2020 Author Aura XR4 Base 580
Build
700C/29 in × 35 mm
Insights
Average stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of Author Aura XR4
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 627mm |
| Reach | 397mm |
| Stack to Reach Ratio | 1.58:1 |
| Seat Tube Length, C-T | 580mm |
| Seat Tube Length, C-C | 540mm |
| Top Tube Length, Effective/Horizontal HT Top | 595mm |
| Top Tube Length, Actual C-C | 576mm |
| Top Tube Slope | 7.4deg |
| Head Tube Angle | 72deg |
| Seat Tube Angle | 72.5deg |
| Head Tube Length | 200mm |
| Bottom Bracket Drop | 68mm |
| Bottom Bracket Height | 278mm |
| Chainstay Length | 425mm |
| Chainstay Length Horizontal | 419.5mm |
| Front-Center | 630.2mm |
| Front-Center Horizontal | 626.5mm |
| Wheelbase | 1046mm |
| Fork Offset/Rake | 68mm |
| Fork Length (Axle-To-Crown) | 400mm |
| Trail | 40.9mm low |
| Mechanical Trail | 38.9mm |
| Wheel Flop | 12mm |
| Tire to Pedal Spindle Distance With 175 mm cranks | 109.2mm |
| Pedal Spindle to Ground Clearance With 175 mm cranks | 103mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 35mm |
| Tire Outer Diameter | 692mm |
| Bike Length with Tires | 1738mm |
| Crank Length | 175mm |
| Handlebar Width | 460mm |
| Stem Length | 105mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Unknown |
| Fork Material | Unknown |
| Brake Type | Disc |
Source:https://en.author.eu/adventure/gravel-bike/author-aura-xr4-2020-ua42930102