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2025 Giant

ARX 20

A 20″ aluminum frame general youth bike with modest components and rim brakes.
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Manufacturer Price

€449($522)
FrameAluminum
SuspensionRigid
ForkAluminum
Wheels20″ Aluminum
Drivetrain1 × 8
GroupsetAltus
BrakesRim
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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)

16 mph

ARX 20

18 mph

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Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

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Sizing
One Size

3'11" – 4'8"

Rider Fit Notes

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Price History
Geometry
Specs
Build
Frame

ALUXX-grade aluminium

ColorsPhoenix Fire; Cobalt; Soap Suds; Lime Punch

Fork

ALUXX-grade aluminium

Shock

N/A

Bottom Bracket

sealed cartridge

Stem

Ahead, alloy, 25.4x60mm

Handlebar

Giant Youth, 480mm width, 31.8mm

Saddle

Selle Royal Vivo Jr.

Seatpost

alloy, 27.2mm

TypeRigid

Pedals

platform

Grips

Giant Junior

Groupset
Rear Derailleur

Shimano Altus RD-M310

Front Derailleur

N/A

Crank

alloy, forged, three-piece, 32t, 115mm

Shifters

Shimano Altus SL-M315 1x8

Cassette

Shimano HG200, 12x32

Chain

KMC Z8

Brakes

alloy, linear pull

TypeRim

Brake Levers

alloy, junior MTB

Wheels
Rims

Giant Kids 20", alloy

Spokes

stainless, 14g

Front Hub

Alloy, 24 hole, quick release axles

Rear Hub

Alloy, 24 hole, quick release axles

Tires

Innova IB-3010, 20x1.5"

Rider Notes
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First added July 27

Last updated May 30