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2018 GT

Siren Coaster 20"

A 20″ aluminum frame general youth bike with coaster brakes.
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Manufacturer Price

$199
FrameAluminum
SuspensionRigid
ForkSteel
Wheels20″ Aluminum
DrivetrainSingle-speed
BrakesCoaster
View on gtbicycles.comLearn about GT
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Insights
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)

12 mph

Siren Coaster 20"

18 mph

Similar Bikes

Highest gear

(descending)

Specs
Build
Frame

20" GT LegitFit Design, Alloy

Fork

GT Hi-Ten Steel, 1" Threaded Steerer

Bottom Bracket

Steel, Ball type

Headset

Steel, 1"

Stem

2-Bolt Alloy Top, Steel Quill

Handlebar

Steel 580mm width x 176mm rise

Saddle

GT 1-piece

Seatpost

Alloy

Type: Rigid

Pedals

Jr. BMX design, resin

Grips

120mm closed end

Groupset
Crank

Forged One-Piece Type, 127mm, 32T

Cassette

16T Coaster

Chain

KMC Z410A, 1/2" x 1/8"

Brakes

(F) N/A, (R) Coaster, Rear: (F) N/A, (R) Coaster

Type: Coaster

Wheels
Rims

Alloy, 28 Hole

Front Hub

(F) Steel, 28 Hole, 3/8" Axle, (R) Steel, 28 Hole, Coaster

Tires

GT 20 x 1.95" (F/R)

Rider Notes
Riders Also Viewed

First added July 20

Last updated July 20

Not listed for 2,870 days