
GT Bicycles Stomper Ace 24" Kids Bike - 2023
- All Terra suspension fork with 50mm travel
- Powerful Promax mechanical disc brakes
- Shimano Altus 8 speed gears
The Stomper Ace from GT is ready to hit the trails with some great features usually found on adult mountain bikes. With front suspension, disc brakes and Shimano gears this bike has everything kids could ask for and more.
- Improved geometry - GT bikes with the LegitFit system feature geometry adjustments to improve ergonomics for youth statures. The result: Increased stability, comfort and confidence for a wider range of riders.
- Easier pedalling - GT bikes with the LegitFit system have their pedal positions moved slightly forward. The result: Makes it easier to pedal.
- All Terra suspension fork with 50mm travel
- Promax mechanical disc, 160/160mm rotors
- Shimano Altus 8 speed drivetrain
GT has developed a new line of kids’ bikes that utilise its Legit Fit system and are designed specifically for those growing shredders. The Legit Fit system enables GT to build kids’ bikes that have narrower cranks, proper gearing and improved body positioning. All with the benefits of optimising pedalling, balance, and speed right from the start. Even better is that it’s a system that works for kids of all ages, no more needing to “grow into” a bike.
Size Chart:

Brand | GT Bicycles |
MPN | G54201U10OS, G54201U20OS, G54201U30OS |
Frame | 24" GT LegitFit Design, alloy w/ replaceable hanger |
Fork | All Terra, 50mm Travel, 1-1/8" threadless steerer |
Rear Shock | N/A |
Rims | Double wall, w/ machined sidewall, 28h |
Spokes | Stainless Steel, 14g |
Pedals | GT Flat Pedal, resin |
Crank | Prowheel, Pro-V30, 110mm length, 30T |
Bottom Bracket | Cartridge, square taper |
Chain | KMC Z51, 8-speed |
Rear Cogs | Sunrace, 11-34T, 8-speed |
Front Derailleur | N/A |
Rear Derailleur | Shimano Altus |
Shifters | Shimano Altus, 8-speed |
Handlebar | Alloy Riser bar, 30mm rise, 600mm width |
Grips | GT MTB |
Stem | Alloy Ahead, 30mm |
Headset | 1 1/8" Ahead |
Brakes | Promax mechanical disc, 160/160mm rotors |
Brake Levers | Promax |
E-Bike Display | N/A |
E-Bike Battery | N/A |
E-Bike Charger | N/A |
E-Bike Drive Unit | N/A |
Saddle | GT MTB |
Seatpost | Alloy Micro Adjust |
Speeds | 8 |
Sizes Available | One Size |
Fork Travel | (F) 50mm |
Frame Travel |
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