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2022 Author

Sonic 27.5

A 27.5″ aluminum frame hardtail crosscountry bike with upper mid-range components.

Weight26.9 lbs  
FrameAluminum
SuspensionHardtail, 80mm
ForkRST AERIAL
Wheels27.5″ Aluminum
Drivetrain1 × 10
GroupsetDeore
BrakesTektro Hydraulic Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Sonic 27.5
Other Crosscountry bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

24 mph

Sonic 27.5

27 mph

Similar Bikes

Highest gear

(descending)

Sizing
14"

4'7" – 5'3"

16"

5'1" – 5'9"

Rider Fit Notes

None yet.

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Geometry
Specs
Build
Frame

triple butted hydroformed alloy 6061 27.5"

Color: Red

Fork

RST Aerial 27.5 TnL air, lock out (80 mm)

Travel: 80mm

Spring Type: Air

Stem

AUTHOR alloy

Handlebar

AUTHOR Flat Top bar 9° 620 / 640 mm

Saddle

AUTHOR Champion

Seatpost

AUTHOR alloy (31.6)

Type: Rigid

Pedals

alloy

Grips

AUTHOR kratton rubber

Groupset
Rear Derailleur

SHIMANO Deore

Crank

PROWHEEL 32 teeth 165 / 170 mm cranks

Shifters

SHIMANO Deore (10)

Cassette

SHIMANO M4100-10 11-46 (10)

Chain

KMC X10

Brakes

TEKTRO Auriga disc hydraulic (6" rotors)

Type: Tektro Hydraulic Disc

Wheels
Rims

AUTHOR Xenon TRC 27.5 32 holes

Spokes

black stainless steel 2.0 mm

Front Hub

QUANDO Disc 32 holes

Rear Hub

QUANDO Disc 32 holes

Tires

CST B-Trail aramid 27.5" × 2.25"

Rider Notes
Riders Also Viewed

First added November 2

Last updated November 8

Not listed for 1,298 days