Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Carbon -
Wheels 700c -
Groupset GRX 800 -
Suspension Rigid -
Drivetrain 1 × 11 -
Brakes Hydraulic Disc
Sizing
Recommended size guide.
52cm
158cm - 170cm
54cm
168cm - 177cm
56cm
175cm - 185cm
58cm
183cm - 190cm
60cm
188cm - 198cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
VIATHON G.1 GRAVEL FRAME
Suspension Fork
VIATHON G.1 GRAVEL FORK
Drivetrain
Rear Derailleur
SHIMANO GRX 800 RD-RX812, 11-SPEED, SHADOW
Front Derailleur
N/A
Shift Levers
SHIMANO GRX 800 BR-RX810, DISC BRAKE
Cassette
SHIMANO XT CS-M8000, 11-SPEED, 11-42T
Crank
SHIMANO GRX 800 FC-RX810-1, HOLLOWTECH 2, 42T
Bottom Bracket
SHIMANO SM-BBR60
Chain
SHIMANO CN-HG701-11, 11-SPEED
Wheels
Rims
MERCURY G1C DISC, CENTER LOCK, SHIMANO 11-SPEED
Tires
IRC BOKEN, 700 X 40, FOLDING
Brakes
Brake Levers
SHIMANO GRX 800 BR-RX810, DISC BRAKE
Disk Rotors
SHIMANO SM-RT800, 160MM, W/LOCK RING
Cockpit
Stem
ZIPP SERVICE COURSE SL B1 31.8MM, 6°, 110MM
Handlebar
ZIPP SERVICE COURSE SL-70
Headset
FSA
Seat
Saddle
SELLE ITALIA NOVUS BOOST MAG
Seatpost
ZIPP SERVICE COURSE SL C1, 27.2MM, 400MM
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | 52cm | 54cm | 56cm | 58cm | 60cm |
|---|---|---|---|---|---|
| Stack Reach Ratio | 1.44 mm | 1.48 mm | 1.5 mm | 1.52 mm | 1.5 mm |
| Bottom Bracket Height | 280 mm | 280 mm | 280 mm | 280 mm | 280 mm |
| Front Center | 598 mm | 604 mm | 609 mm | 613 mm | 634 mm |
| Rake | 48 mm | 48 mm | 48 mm | 48 mm | 48 mm |
| Trail | 68.4 mm | 65.2 mm | 61.9 mm | 58.8 mm | 58.8 mm |
| Stack | 546 mm | 566.8 mm | 583 mm | 599.2 mm | 613.5 mm |
| Reach | 379.9 mm | 383.8 mm | 388.6 mm | 393.1 mm | 409 mm |
| Top Tube Length | 531 mm | 546 mm | 561 mm | 576 mm | 596 mm |
| Seat Tube Angle | 74.5 ° | 74 ° | 73.5 ° | 73 ° | 73 ° |
| Seat Tube Length | 520 mm | 540 mm | 560 mm | 580 mm | 600 mm |
| Head Tube Angle | 71 ° | 71.5 ° | 72 ° | 72.5 ° | 72.5 ° |
| Head Tube Length | 125 mm | 145 mm | 160 mm | 175 mm | 190 mm |
| Chainstay Length | 426 mm | 426 mm | 426 mm | 426 mm | 426 mm |
| Wheelbase | 1014 mm | 1020 mm | 1025 mm | 1030 mm | 1050 mm |
| Bottom Bracket Drop | 69 mm | 69 mm | 69 mm | 69 mm | 69 mm |
| Wheels | 700 | 700 | 700 | 700 | 700 |
| Rider Min Height | 158 cm | 168 cm | 175 cm | 183 cm | 188 cm |
| Rider Max Height | 170 cm | 177 cm | 185 cm | 190 cm | 198 cm |
About this model
G.1 GRX 800 is part of the Viathon G1 model. Viathon released 12 bikes variations of this model so far. You can get a glimpse at all models from 2021, by clicking on this link.
Model range prices
Viathon G.1 Rival 2021 is the most affordable bike of this model and has a price of 2498$. On the other hand, Viathon G.1 Red eTap AXS 2021, is the most expensive and costs 6998$.
Safety
Take safety seriously when you ride your bike, and always wear your helmet. Moreover, don’t ride on the sidewalk. This is actually against the law in some states and can be dangerous for both you and pedestrians.
Average price for Gravel bikes
According to our math, the average price for a trustworthy Gravel bike is 2462$. However, even though the average price of a Gravel bike is lower, you might still be able to get a top-quality bike. To sum up, when you purchase your bike, make sure to check if it has reviews, and also do some components research.
Furthermore, if we have a quick look at this model’s cost, we can see that at its release date the price was 2998$. Comparing the average cost of a Gravel bike to this one, you will see that G.1 GRX 800 price is 21.77% higher.
G.1 GRX 800 components
Fork material
When it comes to the fork, this bike has a carbon one, so, it is super light and stiff. In conclusion, a carbon fork gives you great control when steering, and is also more forgiving.
Wheels
When it comes to wheels, the G.1 GRX 800 bike is equipped with the 700c aluminum model. These wheels are the most used kind for road bikes in general. However, while they give you great speed and control, these wheels are not so bump-friendly.
Brakes
Stopping the bike when needed, it’s essential for your safety. This bike has Hydraulic Disc brakes. Hydraulic disc brakes are perfect for mountain biking, road cycling, and commuting. To sum up, your safety is in good hands.
Sizes
There are 5 sizes available for this model. Rider height can be anywhere between 158 cm – 198 cm (5.18 ft – 6.5 ft). In conclusion, it won’t take much to find one that’s right for you.