The GT Power Series Ultra Box is a bmx bike with an aluminum T6 / GT frame. The frame comes in colors like blue, Avus  Blue and Factory  Blue.

Originally released in 2003, there are 7 versions of this bike. Due to the frame materials and other factors, we estimate that this bike weighs around 25 pounds. The Power Series Ultra Box is fully rigid.


The Power Series Ultra Box comes with various bmx bike components, including an aluminum, forged GT stem and a threadless, integrated, FSA Z headset.


The Power Series Ultra Box is a single-speed and has.


It comes with IRC Siren Kenda tires (20in x 2.125in) and double-wall, tig-welded, Alex Supra, Sun Rhyno Lite XL GT Rhythm System rims.

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Type BMX
Year 2003, 2004, 2005, 2006, 2007, 2008, 2009
Alt. Names PowerSeriesUltra Box, PowerSeriesUltra-Box, Power SeriesUltra Box, Power SeriesUltra-Box, PowerSeries Ultra Box, PowerSeries Ultra-Box, Power Series Ultra Box, Power Series Ultra-Box