GMC Topkick Dual-Suspension Mountain Bike From GMC

GMC Topkick Dual-Suspension Mountain Bike From GMC List Price: $299.99 Price: $249.66 & eligible for FREE Super Saver Shipping on orders over $25. Details Availability: Usually ships in 24 hours Ships from and sold by Amazon.com 2 new or used available from $249.66 Average customer review:

Product Description

Mens GMC Topkick 26" Dual suspension Bike with Shimano 21 speed index gearing~ For any service questions contact Kent at 1-800-451-KENT (5368) EST., for replacement parts, repair kits, tools and warranty information (or) www.services@kentbicycles.com

Product Details

• Amazon Sales Rank: #9082 in Sports & Outdoors
• Size: 26"
• Color: Black
• Brand: GMC
• Model: 72670
• Dimensions: 7.50" h x 27.00" w x 52.00" l,

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

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Editorial Reviews

Amazon.com Product Description
The GMC Topkick 21-Speed Mountain Bike features a full-suspension, strong aluminum frame that utilizes a floating beam suspension design that is mated to a Zoom suspension fork with elastomer/spring technology. The Topkick's drivetrain starts with Microshift push shifters. These shifters control Shimano's tried and true TZ-30GS derailleur. The drivetrain finishes up with a strong aluminum wheelset featuring V-shape rim profile and high-flange alloy hubs. Stopping is handled by Promax disk brakes on the front and rear. These brakes are vastly superior to rim brakes, especially under adverse road conditions. True to it's GMC roots, this bicycle is rugged, good looking, and built for the long haul.

GMC Topkick Mountain Bike Specifications

• Frame: 26-inch full suspension aluminum MTB frame
• Fork: Zoom CH-386 suspension fork 65mm travel
• Shocks: Kind Shock adjustable 650 pounds
• Chain: KMC Z 51
• Crankset: Alloy ISA 335P 28x38x48 L170mm
• Front Derailleur: Falcon MF 31 T
• Rear Derailleur: Shimano RD-TZ30GS SIS 7SPD
• Shifters: Microshift TS-50 ADII index L3/R7
• Brake Levers: GP 30 AP aluminum
• Brakes: LCHI DSK-320 disk brake 160mm
• Rims: Alloy black 26-inch X1.5
• Tires: Kenda black with yellow band 700X25C
• Stem: A-head TDS63K-8 EXT:100mm 15D
• Handlebar: HL-MTB 153 W: 600mm R:30mm
• Sadle: Velo black padded
• Seat Post: Alloy micro adjust 27.2 X 300mm with quick-release

Amazon.com Bicycle Buying Guide
Finding the Right Bike
To really enjoy cycling, it's important to find a bicycle that works for you. Here are some things to keep in mind when you're in the market for a new bike:

The Right Ride
In general, bikes are broken down into three major categories:

• Road and Racing Bikes--As a general rule, road and racing are built for speed and longer distances on paved surfaces. Thinner tires, lightweight 29-inch (700c) wheels and drop bars that allow for a more aerodynamic position are the norm. Most road bikes, regardless of price, offer many gears for tackling both hilly and flat terrain.
• Mountain Bikes--With their larger tires, hill-friendly gearing and upright position, mountain bikes are very popular for all types of riding, both on pavement and off. Mountain bikes that are designed specifically for rugged trail use typically feature a suspension fork. Some may have rear suspension, as well. A quick change of the tires on any mountain bike--even one that you use regularly on trails--adds to its versatility and makes it a worthy street machine.
• Comfort/Cruiser Bikes--For tooling around on bike paths, light trails, or for cruising a quiet beach-side lane, comfort/cruiser bikes are the ticket. With a super-relaxed riding position, padded seats, and limited or no gearing, these bikes are made for enjoying the scenery and having fun with the family.

The Right Price
A bike's price boils down to three essentials: frame materials, bike weight, and component quality and durability.

