Giant ARX 20

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Why should lightweight performance be limited to adult bikes? This sleek little aluminium flyer is the lightest in its category, and it’s designed with stable geometry that makes it easy for young riders to get going.Most youth bikes are constructed with heavier frames and materials, but we designed the ARX to be lighter, quicker, and more fun for young riders. The fact is, smaller riders can benefit even more from a lighter bike. With its ALUXX aluminium frame and fork, ARX is the lightest bike in its category—which makes it more fun to ride. The frame features a lower centre of gravity for added stability. It has versatile tyres that can handle rough roads, paths and even some dirt. The frame is fitted with lightweight components that are sized specifically for young riders, including cranksets and cockpit components.


High-quality ALUXX aluminium construction delivers exceptional frame performance with lightest weight in its category.

Youth-specific features

Lightweight components for enhanced control and safe, ergonomic positioning and fit.


Comes with tyres that can be ridden on roads, gravel or dirt.


ALUXX Aluminium Technology

This Performance level frame material features 6061 alloy with single-butted tubes to produce strong, lightweight framesets for a variety of different bikes and riding styles.

Sizes one size
Colours Pure Red / Black, Orange / Black, Lemon Yellow / Black, Blue / Black, Neon Green / Black, Purple/Black
Frame ALUXX-Grade Aluminum
Fork ALUXX-Grade Aluminum
Shock N/A
Handlebar Giant Youth, 500mm width
Stem Alloy ahead
Seatpost Giant Sport, 27.2
Saddle Giant Grow Technology
Pedals Platform
Shifters Shimano Altus SL-M315 1X8
Front Derailleur N/A
Rear Derailleur Shimano Altus
Brakes Linear pull
Brake Levers Alloy, junior MTB
Cassette Shimano HG200, 12x32
Chain KMC Z8
Crankset Alloy, forged, three-piece, 32t, 127mm
Bottom Bracket Sealed cartridge
Rims Giant Kids 20"", alloy
Hubs Alloy, Front QR, Rear nutted
Spokes Stainless steel
Tyres Innova IB-3010, 20x1.5""
Colours Lemon Yellow, Neon Green, Orange, Purple
Brand Giant
Model Year 2025
Barcodes 4712878477179, 4712878477216, 4712878477285, 4712878539440
SKUs / Part Numbers 2014020260, 2014020360, 2014020560, 2014020660

Please note: Manufacturers can sometimes change the specification of the products from time to time.

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