2020 Author Aura XR4 Base 520
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 | 568mm |
| Reach | 382mm |
| Stack to Reach Ratio | 1.49:1 |
| Seat Tube Length, C-T | 520mm |
| Seat Tube Length, C-C | 480mm |
| Top Tube Length, Effective/Horizontal HT Top | 545mm |
| Top Tube Length, Actual C-C | 532mm |
| Top Tube Slope | 7.4deg |
| Head Tube Angle | 71deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 140mm |
| Bottom Bracket Drop | 70mm |
| Bottom Bracket Height | 276mm |
| Chainstay Length | 425mm |
| Chainstay Length Horizontal | 419.2mm |
| Front-Center | 604.9mm |
| Front-Center Horizontal | 600.8mm |
| Wheelbase | 1020mm |
| Fork Offset/Rake | 68mm |
| Fork Length (Axle-To-Crown) | 400mm |
| Trail | 47.2mm mid/neutral |
| Mechanical Trail | 44.7mm |
| Wheel Flop | 14.5mm |
| Tire to Pedal Spindle Distance With 172 mm cranks | 86.9mm |
| Pedal Spindle to Ground Clearance With 172 mm cranks | 104mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 35mm |
| Tire Outer Diameter | 692mm |
| Bike Length with Tires | 1712mm |
| Crank Length | 172mm |
| Handlebar Width | 440mm |
| Stem Length | 90mm |
| 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