Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 700c -
Groupset Tiagra, GRX 400 -
Suspension Rigid -
Drivetrain 2 × 10 -
Brakes Hydraulic Disc
Sizing
Recommended size guide.
50cm
160cm - 170cm
52cm
168cm - 178cm
54cm
176cm - 185cm
56cm
183cm - 193cm
58cm
190cm - 205cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
triple butted alloy 6061
Suspension Fork
AUTHOR carbon 1.5" tapered
Drivetrain
Rear Derailleur
SHIMANO Tiagra (20)
Front Derailleur
SHIMANO GRX 400
Shift Levers
SHIMANO GRX 400 (20)
Cassette
SHIMANO HG500-10, 11-34 (10)
Crank
FSA Gossamer Pro, 46-30 teeth, 172.5 / 175 mm cranks
Chain
KMC X10
Wheels
Front Hub
QUANDO Road Disc, 12 × 100 mm thru front axle, 32 holes
Rear Hub
QUANDO Road Disc, 12 × 100 mm thru front axle, 32 holes
Rims
JALCO SRD 21, 32 holes
Spokes
black stainless steel 2.0 mm
Tires
PANARACER Gravel King SK Sport 700 × 38c
Brakes
Brakes
SHIMANO RS305, kotou?ové mechanické (160 mm kotou?e)
Cockpit
Stem
AUTHOR alloy
Handlebar
PROMAX 420 / 440 / 460 mm
Seat
Saddle
AUTHOR Guru
Seatpost
AUTHOR alloy (27.2)
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | 50cm | 52cm | 54cm | 56cm | 58cm |
|---|---|---|---|---|---|
| Stack Reach Ratio | 1.45 mm | 1.487 mm | 1.518 mm | 1.534 mm | 1.579 mm |
| Bottom Bracket Height | 279 mm | 279 mm | 280 mm | 281 mm | 281 mm |
| Front Center | 599 mm | 605 mm | 616 mm | 626 mm | 630 mm |
| Rake | 45 mm | 45 mm | 45 mm | 45 mm | 45 mm |
| Trail | 76 mm | 73 mm | 73 mm | 69 mm | 65 mm |
| Stack | 548 mm | 568 mm | 586 mm | 606 mm | 627 mm |
| Reach | 378 mm | 382 mm | 386 mm | 395 mm | 397 mm |
| Top Tube Length | 530 mm | 545 mm | 560 mm | 580 mm | 595 mm |
| Seat Tube Angle | 74.5 ° | 74 ° | 73.5 ° | 73 ° | 72.5 ° |
| Seat Tube Length | 500 mm | 520 mm | 540 mm | 560 mm | 580 mm |
| Head Tube Angle | 70.5 ° | 71 ° | 71 ° | 71.5 ° | 72 ° |
| Head Tube Length | 120 mm | 140 mm | 160 mm | 180 mm | 200 mm |
| Chainstay Length | 425 mm | 425 mm | 425 mm | 425 mm | 425 mm |
| Wheelbase | 1014 mm | 1020 mm | 1031 mm | 1042 mm | 1046 mm |
| Bottom Bracket Drop | 70 mm | 70 mm | 69 mm | 68 mm | 68 mm |
| Wheels | 700 | 700 | 700 | 700 | 700 |
| Rider Min Height | 160 cm | 168 cm | 176 cm | 183 cm | 190 cm |
| Rider Max Height | 170 cm | 178 cm | 185 cm | 193 cm | 205 cm |
Model Overview
Aura XR4 completes the Author Aura model. Author launched 21 bikes of this model so far. You can easily view all of the Author Aura bikes models from 2024, here.
Safety
When cycling always take safety very seriously. Wear a helmet, obey the traffic rules and wear hi-vis clothes. In short, take care of yourself so others can take care of you.
Average price for Gravel bikes
If you want to purchase a solid Gravel bike, it is important to know that the average cost is 2462$. However, even if your budget is less than the average, you might still be able to get a top-quality Gravel bike. 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.
Average weight for Gravel bikes
If we make a quick analysis of the average weight of a Gravel bike, we get 8.13 kg (17.92 lbs). An easier bike will give you a big advantage in climbs. However, a heavier bike can gain speed when you descend.
much heavier than average, Aura XR4 has a weight of 10.6 kg (23.37 lbs). In short, the average Gravel bike weight is 30.38% lower than this one.
Overview of components
Fork material
When it comes to the fork, this bike has a carbon one, 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 size
As for the wheels, Author Aura XR4 2024, has a 700c aluminum model. 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
When you want to stop the bike in time, the brakes are vital. The Aura XR4 has Hydraulic Disc brakes. Hydraulic disc brakes are perfect for mountain biking, road cycling, and commuting. To sum up, you can ride your bike with confidence.
Sizes
There are 5 sizes available for this model. Rider height can be anywhere between 160 cm – 205 cm (5.25 ft – 6.73 ft). In conclusion, finding one for you shouldn’t be a problem.