Bicycle Archive · Specification reportBicycle Archive · Specification report2004 GT Power Series Ultra Box · 2003 GT Power Series Ultra Box
| Specification | 2004 GT Power Series Ultra Box | 2003 GT Power Series Ultra Box |
|---|---|---|
| Overview | ||
| Model year | 2004 | 2003 |
| Brand | GT | GT |
| Model | Power Series Ultra Box | Power Series Ultra Box |
| Bicycle type | BMX | BMX |
| Archive ID | 31454 | 38640 |
| Original MSRP | $699.99 | $749.99 |
| Colors | Blue | Avus Blue |
| Sizes | Pro XL | One |
| Frameset | ||
| Frame construction | TIG-welded | TIG-welded |
| Frame material | 6061 T6 aluminum | 6061 T6 aluminum |
| 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 | TruVativ Racing Team, 44 teeth | GT 3-piece chromoly, 44 teeth |
| Bottom bracket | TruVativ GIGA pipe DH | Sealed cartridge |
| BB shell width | 68mm English | Euro |
| Rear cogs | 1-speed, 16 teeth | 1-speed, 16 teeth |
| Chain | KMC Z610HX, 1/2 X 1/8" | KMC Z610HX, 1/2 X 3/16" |
| Pedals | Wellgo clipless | GT BMX Design Aluminum |
| Brakes | ||
| Brakes | Tektro BX-25 rear brakes, Tektro BX-2 rear levers | Tektro BX-25 rear brakes, Tektro BX-2 rear levers |
| Cockpit & contact points | ||
| Headset | 1 1/8" threadless FSA Orbit Z | 1 1/8" threadless FSA Orbit Z |
| Handlebar | GT BMX | GT BMX |
| Handlebar extensions | N/A | N/A |
| Stem | GT Piston | GT Piston |
| Saddle | SDG I-Fly | GT Dropnose |
| Seatpost | SDG I-Fly, 27.0mm diameter | Aluminum micro-adjust, 31.6mm diameter |
| Wheels & tires | ||
| Hubs | GT BMX | GT Rhythm System II |
| Rims | Alex Supra B, 36-hole | GT Rhythm System |
| Spokes | Steel, 14ga. (2.0mm) straight gauge | Stainless steel, 14ga. (2.0mm) straight gauge |
| Spoke nipples | Brass nipples | Aluminum nipples |
| Front tire | 20 x 2.125" IRC Siren | 20 x 2.125" IRC Siren |
| Rear tire | 20 x 1.75" IRC Siren | — |
| Wheel size | 20" wheels | 20" wheels |
Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on November 12, 2026.