2018 B'TWIN Ultra 520 AF GF ROAD BIKE - RIVAL DISC XS
Build
700C/29 in × 25 mm
Insights
Somewhat aggressive 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 | 523mm |
| Reach | 375mm |
| Stack to Reach Ratio | 1.39:1 |
| Seat Tube Length, Unknown | 450mm |
| Top Tube Length, Effective/Horizontal HT Top | 525mm |
| Top Tube Slope | 10.3deg |
| Head Tube Angle | 71.5deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 115mm |
| Chainstay Length | 415mm |
| Wheelbase | 983mm |
| Fork Offset/Rake | 40mm |
| Trail | 70.2mm high |
| Mechanical Trail | 66.6mm |
| Wheel Flop | 21.1mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | — |
| Pedal Spindle to Ground Clearance With 170 mm cranks | — |
520 AF GF ROAD BIKE - RIVAL DISC Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 25mm |
| Tire Outer Diameter | 672mm |
| Bike Length with Tires | 1655mm |
| Crank Length | 170mm |
| Handlebar Width | 400mm |
| Stem Length | 80mm |
| Stem Angle | 7deg |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Aluminum |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 155 cm to 166 cm |
Source:https://www.decathlon.co.uk/ultra-520-af-gf-road-bike-rival-disc-id_8390785.html, Fork specs: https://www.bikeradar.com/reviews/bikes/road-bikes/btwin-ultra-520-af-gf-rival-disc-review/