GT 20 Stomper Prime

GT 20 Stomper Prime


Regular price $449.00 Sale

Available on orders over $40. Collection in 1-7 days. More info »

The GT Stomper Prime 20 is the ultimate kids mountain bike for the active kid that isn't quite ready for a full size adult mountain bike. GT made this bike to be durable, versatile and ready for the most active kids aged 6-9. It is built with a GT Legit Fit System alloy frame which is lightweight and tough, yet offers the perfect fit for smaller riders. It enables kids to ride in comfort and ride the bike as intended, even if they're on the smaller side. While the GT Hi-Ten Steel offers reliable performance for a range of surfaces.

This bike is the bridge between youth and adult bikes, rolling on Kenda 20x2.1" tyres, with durable double wall rims which come in handy on some rough tracks. Everything is finished off with quality parts, such as an alloy seatpost and stem, as well as Shimano Revo Twist Shifter for small hands. While the GT V-brakes offer reliable stopping power for the youth rider that might be adjusting to the potential of a 20" bike. The GT Stomper Prime 20 is a high-quality youth mountain bike that doesn't break the bank or compromise on safety or quality. This bike offers reliable fun for years to come.


  • GT Legit Fit System: Better Positioning, Faster Starting and Easier Pedaling
  • Shimano Revo Twist Shifter For Small Hands
  • Alloy Seatpost and Stem
  • Kenda Small Block Eight 20x2.10" tyres




Wheel Size 20"
Frame Material Alloy
Fork Material Steel
Brake Type V-Brake
Bottom Bracket Cartridge, square taper
Brakes GT V-brake
Brake Levers Alloy
Cassette Sunrace, 14-28, 6-speed freewheel
Chain KMC Z51, 7-speed
Crankset Prowheel, Pro-V30, 110mm length, 30T
Derailleur Rear Shimano Tourney
Fork GT Hi-Ten Steel, 1-1/8" threadless steerer
Frame 20" GT LegitFit Design, alloy w/ replaceable hanger
Grips GT MTB
Handlebar Steel Riser bar, 20mm rise, 540mm width
Headset 1 1/8" Ahead
Hubs Freewheel, QR
Pedals GT Flat Pedal, resin
Rims Double wall, w/ Machined Sidewall, 28h
Saddle GT MTB
Seatpost Alloy Micro Adjust
Stem Alloy Ahead, 30mm
Shifters Shimano Revo Twist Shifter For Small Hands, SL-RS36, 6-speed
Tyres Kenda Small Block Eight, 20 x 2.1"
Kids Bike Sizing 20 Inch