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$719 RRP

What is my size?

From the driveway to the bike park, the new STP 20 helps young riders build their skills and make the transition from wobbly laps around the block to fun trails and off-road terrain.

With a lightweight aluminium frame, smooth front suspension*, smaller 20-inch wheels and geometry that’s designed specifically for young riders, the new STP can be a first step toward adventures in the dirt. Versatile enough to ride on streets, parks or trails, it offers kids a confident, controlled ride to help them build their skills. The 60mm suspension fork* soaks up bumps, and powerful disc brakes help them negotiate steep descents. It also features kid-friendly components such as shorter reach brake levers and a comfortable saddle. (*on select models)

Key Performance Factors

Versatility For Dirt or street

Lightweight, strong and durable aluminium frameset is designed to go from street riding to bike parks or trails.

Kid-friendly design

Frame geometry is designed specifically for young riders with 20-inch wheels, a low saddle height and taller front end for a stable ride quality.

Maximum control

Powerful disc brakes and plush suspension fork with a lockout option (available on some models) puts maximum control in the rider’s hands.

  • Sizes
    One size
  • Colors
    Trekking Green
  • Frame
    ALUXX grade aluminium
  • Fork
    SR Suntour XCT Jr w/lockout, 60mm travel
  • Shock
  • Handlebar
    Giant Sport Alloy, low-rise, 31.8mm
  • Stem
  • Seatpost
    Alloy, 27.2mm
  • Saddle
    Kids Sport
  • Pedals
  • Shifters
    Shimano Revoshifter, 7sp
  • Front Derailleur
  • Rear Derailleur
    Shimano Altus
  • Brakes
    Tektro HD-J285 hydraulic disc, 160mm
  • Brake Levers
    Tektro HD-J285 hydraulic
  • Cassette
    Shimano HG200, 12x32t, 7sp
  • Chain
    KMC Z7
  • Crankset
    Forged alloy, 30T
  • Bottom Bracket
  • Rims
    Alloy, Disc
  • Hubs
    Alloy disc, 28H
  • Spokes
    Steel, 14g
  • Tires
    Kenda Karma, 20x2.2’’
  • Weight
    The 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.


The new STP 20 kids' bike is built on a lightweight and durable ALUXX frameset with updated geometry to give young riders more confidence and control. It comes with an 80mm suspension fork or rigid fork, and is equipped with disc brakes and grippy, high-volume tires. Here’s a look at some of the key technologies on the STP 20.

STP 20 with interactive tooltips

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.

Selection of a button will change the units measurement displayed throughout the entire sizing guide section.
  • One Size
      115 cm3’9”  to 130 cm4’3”
bike diagram with measurements referenced in table that follows
Selection of a button will change the units measurement displayed throughout the entire sizing guide section.
  One Size
BSeat Tube Angle (degrees)73.0°
CTop Tube Length (mm) (inch)45017.7
DHead Tube Length (mm) (inch)1054.1
EHead Tube Angle (degrees)69.0°
HWheelbase (mm) (inch)88734.9
IChain Stay Length (mm) (inch)36514.4
KStack (mm) (inch)44817.6
LReach (mm) (inch)31312.3
PCrank Length (mm) (inch)1275

Technologies & Features

ALUXX Aluminum Technology

All specifications listed are subject to change without notice.