2020 GT

Grunge 20"

A 20″ aluminum frame general youth bike with coaster brakes.
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MSRP$250
FrameAluminum
SuspensionRigid
ForkSteel
Wheels20″ Aluminum
DrivetrainSingle-speed
BrakesCoaster
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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

Grunge 20"

18 mph

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Highest gear

(descending)

99 Spokes on YouTube99 Spokes on YouTube
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 Riser bar, 176mm rise, 580mm width

Saddle

GT 1-piece

Seatpost

Alloy

TypeRigid

Pedals

Jr. BMX design, resin

Grips

120mm closed end

Groupset
Crank

Forged One-Piece Type, 127mm, 32T

Cassette

16T Coaster

Chain

KMC S1, 1/2x1/8"

Brakes

Coaster rear

TypeCoaster

Wheels
Rims

Alloy, 28h

Spokes

Stainless Steel, 14g

Front Hub

Steel, Nutted axle

Rear Hub

Steel, nutted axle, coaster brake

Tires

GT 20 x 1.95"GT 20 x 1.95" GT 20 x 1.95"

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Last updated February 21
Not listed for 1,491 days