2021 Viathon Bicycles G.1 Base (700c) 520
Build
700C/29 in × 40 mm
Insights
Somewhat aggressive stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of Viathon Bicycles G.1
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 545mm |
| Reach | 378.9mm |
| Stack to Reach Ratio | 1.44:1 |
| Seat Tube Length, C-T | 520mm |
| Top Tube Length, Effective/Horizontal HT Top | 530mm |
| Top Tube Slope | 4.9deg |
| Head Tube Angle | 71deg |
| Seat Tube Angle | 74.5deg |
| Head Tube Length | 125mm |
| Bottom Bracket Drop | 69mm |
| Bottom Bracket Height | 282mm |
| Chainstay Length | 425mm |
| Chainstay Length Horizontal | 419.4mm |
| Front-Center | 598mm |
| Front-Center Horizontal | 593.6mm |
| Wheelbase | 1013mm |
| Fork Offset/Rake | 48mm |
| Fork Length, Unknown | 394mm |
| Trail | 70.1mm high |
| Mechanical Trail | 66.3mm |
| Wheel Flop | 21.6mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 77mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 112mm |
Base (700c) Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 40mm |
| Tire Outer Diameter | 702mm |
| Bike Length with Tires | 1715mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Carbon/Composite |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Source:https://www.viathonbicycles.com/collections/gravel-multi-surface-g-1/products/g-1-grx-600?variant=30117410504817