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Features 21 speeds and a floating beam suspension design for mountain biking. It features an aluminum frame.

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The suspension design helps soften bumps and shocks of off-road terrain

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The disc brakes are better on a mountain bike than rim brakes

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The suspension can handle small bumps, but can’t really handle larger jumps and roots

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The derailleur is not good enough quality to handle off-roading

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The GMC Topkick Dual-Suspension Mountain Bike has 21 speeds and a floating beam suspension design for mountain biking. It features an aluminum frame, a Shimano TZ-30GS derailleur and drivetrain. It is stopped with Promax disc brakes. This bike is 52 by 27 by 7.5 inches and it weighs 45 pounds. 

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Features and Specifications

  • 21-speed mountain bike features a full-suspension, aluminum frame
  • Floating beam suspension design is mated to a Zoom suspension fork with elastomer/spring technology
  • Microshift push shifters and Shimano TZ-30GS derailleur
  • Aluminum wheelset featuring V-shape rim profile and high-flange alloy hubs
  • Front and rear Promax disk brakes work great, even in adverse conditions
  • Frame - 26-inch full suspension aluminum MTB frame
  • Fork - Zoom CH-386 suspension fork 65mm travel
  • Shocks - Kind Shock adjustable 650 pounds
  • Crankset - Alloy ISA 335P 28x38x48 L170mm
  • Seat Post - Alloy micro adjust 27.2 X 300mm with quick-release
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Picking the Right Bike

When choosing a bike, you need to focus on a few factors. 

The Type
You can pick between mountain bikes, road and racing bikes, and cruiser bikes. A mountain bike is designed to ride well on pavement and on off-road terrain. They have large tires, an upright position and gears that can handle hills. Specialized ones that are made specially for off-roading usually have a suspension fork. 

The Price
The price will give you different features, so you should choose based on your needs. A beginner level bike will usually be made from steel and be made to last for a few years. A mid-level bike will generally be made of aluminum and made to last longer. This range is a good choice for most people. If you are a more serious rider, you would probably want a high-end bike made with specialized materials like carbon fiber or titanium and with specialized features. 

The Size
To pick the right size, you would determine by the stand-over height and the top tube length of the bike. If you are a woman, you can find bikes that are smaller and designed just for women. 

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