GT Grunge 20" Kids Bike 2021

Regular price $300.00
Shipping calculated at checkout.

Only 6 items in stock!

GT Kids' Grunge 20" Bicycle 2021.  The 2021 GT Grunge 20 is a kids bike for the up and coming rider. This model is starting to get some similar features to adult bikes, with an alloy frame designed using the LegitFit system which provides better positioning, easier pedaling, and a faster start to your next ride. While you’ll also get a range of durable alloy components, such as stem, seat post and rims. When your kids are flying around and having a great time on their bike, they’ll need to be able to stop at any moment. For this reason it is equipped with coaster brakes, for the perfect amount of braking power for the little ones, so that they can be kept safe and sound. This bike offers reliability, durability and good looks in one package, perfect for a younger rider.

  • Frame  -  20" GT LegitFit Design, Alloy
  • Fork  -  GT Hi-Ten Steel, 1" Threaded Steerer
  • Chain  -  KMC S1, 1/2x1/8"
  • Crank  -  Forged One-Piece Type, 127mm, 32T
  • Bottom Bracket  -  Steel, Ball Type
  • Pedals  -  Jr. BMX Design, Resin
  • Rims  -  Alloy, 28h
  • Tires  -  GT 20 x 1.95"
  • Front Hub  -  Steel, Nutted Axle
  • Rear Hub  -  Steel, Nutted Axle, Coaster Brake
  • Spokes  -  Stainless Steel, 14g
  • Brakes  -  Coaster Rear, Rear Alloy VBrake
  • Front Brake  -  Coaster Rear, Rear Alloy VBrake
  • Rear Brake -  Coaster Rear, Rear Alloy VBrake
  • Brake Levers  -  Alloy V-type
  • Handlebar  -  Steel Riser Bar, 176mm Rise, 580mm Width
  • Stem  -  2-Bolt Alloy Top, Steel Quill
  • Grips  -  120mm Closed End
  • Headset  -  1" Threaded, Steel
  • Saddle  -  GT 1-piece
  • Spec Extras  -  Fender, Bar, Stem Pad

* Specifications are subject to change without notice

5 Star Reviews

Our order was processed promptly and arrived earlier than promised and in excellent condition. I would not hesitate to order from this vendor again.


Great helmet, and even greater service by these folks @ Alpine East. order arrived a week earlier than expected and they even included a hand written thank you note. they have a new client going forward. thanks guys.