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GT Grade Alloy 105 Complete Road Bike - 2017

Sale $1,147.49 $1,349.99 15% off

Item # GTE0021

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  • Gun/Chameleon, 58cm ($1,147.49)
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Item # GTE0021

Up for anything.

It's becoming easier and easier to buy a bike that isn't just designed for one specific discipline within cycling, and the fact that aluminum has remained relevant through the rise of carbon has only served to make these new, versatile frames more accessible. When GT fuses the lightweight, responsive material with its endurance road designs, you get a bike that's dependable and ready to go anywhere at a price that won't send your bank account fleeing for the hills. GT's Grade Alloy 105 Complete Road Bike combines the best of road-ready geometry with the off-road spirit GT is known for to create a bike that's comfortable on a wide range of terrain.

GT uses its iconic Triple Triangle design to take advantage of aluminum's innate stiffness, and alleviates the harshness aluminum is known for by using its Grade carbon fork to dampen chatter. The peculiar seatstay design serves to keep road vibrations from traveling directly up the seat post. Stiffer seatstays also improve the Grade Alloy's acceleration whether you're navigating stoplights in town or pedaling hard uphill through gravel. GT expects you to take this bike off-road, so it designed the frame with extra tire clearance to accommodate knobby tires for exploring trails and light singletrack, as well as a low bottom bracket height to add stability on uncertain surfaces.

Staying with the frame's theme of rock-solid, affordable materials, GT outfits the Grade Alloy with an 11-speed Shimano 105 drivetrain to provide clean, consistent shifting. The Shimano 105 levers control brake levers control the reliable TRP Hyrd mechanical/hydraulic disc brakes, which are becoming increasingly common on road bikes, and the blend of mechanical and hydraulic controls makes them easier to maintain yourself. GT includes an FSA Omega Vero Compact crankset on the Grade Alloy, which offers a wide range of gearing to adapt quickly whether you're riding at tempo on the flats or trying to keep your cadence up on a steep grade.

  • GT's versatile Grade goes aluminum
  • Enduroad geometry blends long-mile comfort and all-road ability
  • Aluminum construction balances weight, stiffness, and price
  • Carbon fiber fork absorbs road vibrations
  • Triple Triangle design boosts comfort out back
  • Shimano's workhorse drivetrain provides precise gear shifts

Tech Specs

Frame Material:
Grade Carbon
Fork Material:
carbon fiber
integrated TH sealed bearing
Shimano 105 STI 11-speed
Front Derailleur:
Shimano 105
Rear Derailleur:
Shimano 105
50/34t FSA Vero Compact alloy
Bottom Bracket:
sealed cartridge
11-32t Shimano 105 11-speed
Brake Type:
mechanical to hydraulic disc
New GT DropTune Super Light double butted 6061 alloy w/ 16° flair
Bar Tape:
Velo Cork
GT Design 3D forged 6061, 7° rise
GT Grade
One Bolt Aluminum
Alex ATD470 disc
Formula Ultralight 6-bold disc
Front Axle:
Rear Axle:
Schwalbe Road Cruiser K-Guard
Tire Size:
Recommended Use:
cycling, gravel
Manufacturer Warranty:

sizing chart

Grade size by rider height


Geometry chart


Geometry Chart


Grade X/105/Tiagra/Claris

Seat Tube


Effective Top Tube






Stand Over

Head Tube


Head Tube Angle


Seat Tube Angle


Bottom Bracket Drop




51cm 49.5cm 51.5cm 53.4cm 36.7cm 74.2cm 12.1cm 69o 74.5o 7cm 43cm 101.7cm
53cm 53.5cm 53.5cm 55.7cm 37cm 77.2cm 14.2cm 70o 73.5o 7cm 43cm 101.9cm
55cm 55cm 55cm 57.8cm 37.3cm 78.6cm 16.2cm 70.5o 73o 7cm 43cm 102.5cm
56cm 56cm 56.5cm 60.1cm 38.1cm 80cm 18.2cm 71.5o 73o 7cm 43cm 103.1cm
58cm 60.5cm 58cm 62.7cm 38.2cm 82.9cm 20.7cm 72o 72.5o 7cm 43cm 103.5cm
60cm 63.5cm 60cm 65cm 38.9cm 84.3cm 23.1cm 72o 72o 7cm 43cm 104.9cm

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