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GMC Topkick Dual-Suspension Mountain Bike Shimano 21-speed index gearing; Dual suspension with 4 bar linkage system; Suspension fork with 90mm travel
Customer Review: Great bike for most users
I purchased this bike because the price was great and it came with dual suspension and front/rear disc brakes. The only problem with the bike is that beginner tuners will have a hard time getting the brakes right as well as the gearing. I paid a shop to get it all right for me, the bike works perfect now.

GMC Denali Girl’s 24-Inch Road Bike This 21-speed road bike features a lightweight aluminum 16″ frame, with alloy calipers and brake levers, high-profile alloy Vitesse racing rims and high performance 700cX24″ tires. It has a Shimano derailleur and Shimano Revo shifters, making it easy to change gears quickly and smoothly.
Customer Review: A great bike if you don’t like to stop.
I bought this bike for my 9 year old daughter. Overall it is a good bike for $[...], however, there are 2 major design flaws I have found already. The braking system is RIDICULOUS for a child of 9-10; perhaps ok for an 11 or 12 year old, but a 9 year old does not have the finger strenght to operate the brakes from the top of the drops, and they can just barely reach the lever when they go down in the drops. Moving from the top riding position, grabbing the brakes and stopping quickly in an emergency is next to impossible and EXTREMELY DANGEROUS if your child hands are not big enough. The other minor flaw is that the handlebar has an adapter to fit the stem, which is cheesy. The correct size stem should have been used, but the manufacture cheaps out on this feature.

GMC Denali Boy’s 24-Inch Road Bike This 21-speed road bike features a lightweight aluminum 16″ frame, with alloy calipers and brake levers, high-profile alloy Vitesse racing rims and high-performance 700cX24″ tires. It has a Shimano derailleur and Shimano Revo shifters, making it easy to change gears quickly and smoothly.
Customer Review: Great Bike for the Price
For the price you can’t beat this. A good sturdy bike, and it rides well. My only complaint is that I had to take it to get adjustments before I could ride it, which was an extra cost.
Customer Review: great value
The bike was easy to put together and rides extremely well. My 12 year old son loves it.