2019 Viathon Bicycles M.1 Base

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 Scale
Source:https://www.viathonbicycles.com/products/m1-gx-eagle