Bike details
Overview
Key information split into simple groups.
Bike summary
-
Category -
Frame Aluminum -
Wheels 27.5" -
Travel Front 80mm -
Fork RST AERIAL
-
Groupset Deore -
Suspension Hardtail -
Drivetrain 1 × 10 -
Brakes Hydraulic Disc
Sizing
Recommended size guide.
14"
140cm - 158cm
16"
155cm - 173cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
triple butted hydroformed alloy 6061 27.5"
Suspension Fork
RST Aerial 27.5 TnL air, lock out (80 mm)
Drivetrain
Rear Derailleur
SHIMANO Deore
Shift Levers
SHIMANO Deore (10)
Cassette
SHIMANO M4100-10, 11-46 (10)
Crank
PROWHEEL, 32 teeth, 165 / 170 mm cranks
Chain
KMC X10
Pedals
resin
Wheels
Front Hub
QUANDO Disc, 32 holes
Rear Hub
QUANDO Disc, 32 holes
Rims
AUTHOR Xenon TRC 27.5, 32 holes
Spokes
black stainless steel 2.0 mm
Tires
CST B-Trail aramid 27.5" × 2.25"
Brakes
Brakes
TEKTRO HD-M276 WS, disc hydraulic (6" rotors)
Cockpit
Stem
AUTHOR alloy
Handlebar
AUTHOR Flat Top bar, 9°, 620 / 640 mm
Grips
AUTHOR kratton rubber
Seat
Saddle
AUTHOR Champion (14") / Author Navigator (16")
Seatpost
AUTHOR alloy (31.6)
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | 14" | 16" |
|---|---|---|
| Bottom Bracket Height | 310 mm | 310 mm |
| Front Center | 636 mm | 651 mm |
| Rake | 43 mm | 43 mm |
| Top Tube Length | 550 mm | 575 mm |
| Seat Tube Angle | 74 ° | 73.5 ° |
| Seat Tube Length | 356 mm | 406 mm |
| Head Tube Angle | 69 ° | 69.5 ° |
| Head Tube Length | 110 mm | 115 mm |
| Chainstay Length | 420 mm | 420 mm |
| Wheelbase | 1052 mm | 1067 mm |
| Bottom Bracket Drop | 45 mm | 45 mm |
| Wheels | 27" | 27" |
| Rider Min Height | 140 cm | 155 cm |
| Rider Max Height | 158 cm | 173 cm |
About this model
Sonic 27.5 belongs to the Author Sonic model. Author launched 8 bikes 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.
Crosscountry bikes average price
If you want an acceptable Crosscountry bike you should know that the average price is 1905$. However, this doesn’t mean that if you spend less money on a Crosscountry bike, you couldn’t get a decent one. To sum up, when you purchase your bike, make sure to check if it has reviews, and also do some components research.
Average weight for Crosscountry bikes
If we make a quick analysis of the average weight of a Crosscountry bike, we get 12.4 kg (27.34 lbs). A lighter bike will give you some extra advantage when climbing. A heavier bike will have more speed for descents.
With a weight of 12.2 kg (26.9 lbs), Author bike is slightly lighter than average. In conclusion, the average Crosscountry bike weighs 1.64% more than Sonic 27.5.
Overview of components
Fork
The RST AERIAL is included from the factory. It has a travel distance of 80mm. Bike forks are great for shock absorption and provide you with a smooth ride. In conclusion, always look for a fork with decent travel when you buy a bike.
Wheels
When leaving the production line, the Sonic 27.5 model has 27.5″ aluminum wheels. 27.5″ wheels are a mixture between 29″ wheels and 26″ wheels. However, the overall traction of 27.5″ wheels is lower than 29″ wheels.
Brakes
We ride faster and faster, so a good braking system is essential on a bike nowadays. The Sonic 27.5 comes with 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
This bike is available in 2 sizes. They vary from 140 cm – 173 cm (4.59 ft – 5.68 ft). In conclusion, finding one for you shouldn’t be a problem.