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GT Speed Series Pro XL

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About This Product: GT Speed Series Pro XL

The GT 2018 Speed Series is the best way to get your head in the game and your mind on the track with the new lineup of bikes and frames. The lightest aluminum race frame on the market features a race-ready geometry and quick-change dropouts so you are prepared for every condition the day throws your way.


  • Top Tube: 21"
  • Chainstay: 15.43"
  • BB Height: 11.3"
  • Head Angle: 74°
  • Seat Angle: 70°
  • Frame: GT Speed Series MK7 Elite Race Design, 6061-T6 AL, alloy formed & butted speed metal tubes, AL CNC/Forged quick change dropout system, BB86, Taper 1-1/8" to 1.5" integrated HT
  • Fork: Box X5 Pro Carbon 20mm Fork
  • Rims: Speed Series Aero Double Wall, 36H
  • Hubs: GT Speed Series alloy CNC body, sealed bearing, 20mm thru axle front, GT Speed Series cassette, alloy CNC body, 4 sealed bearing, 6 pawl, 72 point alloy Shimano cassette, 3/8" female bolt rear
  • Spokes: 14g
  • Tires: Tioga Power Band 20x1.85, Tioga Power Block 20x1.75
  • Pedals: GT low profile FS platform, pp material, boron axle
  • Crank: GT forged alloy 2-pc, 24mm hollow alloy spindle, 44T AL CNC chainring, AL chainring bolts
  • Bottom Bracket: Sealed BB86
  • Chain: KMC Z610HX
  • Handlebar: GT SPeed Cr-Mo, tapered cross bar
  • Grips: GT Statement Double Lock-on
  • Stem: Promax Impact Top Load
  • Headset: 1-1/8"-1.5" tapered integrated design, 45x45 sealed bearings
  • Brakes: Promax 108mm v-brake cold-forged arms w/ 31mm brake pad
  • Brake Lever: Promax V-point Click lever AL 2 finger lever with reach adjust
  • Seat: Box Echelon
  • Seat Post: Integrated with seat, 27.2x135mm
  • Other: Promax 412QX 31.8mm quick release seat clamp

Complete Bike specifications and components may differ from photos and description. Manufacturers reserve the right to make changes and/or substitutions due to parts availability, production requirements and ongoing development decisions.

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