• Entry-level--You'll find a wide range of comfort and cruiser bikes in this category, as well as some lower-end mountain bikes and road bikes. Most will have steel frames and components that are designed to last for several years with frequent use.
• Mid-range--Bikes in this range may feature a lighter aluminum frame with mid-range components that keep performing after miles of use. If you're looking for a quality bike that is relatively lightweight and will stand up to abuse, this is the "sweet spot." Most serious commuter and touring bikes fall into this category, as do mid-range mountain bikes with a decent front suspension.
• High-end--Racers and serious enthusiasts who expect lightweight, high-performance components will want to stick to this category. For road bikes, exotic frame materials (carbon fiber, titanium) and ultra-lightweight components can add thousands to the price tag. Mountain bikes in this class often feature advanced front and rear suspension technology, as well as components designed to handle lots of rugged trail action.

The Right Size
Fit is crucial for comfort, control, and proper power and endurance on a bike. Here are some basic bike fit tips:

• Stand-over Height--To find out if a bike's overall height fits your body, measure your inseam. Next, determine how much clearance you'll need between your crotch and the top tube of the bike. For a mountain bike, you'll want three to five inches of clearance. A road bike should offer between one and two inches of clearance, while a commuter bike should have two to four inches. Compare the stand-over height for a given bike to your measurements (inseam + clearance) to determine the right bike height.
• Top Tube Length--You can measure your torso to get a good estimate of proper top tube length. First, make a fist and extend your arm. Measure from the center of your fist to the end of your collarbone (the part that intersects your shoulder). Next, measure your torso by placing a book against your crotch with the spine facing up. Measure from the spine to the bottom of your throat (the spot between your collarbones). Finally, add the two measurements (arm length + torso length), divide the number in half and subtract six inches. This is your approximate top tube length. Compare this number to a bike's posted top tube length. You can allow for about two inches longer or shorter, as most bikes can be adjusted via stem length/height and saddle fore/aft position to make fine adjustments to the fit.
• Bikes for Women--Proportionally, women tend to have a shorter torso and longer legs than men. Bike makers design women's bikes that offer a shorter top tube and many comfort/cruiser bikes built for women may also provide more stand-over clearance.

The Right Accessories
When you make a bike purchase, don't forget these crucial add-ons:

• Helmet (this is a must!)
• Seat pack
• Lock
• Hydration pack, or water bottles and bottle cages
• Spare tubes
• Portable bike pump
• Gloves

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Customer Reviews

Good quality, good price
I got this bike for my husband for his birthday. I put it together in about 2 1/2 hours myself, and test rode it, seems to be working well. The toughest thing was adjusting the disc brakes, which I had never done before. I found it easier to adjust like this: loosen all four bolts holding the caliper assembly on, then lock the brake, tighten the two bolts attaching the assembly, release the brake, spin the tire while manually fine-tuning the position of the pads while looking head-on to see a little daylight on each side of the disc and hear no rubbing, then tighten the remaining two bolts a little at a time while maintaining the position of the caliper by hand. I also had to tweak the inside pad 1/4 turn counter-clockwise, but it worked well! Just need to see how my hubby likes it. The bike looks great, but is heavy. I will try to update this after he's ridden the bike for a bit.

Rear brake always grips the wheel
The rear disc disc brake was found to always touch the disk, slowing down the bike quickly. Loosing the brake pad to make some space resulted in rear brake not functioning. An enclosed manual was very poor in its content, so I could not figure out how to resolve this problem. Very disappointed. I am going to return it.

Rare Inner Tubes...
First, based on my experience, don't rely on the specifications posted here for the GMC Topkick Dual-Suspension Mountain Bike; actual parts used and their specifications may vary. Kent does not publish the same specifications.

Second, the original inner tubes for this bike are short on MTB durability and replacements are rare. The tubes on mine have a 48mm or "Long" Schrader valve stem rather than a standard length Schrader, which will not extend through the deep-v rim used on this bike. You can order replacements directly from Kent, use a Schrader valve extension, or convert to inner tubes with 48mm Presta stems.

In a little over three months of ownership, various components and assemblies have needed repair or replacement, including the inner tubes, pedals, brake discs, hub, and cables. Kent International has been very courteous in my dealings with them.