GMC Topkick Dual-Suspension Mountain Bike

I have put together this review to hopefully help you  choose the right product to suit your needs and budget.

I hope you find my review informative and if you have any feedback or even your own personal findings  drop me a comment so that I can add to this review.

Boasting a full-suspension, extra-strong aluminum frame, the GMC Topkick mountain bike is an ideal choice for both trail riding and rough city riding. The frame employs a floating beam suspension design mated to a Zoom suspension fork with elastomer/spring technology. This gives the bike a smooth, steady performance even on rough terrain. The Topkick’s drivetrain, meanwhile, is outfitted with Microshift push shifters that control Shimano’s tried-and-true TZ-30GS derailleur. The drivetrain also offers a strong aluminum wheel set with a V-shape rim profile and high-flange alloy hubs. And to keep you stopping smoothly in any circumstance, the Topkick boasts front and rear Promax disc brakes. Disc brakes are vastly superior to rim brakes, especially under adverse road conditions. True to its GMC roots, the Topkick mountain bike is rugged, good looking, and built for the long haul.

Product Features

• - 21-speed mountain bike features a full-suspension, strong 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
• - Strong aluminum wheelset featuring V-shape rim profile and high-flange alloy hubs
• - Front and rear Promax disk brakes work great, even in adverse conditions

 Specifications:

• Frame: 26-inch full-suspension aluminum MTB frame
• Fork: Zoom CH-386 suspension fork, 65mm travel
• Shocks: Kind Shock, adjustable to 650 pounds
• Chain: KMC Z51
• Crankset: Alloy ISA 335P, 28/38/48, L170mm
• Front derailleur: Falcon MF 31 T
• Rear derailleur: Shimano RD-TZ30GS SIS, 7 speed
• Shifters: Microshift TS-50 ADII index L3/R7
• Brake levers: GP 30 AP aluminum
• Brakes: LCHI DSK-320 disc brakes, 160mm
• Rims: Alloy black 26 x 1.5 inches
• Tires: Kenda black with yellow band 700 x 25C
• Stem: A-head TDS63K-8, EXT: 100mm, 15D
• Handlebar: HL-MTB 153, W: 600mm, R: 30mm
• Saddle: Velo, black padded
• Seat post: Alloy micro-adjust 27.2 x 300mm with quick-release

Satisfied Customer Reviews

cdog –  (Colorado)

This is a good bike – the best feature is the dual suspension. Light and easy dropping off curbs on the way to work – huge difference from my hardtail mountain bike.

Disc brakes are nice to have, on front and rear – work much better than rim brakes. To adjust them hold the brake lever in and tighten them down via a hex wrench on the opposite center of the disc brake until the pads are flush against the disc, then turn back until the brake lever has enough play in it.

The rims are v-shaped, and narrow – much more so than my other bikes. It was quite a job to add tuffy liners to to the tires. I think I will have a bike shop change the tire next time they need it. The hard part is getting the tire off and on those narrow rims. The people at REI said to squeeze on the sides of the tire as you put it on, so both ends go deep into the rim.

Daniel Spitzer “Cop killer” -  (xxx)

This bike is phenomenal, i enjoy riding it AFTER i assembled, i do not reccomend this bike to people who are begginers to the world of Mountain Bikes. I found NO assembly instructions for this bike inside like many others. Luckily i have assembled bikes before. When i opened the bikes packagind it wasnt the best box,I believe it was handled poorly. When assembling the bike i noticed the Disc Brakes took ALOT of tweaking. My rear disc break was not properly fit for the bike, OR shipping bumped it and damaged the rear disc,causing it to bend and mechanical failure. I found myself NOT using the Rear Brakes anymore,it was rubbing on the caliper constatly making a noise and slowing me down. I decided to just take off the top and tie back the wire. I reccomend looking into a more exspensive shipping unless you want bent parts. Its a nice bike, but small things like that make the company look poor in the eyes. So i reccomend looking into an inch smaller Rear Disc Brake. A good bike that needs a little more than assembly. Hope my review helps Customers!!

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