET | SHIMANO 4600 |
| FRONT DERAILLEUR | SHIMANO 4600 |
| REAR DERAILLEUR | SHIMANO 4600 |
| STEM | ITM 31.8*90mm |
| HANDLEBARS | ITM 31.8*420mm |
| SEATPOST | ITM 31.6*350mm |
| SADDLE | WIEL, BLACK |
| CASSETTE | SHIMANO 4600 |
| WHEELS | FULCRUM-R7 |
| TIRE | CST 700*23C |
| INNER TUBES | CST 700*19 |
| WEIGHT | 8.7kg |
| GEOMETRY | ||||||
| * *Not all sizes available in all markets | ||||||
| Size | 480mm | 500mm | 520mm | 540mm | 560mm | 580mm |
| Seat Tube (BB Center to Top) | 480mm | 500mm | 520mm | 540mm | 560mm | 580mm |
| Top Tube (effective) | 515mm | 525mm | 540mm | 555mm | 565mm | 580mm |
| Chain Stay (actual) | 408mm | 408mm | 408mm | 408mm | 408mm | 408mm |
| Seat Tube Angle | 75° | 74° | 73.5° | 73.5° | 73° | 72.5° |
| Bottom Bracket Drop | 70mm | 70mm | 70mm | 70mm | 70mm | 70mm |
| Head Tube Length | 115mm | 125mm | 140mm | 155mm | 170mm | 185mm |
| Head Tube Angle | 72° | 72° | 72.5° | 73° | 73° | 73.5° |
| Seat-Post ID | 31.6mm | 31.6mm | 31.6mm | 31.6mm | 31.6mm | 31.6mm |
| Seat-Clamp ID | 34.9mm | 34.9mm | 34.9mm | 34.9mm | 34.9mm | 34.9mm |
| Fork Length | 370.7mm | 370.7mm | 370.7mm | 370.7mm | 370.7mm | 370.7mm |
| Fork Rake | 45mm | 45mm | 45mm | 45mm | 45mm | 45mm |
| Wheelbase | 970mm | 971.6mm | 977.4mm | 987.9mm | 994.8mm | 996.9mm |
| Front-Center | 573.2mm | 573.9mm | 579.7mm | 590.1mm | ||
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