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 | 557 mm | 582 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 | 427 mm | 427 mm |
| Wheelbase | 1059 mm | 1074 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 completes the Author Sonic model. There are 7 bikes that carry this model name.
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 Crosscountry bikes
Our math shows that the average cost of a dependable Crosscountry bike is 1905$. However, this doesn’t mean that if you spend less money on a Crosscountry bike, you couldn’t get a decent one. In conclusion, always check bike reviews and their components before making a purchase to make sure you don’t overpay.
Crosscountry bikes average weight
If we make a quick analysis of the average weight of a Crosscountry bike, we get 12.31 kg (27.14 lbs). It is a good advantage to have a lighter bike than the average. However, a heavier bike is more efficient on descents.
slightly lighter than average, Sonic 27.5 has a weight of 12.2 kg (26.9 lbs). In other words, this model is 0.9% lighter than the average Crosscountry bike.
Overview of components
Fork
The RST AERIAL is included from the factory. It has a travel distance of 80mm. Bike forks are good shock absorbers and provide a smooth ride and a great experience. In conclusion, always look for a fork with decent travel when you buy a bike.
Wheels size
When it comes to wheels, the Sonic 27.5 bike is equipped with the 27.5″ aluminum model. These wheels will provide you with more control over the bike. However, the 27.5″ wheels are less forgiving than the 29″ wheels.
Brakes
For your safety, it is important to have quality breaks on your bike. Author Sonic 27.5 has Hydraulic Disc brakes installed. Hydraulic disc brakes provide amazing stopping power, no matter what the terrain. To sum up, these are ideal for anyone.
Sizes
Sonic 27.5 comes in 2 sizes, that range from 140 cm – 173 cm (4.59 ft – 5.68 ft). In conclusion, finding one for you shouldn’t be a problem.