Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Carbon -
Wheels 700c -
Groupset GRX 800, GRX 600 -
Suspension Rigid -
Drivetrain 2 × 11 -
Brakes Hydraulic Disc
Sizing
Recommended size guide.
48cm
152cm - 162cm
50cm
160cm - 170cm
52cm
168cm - 178cm
54cm
176cm - 185cm
56cm
183cm - 193cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
AUTHOR carbon Toray T700 / M40 monocoque gravel
Suspension Fork
AUTHOR carbon Toray T700 monocoque gravel, 1.5" tapered
Drivetrain
Rear Derailleur
SHIMANO GRX 810
Front Derailleur
SHIMANO GRX 810
Shift Levers
SHIMANO GRX 600 (22)
Cassette
SHIMANO HG701-11, 11-34 (11)
Crank
SHIMANO GRX 600, 46-30 teeth, 172.5 / 175 mm cranks
Chain
KMC X11 EL
Wheels
Front Hub
MAVIC Allroad UST Disc CL wheel set, 24 holes, 12 × 100 mm thru front axle, 12 × 142 mm rear axle
Rear Hub
MAVIC Allroad UST Disc CL wheel set, 24 holes, 12 × 100 mm thru front axle, 12 × 142 mm rear axle
Rims
MAVIC Allroad UST Disc CL wheel set, 24 holes
Spokes
MAVIC
Tires
PANARACER Gravel King SK aramid 700 × 38c
Brakes
Brakes
SHIMANO GRX 400, disc hydraulic (160 mm rotors)
Cockpit
Stem
RITCHEY Comp 4-Axis
Handlebar
RITCHEY Road ErgoMax, 420 / 440 / 460 mm
Seat
Saddle
AUTHOR Guru CR
Seatpost
RITCHEY Comp (27.2)
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | 48cm | 50cm | 52cm | 54cm | 56cm |
|---|---|---|---|---|---|
| Stack Reach Ratio | 1.505 mm | 1.564 mm | 1.58 mm | 1.627 mm | 1.617 mm |
| Bottom Bracket Height | 272 mm | 274 mm | 274 mm | 277 mm | 277 mm |
| Front Center | 592 mm | 593 mm | 601 mm | 611 mm | 626 mm |
| Rake | 52 mm | 52 mm | 52 mm | 52 mm | 52 mm |
| Trail | 65 mm | 64 mm | 62 mm | 62 mm | 62 mm |
| Stack | 551 mm | 571 mm | 586 mm | 607 mm | 621 mm |
| Reach | 366 mm | 365 mm | 371 mm | 373 mm | 384 mm |
| Top Tube Length | 514 mm | 534 mm | 550 mm | 565 mm | 580 mm |
| Seat Tube Angle | 75 ° | 73.5 ° | 73 ° | 72.5 ° | 72.5 ° |
| Seat Tube Length | 480 mm | 500 mm | 520 mm | 540 mm | 560 mm |
| Head Tube Angle | 70.8 ° | 71.2 ° | 71.5 ° | 71.5 ° | 71.5 ° |
| Head Tube Length | 120 mm | 140 mm | 155 mm | 180 mm | 195 mm |
| Chainstay Length | 425 mm | 425 mm | 425 mm | 425 mm | 425 mm |
| Wheelbase | 1005 mm | 1007 mm | 1015 mm | 1026 mm | 1041 mm |
| Bottom Bracket Drop | 77 mm | 75 mm | 75 mm | 72 mm | 72 mm |
| Wheels | 700 | 700 | 700 | 700 | 700 |
| Rider Min Height | 152 cm | 160 cm | 168 cm | 176 cm | 183 cm |
| Rider Max Height | 162 cm | 170 cm | 178 cm | 185 cm | 193 cm |
Model Overview
Guru is part of the Author Guru model. Author released 3 bikes variations of this model so far.
Safety
When you go for a ride, don’t forget to put your helmet on. Moreover, ride with traffic, not against it. This will help you stay visible to drivers and also makes it easier for them to see you.
Average price for Gravel bikes
According to our math, the average price for a trustworthy Gravel bike is 2462$. However, you could also get a good Gravel bike even if you pay a lower amount than the average price. As a general rule of thumb, you should always read reviews about the bike and its components before buying it to ensure you don’t pay too much.
Gravel bikes average weight
Gravel bikes have an average weight of 8.13 kg (17.92 lbs). You will have a greater advantage on climbs if your bike is easier than the average. On descents, however, a heavier bike will give you extra speed.
With a weight of 9.2 kg (20.28 lbs), Author bike is considerably heavier than average. In short, the average Gravel bike weight is 13.16% lower than this one.
Guru components
Fork material
Guru has a carbon fork, so, it’s a great addition to the bike’s value. However, carbon forks should be regularly inspected for damage because even the smallest crack could cause the fork to fall apart.
Wheels
When leaving the production line, the Guru model has 700c aluminum wheels. These are the most popular wheels for road, aero, gravel, cyclocross, race, and gravel bikes. However, while they give you great speed and control, these wheels are not so bump-friendly.
Brakes
We ride faster and faster, so a good braking system is essential on a bike nowadays. The Guru comes with Hydraulic Disc brakes. Hydraulic disc brakes provide amazing stopping power, no matter what the terrain. To sum up, these are ideal for anyone.
Sizes
Guru comes in 5 sizes, that range from 152 cm – 193 cm (4.99 ft – 6.33 ft). In conclusion, finding one for you shouldn’t be a problem.