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ARX 16




What is my size?



Why should lightweight performance be limited to adult bikes? This sleek little aluminium flyer is the lightest in its category, designed with stable geometry and 16-inch wheels that make 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. 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 center of gravity for added stability. It comes in three different wheel size choices for different heights, and 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 for various wheel options.

Key Performance Factors


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

Youth-specific features

16-inch wheels and lightweight components offer better control and safe, ergonomic positioning and fit.


Versatile tyres can be ridden on roads, gravel or dirt.

Sizesone size
ColoursLemon Yellow/Black, Pure Red/Black, Orange/ Black, Blue/Black, Neon Green/Black, Purple
FrameALUXX-Grade Aluminum
HandlebarGiant Youth, 50mm rise, 480mm width
Stemsteel, quill
Seatpostalloy, 27.2
SaddleGiant Grow Technology
Front DerailleurN/A
Rear DerailleurN/A
Brakesalloy, linear pull
Brake Leversalloy, junior MTB
ChainKMC C410
Cranksetalloy, forged, three-piece, 28t
Bottom Bracketsealed cartridge
RimsGiant Kids 16", alloy
Hubsalloy, F/R 20/20h
Spokesstainless, 14g
TyresInnova IA-2084, 16X1.5
Extraschain cover
WeightThe most accurate way to determine any bike’s weight is to have your local dealer weigh it for you. Many brands strive to list the lowest possible weight, but in reality weight can vary based on size, finish, hardware and accessories. All our bikes are designed for best-in-class weight and ride quality.

All specifications listed are subject to change without notice.

Sizing Guide and Geometry

Sizing to be used as a reference only. Please check with a local authorized Liv or Giant dealer to determine the correct size.
Available sizes may vary from country to country.

  • One Size
      105 cm3’5”  to 125 cm4’1”
bike diagram
  One Size
Seat Tube Angle (degrees)72.0°
Top Tube Length (mm) (inch)38015
Head Tube Length (mm) (inch)1104.3
Head Tube Angle (degrees)71.0°
Wheelbase (mm) (inch)74029.1
Chain Stay Length (mm) (inch)31612.4
Stack (mm) (inch)33813.3
Reach (mm) (inch)27010.6
Stand Over Height (mm) (inch)38515.2
Crank Length (mm) (inch)893.5

Technologies & Features

ALUXX Aluminum Technology

All specifications listed are subject to change without notice.