GT Ultrabox
GT Bicycles is a large American manufacturer of road, mountain, and BMX bicycles. The company was founded in 1979 by Gary Turner, a welding engineer and Richard Long, a bike shop owner. The company merged with Schwinn in 1998, but the conglomerate went bankrupt in 2001, and was acquired by Pacific Cycle. Dorel Industries acquired Pacific Cycle in 2004. Early BMX frames were easily identifiable as the top tube seemed to dissect the seat tube and protrude beyond it by approximately an inch-and-a-half towards the rear of the frame. This innovative idea actually provided no structural performance, but did seem to be aesthetically pleasing to the overall design. Later versions would actually have the customary "GT" letters stamped on the end of the protruding tube. The company has equipped many successful athletes, including: Thomas Allier, Robert Dewilde, Randy Stumpfhauser,...

The new Ultrabox still has the same frame as the previous years.


Pro:

  • Pretty cheap for a quality bike

  • Light weight bike
  • Contra:

  • The fork bents easily from what we have heared
  • Specifications:


    Color(s):

    Blue/Black two tone


    Size(s):

    20" wheel / 21" top tube


    Frame:

    GT Ultra Box design, 6061-T6 aluminum, formed top tube and chain stays, Euro (small) BB shell, 1-1/8" Semi integrated head tube


    Fork:

    GT BMX design, Aluminum crown and blades, cr-mo 1-1/8" steer


    Crankset / Chainwheel:

    Truvativ 180mm "Racing Team" forged AL-7050 aluminum, 44T CNC AL-7075 chainring


    Bottom Bracket:

    Truvativ GIGA Pipe DH, ISIS drive, cartridge bearings, aluminum cups


    Pedals:

    GT design, CNC aluminum platform, CNC cr-mo axle, sealed bearings


    Freewheel:

    14, 15, 16T cogs


    Chain:

    KMC Z610HX


    Rims:

    Sun Rhyno Lite XL, welded double wall with eyelets, 36 hole, 29mm width


    Tires:

    Kenda Small Block Eight, 60tpi casing, 1.75" rear, 2.1" front


    Front Hub:

    GT BMX branded, aluminum body, Sealed Bearings, Hollow Cr-Mo axle, Track nuts


    Rear Hub:

    BMX race design cassette, 4x JP sealed cartridge bearings, 36 hole, hollow Cr-Mo axle, double FW threads


    Spokes:

    14G, Black


    Nipples:

    Aluminum, 14 G, Black


    Front Brake:

    Alloy side-pull caliper


    Rear Brake:

    Tektro, BX-25, cold forged aluminum, cartridge pads


    Brake Levers:

    Tektro, BX-2 "Sabre", hinged clamp, aluminum


    Handlebar:

    GT BMX Race bend, Cr-mo, 7.9" rise


    Stem:

    '05 GT BMX Race design, cold forged aluminum


    Grips:

    GT Dual Compound race design


    Headset:

    FSA "ORBIT Z", semi integrated design, aluminum cup, angular contact sealed cartridge bearings


    Saddle:

    SDG "I-Fly" railess design, stitched cover


    Seat Post:

    SDG "I-Fly" aluminum micro adjust design


    Seat Clamp:

    Integrated in frame


    Extras:

    GT design CNC machined chain tensioners, 3 piece pad set