MSRP | $159 | $179 | $199 |
---|---|---|---|
Where to Buy | — $1 At | — $1 At | — $1 At |
Category | General Youth | General Youth | General Youth |
Steel | Aluminum | Aluminum | |
Fork | Steel | Steel | Steel |
Wheels | Aluminum | Aluminum | Aluminum |
Wheel Size | 12″ | 16″ | 20″ |
Brakes | Coaster | Coaster | Coaster |
Drivetrain | Single-speed | Single-speed | Single-speed |
Brand Site | |||
Summary | The GT Grunge 12, GT Grunge 16, and GT Grunge 20 are all general youth bikes with coaster brakes. The Grunge 12 has a steel frame and 12″ aluminum wheels, the Grunge 16 has 16″ aluminum wheels, and the Grunge 20 has 20″ aluminum wheels and higher gearing. |
Frame | 12" GT Legit Fit Design, Hi-Ten Steel | 16" GT Legit Fit Design, Alloy | 16" GT Legit Fit Design, Alloy |
---|---|---|---|
Fork | GT Hi-Ten Steel, 1" Threaded Steerer | GT Hi-Ten Steel, 1" Threaded Steerer | GT Hi-Ten Steel, 1" Threaded Steerer |
Bottom Bracket | Steel, Ball type | Steel, Ball type | Steel, Ball type |
Headset | Steel, 1" | Steel, 1" | Steel, 1" |
Stem | 2-Bolt Alloy Top, Steel Quill | 2-Bolt Alloy Top, Steel Quill, 30mm | 2-Bolt Alloy Top, Steel Quill, 30mm |
Handlebar | Steel 460mm width x 130mm rise | Steel 500mm width x 130mm rise | Steel 500mm width x 130mm rise |
Saddle | GT 1-piece | GT 1-piece | GT 1-piece |
Seatpost | Alloy | Alloy | Alloy |
Pedals | Jr. BMX design, resin | Jr. BMX design, resin | Jr. BMX design, resin |
Grips | 92mm closed end | 92mm closed end | 92mm closed end |
Crank | Forged One-Piece Type, 89mm, Steel, 26T | Forged One-Piece Type, 89mm, Steel, 28T | Forged One-Piece Type, 89mm, Steel, 28T |
---|---|---|---|
Cassette | 16T Coaster | 16T Coaster | 16T Coaster |
Chain | 1/2" x 1/8" | 1/2" x 1/8" | 1/2" x 1/8" |
Brakes | Coaster | Coaster | Coaster |
Rims | Alloy, 16 hole | Alloy, 20 hole | Alloy, 20 hole |
---|---|---|---|
Spokes | 14G | ||
Front Hub | Steel, 16 Hole (F) 3/8" Axle, (R) Coaster | Steel, 20 Hole (F) 3/8" Axle, (R) Coaster | Steel, 20 Hole (F) 3/8" Axle, (R) Coaster |
Rear Hub | Steel, 16 Hole (F) 3/8" Axle, (R) Coaster | Steel, 20 Hole (F) 3/8" Axle, (R) Coaster | Steel, 20 Hole (F) 3/8" Axle, (R) Coaster |
Tires | 12 x 2.25" | 16 x 1.95" | 16 x 1.95" |