Bicycle Archive · Specification reportBicycle Archive · Specification report2001 GT Fly · 2004 GT Fly
| Specification | 2001 GT Fly | 2004 GT Fly |
|---|---|---|
| Overview | ||
| Model year | 2001 | 2004 |
| Brand | GT | GT |
| Model | Fly | Fly |
| Bicycle type | Freestyle/jumping | Freestyle/jumping |
| Archive ID | 35484 | 31428 |
| Original MSRP | $309.99 | $199.99 |
| Colors | Starlight Blue, Taupe | Blue, Yellow |
| Sizes | Pro | One |
| Frameset | ||
| Frame construction | TIG-welded | TIG-welded |
| Frame material | Chromoly | Chromoly down tube/hi-tensile steel |
| Fork | GT | GT |
| Fork material | Chromoly, unicrown crown | Chromoly, unicrown crown |
| Rear shock | N/A | N/A |
| Drivetrain | ||
| Component group | N/A | N/A |
| Shifters | N/A | N/A |
| Front derailleur | N/A | N/A |
| Rear derailleur | N/A | N/A |
| Crankset | GT 1-piece chromoly, 44 teeth | GT one-piece, 39 teeth |
| Bottom bracket | One piece | — |
| BB shell width | — | American |
| Rear cogs | 1-speed, 16 teeth | 1-speed, 16 teeth |
| Chain | KMC, 1/2 x 1/8" | KMC Z410, 1/2 x 3/16" |
| Pedals | GT aluminum platform | GT BMX Design Aluminum |
| Brakes | ||
| Brakes | Tektro 906A U-brake rear brakes, Tektro 287A rear levers | Tektro 907A U-brake rear brakes, Tektro 289A rear levers |
| Cockpit & contact points | ||
| Headset | 1 1/8" threadless Tange Seiki STE | 1 1/8" threadless Victor VP-A74F w/SST Oryg |
| Handlebar | GT Expert BMX | GT BMX |
| Handlebar extensions | Not included | N/A |
| Stem | GT Piston | GT Piston |
| Saddle | GT | GT Jr Jump, 9mm rails |
| Seatpost | GT aluminum micro-adjust | Aluminum, 25.4mm diameter |
| Wheels & tires | ||
| Hubs | GT Mohawk | Steel, nutted |
| Rims | Alex X-303, 48-hole | Jalco, 36-hole |
| Spokes | 14g | Stainless steel, 14ga. (2.0mm) straight gauge |
| Spoke nipples | Brass nipples | Brass nipples |
| Front tire | 20 X 2.10" GT LP-III | 20 x 2.20" GT 1453 |
| Rear tire | — | 20 x 2.10" GT LP-4 |
| Wheel size | 20" wheels | 20" wheels |
One selected size or frame position per bicycle, matching the comparison dropdown choices used when Print / PDF was opened.
| Measurement | 2001 GT Fly | 2004 GT Fly |
|---|---|---|
| Selected size / position | — | Legacy reference |
| Head-tube angle | — | 74.5° |
| Seat-tube angle | — | 71° |
| Chainstay / rear center | — | 355.6 mm |
Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on November 12, 2026.