Product Details

• Amazon Sales Rank: #112563 in Sports & Outdoors
• Color: Silver/Red
• Brand: GMC
• Model: 62712
• Dimensions: 7.50" h x 30.00" w x 51.00" l,

Features

• 21-speed road bike features a 6061 aluminum frame and fork
• Outfitted with an array of alloy components to help minimize weight and reduce road vibration
• Shimano Revo Twist Shifters boast precise movement and light action
• Provides easy low gear ratios via a triple gear crankset up front, and broad seven-speed Shimano gearing in the back
• Light and strong alloy wheelset features V-profile rims

Amazon.com Product Description
The GMC Envoy 700C 21-Speed Road Bike is a lightweight road-racing-style bicycle featuring a 6061 aluminum frame and fork. This bike is outfitted with an array of alloy components to help minimize weight and reduce road vibration. The Shimano Revo Twist Shifters boast precise shifts and light action. To increase pedaling efficiency, the Envoy is outfitted with toeclip pedals. And to conquer the toughest hills, this bike provides easy low gear ratios via a triple gear crankset up front, and broad seven-speed Shimano gearing in the back. The Envoy rolls on a light and strong alloy wheelset featuring V-profile rims with precision braking surfaces, alloy hubs, and Kendra tires with color matched trim. Lastly, this road bike will help you stay hydrated with the included alloy water bottle cage.

GMC Envoy 700C Road Bike Specifications

• Frame: Aluminum 6061 double butted tubing
• Fork: GMC aluminum series 7000
• Headset: Cane Creek-11/8
• Chain: KMC Z 51
• Crankset: WAC Alloy 521A 24X34X42 170mm
• Front Derailleur: Shimano FD-TZ 30
• Rear Derailleur: Shimano Tourney RD-TX30GS 7SPD
• Shifters: Shimano Revo SIS L2/R7
• Brake Levers: CS 206A aluminum
• Brakes: CS AS4.0 alloy caliper brake
• Rims: Vitesse alloy silver 700CX18GX24H
• Tires: Kenda black with red band 700X28C
• Stem: A-Head aluminum silver EXT:90mm -7D
• Handlebar: Maesbend W: 430mm D:25.5mm
• Sadle: Vitesse Pro black/white
• Seat Post: HL aluminum micro adjust 27.2 X 300mm
• Pedals: VP-390 with toe clip
• Weight: 26.0 pounds

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

Customer Reviews

Lemon
I Purchased a GMC envoy 700c in July and it seemed great when it was working but it never did for very long. The first thing that happened was both brake calipers falling apart followed by a brake pully snapping and then the other brake pully snaped. Then I noticed that The rear derailer no matter how it was adjusted would not function properly. I brought it to a bike shop and they descovered that the derailer cables were incorrectly installed as well as a flaw on the rear of the frame where the bike tire and rear derailer attached to the bike. As long as you dont get a incorrectly welded frame and are willing to replace brake calipers this bike should be ok for some one wanting a economy road bike.

Nice Road Bike
I am really pleased with this bike. It functions good for the price range. I have taken it on multiple 20+ mile rides, and I have only one complaint. The front deraileur constantly makes noise. I have tried to adjust it, with no luck. I have taken it to a bike shop, however, I don't think that they knew how to fix it. So, I have to place the front gear selector beyond the point that it was designed to go in order to quiet the noise. This is annoying because at times, it slips back into place, causing the noise to come back.

Other than that, GREAT BIKE!!!! If you are interested in the sport, but do not want to spend $1000.00 + on a road bike before you know what the sport is about, this is the bike for you. Try it out, and then decide what you want when you invest more money into a high end road bike.

Please do not buy this bike!
I have seen many of these bikes around town, and all have been in very poor working order. This bike is designed to have the looks of a nice racing bike, but has none of the technology that goes into a decent bike to make it safe and longlasting. The brake calipers are flimsy, and should not be installed on a bike that is designed for the road. Also, the wheels are cheap and easily go out of true. If you do not have the skill to true them, you will have to shell out a good percentage of the original price to get them working correctly. The handlebar is cut in half to install the shifters and then welded back together. There is a lot of force on the handlebar of a bike, from holding your weight, forces when standing, and pulling on the bar. To cut a handlebar severely damages the integrity of the part, even if it is welded back together. Now while at first I had respect GMC for making a road bike that is low cost to let people try road biking, once I saw the bike I was shocked. The bike is not safe to be ridden. I also decided to go to a wal-mart and see one of these bikes for myself. The bike was in very poor working order. The breaks were making contact with the tires, the headset was loose, the seatpost wasn't tightened down, the derailleur hanger was bent in. The bottom line here is do not buy this bike, it is not safe. If you are interested in getting into road biking and think this bike is a good decision, realize that the money you will put into it to get it to work will not be worth it in the long run. You can purchase road bikes on craigslist and ebay for 200 if you look good enough for long enough. If you're only looking to put 100 into starting road biking, then now is not the time for you to start. If you would like further info on looking for bikes or why this bike is dangerous, please contact me: hewittd@unc.edu.