2018 B'TWIN Ultra 900 AF XL
Build
700C/29 in × 25 mm
Insights
Somewhat upright stack and reach vs trend of endurance road bikes
Design deviates from other sizes of B'TWIN Ultra
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 627.4mm |
| Reach | 388.1mm |
| Stack to Reach Ratio | 1.62:1 |
| Seat Tube Length, C-T | 600mm |
| Top Tube Length, Effective/Horizontal HT Top | 580mm |
| Head Tube Angle | 73deg |
| Seat Tube Angle | 73.5deg |
| Head Tube Length | 207.5mm |
| Bottom Bracket Drop | 67mm |
| Bottom Bracket Height | 269mm |
| Chainstay Length | 410mm |
| Chainstay Length Horizontal | 404.5mm |
| Front-Center | 610.3mm |
| Front-Center Horizontal | 606.5mm |
| Wheelbase | 1011mm |
| Fork Offset/Rake | 45mm |
| Fork Length (Axle-To-Crown) | 375mm |
| Trail | 55.7mm mid/neutral |
| Mechanical Trail | 53.2mm |
| Wheel Flop | 15.6mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 104.3mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 99mm |
900 AF Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 25mm |
| Tire Outer Diameter | 672mm |
| Bike Length with Tires | 1683mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Aluminum |
| Fork Material | Carbon/Composite |
| Brake Type | Rim |
Source:https://findabikelive.blob.core.windows.net/bikes/btwin-ultra-700-af-road-bike-greygreen-ultra-700-af-road-bike-greygreen-2017_2-large.jpg