2019 Viathon Bicycles M.1 Base
- Category
- Hardtail Cross-country MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Carbon/Composite
- Suspension
- 120mm fork travel
- Features
- Disc brake
Somewhat upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Somewhat upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry |
Geometry
Small | Med | Large | |
Stack | 621mm | 621mm | 630mm |
Reach | 391mm | 417mm | 439.5mm |
Stack to Reach Ratio | 1.59:1 | 1.49:1 | 1.43:1 |
Seat Tube Length, C-T | 406mm | 432mm | 476mm |
Top Tube Length, Effective/Horizontal HT Top | 574mm | 600mm | 625mm |
Top Tube Slope | 24.6deg | 21deg | 16.8deg |
Head Tube Angle | 69.5deg | 69.5deg | 69.5deg |
Seat Tube Angle | 73.6deg | 73.6deg | 73.6deg |
Head Tube Length | 90mm | 90mm | 100mm |
Bottom Bracket Drop | 56mm | 56mm | 56mm |
Bottom Bracket Height | 313.4mm | 313.4mm | 313.4mm |
Chainstay Length | 440mm | 440mm | 440mm |
Chainstay Length Horizontal | 436.4mm | 436.4mm | 436.4mm |
Front-Center | 659mm | 685mm | 711mm |
Front-Center Horizontal | 656.6mm | 682.6mm | 708.6mm |
Wheelbase | 1093mm | 1119mm | 1145mm |
Fork Offset/Rake | 51mm | 51mm | 51mm |
Fork Length, Unknown | 531mm | 531mm | 531mm |
Trail | 83.7mm very high | 83.7mm very high | 83.7mm very high |
Mechanical Trail | 78.4mm | 78.4mm | 78.4mm |
Wheel Flop | 27.5mm | 27.5mm | 27.5mm |
Tire to Pedal Spindle | 119.6mm 170 mm cranks | 145.6mm 170 mm cranks | 171.6mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 143.4mm 170 mm cranks | 143.4mm 170 mm cranks | 143.4mm 170 mm cranks |
Base Build
Small | Med | Large | |
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 2.3in | 2.3in | 2.3in |
Tire Width Max | 2.4in | 2.4in | 2.4in |
Tire Outer Diameter | 738.8mm | 738.8mm | 738.8mm |
Bike Length with Tires | 1831.8mm | 1857.8mm | 1883.8mm |
Handlebar Width | 740mm | 740mm | 740mm |
Stem Angle | -6deg | -6deg | -6deg |
Stack and Reach vs. Category Trend
Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive
The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.
Learn more about the Upright/Aggressive ScaleCategory Trend
Hardtail Cross-country MTBSource:https://www.viathonbicycles.com/products/m1-gx-eagle