2021 GT Grunge 20
Even our kids’ bikes are built right from the ground up – perfectly proportioned lightweight alloy frame, easy-riding low-slung design, and handling that makes every ride a breeze. Durable 1pc cranks, all-terrain tires, 2pc bars and even a numberplate FTW.
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