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
fork
GT Hi-Ten Steel, 1" Threaded Steerer
Wheels
front tire
GT 20 x 1.95"
rear tire
GT 20 x 1.95"
Drivetrain
rear cogs
16T Coaster
chain
KMC S1, 1/2x1/8"
crank
Forged One-Piece Type, 127mm, 32T
pedals
Jr. BMX Design, Resin
Cockpit
headset
1" Threaded, Steel
seatpost
Alloy
saddle
GT 1-piece
Fit Guide
- 12" Wheels
-
2'10" - 3'4"
- 16" Wheels
-
3'4" - 4'0"
- 20" Wheels
-
4'0" - 4'5"
- 24" wheels
-
4'3" - 4'8"
- 26" wheels
-
4'3" - 4'8"