Discount Sale GMC Topkick Dual-Suspension Mountain Bike

455Last Week - Viewed 235
  • Discount Sale GMC Topkick Dual-Suspension Mountain Bike  รูปที่ 1

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

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.

Elswick Blackcreek Boys, Feral Punch Boys BMX, Silverfox Turmoil Front, BLACK RUSSIAN H/T , Viking Prestige 18sp, Halcyon Camino 700C, Octane Velocity Mens Road, Raleigh AT10 , Boss Savage Men's Bike, bike*star 25.4cm, Mizani Aero Sprint, Townsend Mohawk 24, Raleigh Chopper Neon, Viking Vitesse Ladies, Flite Maniac Boys, Kingston Mayfair Ladies, Indy Chrome Trainer, bike*star 25.4cm, Reebok Melody Girls Bike, Raleigh BMX Bike 20, Raleigh Womens Hybrid, Haro 300.2 BMX, Raleigh Krush 20", Flite Panic Mag Boys, Raleigh City Limits, Raleigh Pursuit Men's , Raleigh Waterfront Bike, Dawes Men's 700c, MX14 14" Kids Bike, Exodus Grind Alloy, Raleigh Trail XC24, Ladies Silverfox Crave, Raleigh XTREME 20.1 , Viking Giro D'Italia 14, Coyote Men's Nebraska, Raleigh Spirit Womens, Micro Light Blue


  • 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
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.
Viking Keswick Gents, Alloy Dual Suspension, Viking Urban Fixed, Raleigh Krush 16w, Diamondback Outlook, Gents 26" Alloy, Concept Spider 16", Piranha Catch 22, Diamondback Ridge Men, Raleigh Molly 12", Hello Kitty Pink 12, AMMACO SUBURBAN BLACK, Cube Team 160, Kingston Sloane Mens, Ridgeback Harmony girls, Extreme Glow Girls, Justice BMX Bike, Ridgeback MX20, Raleigh Molly Girls , KidCool Maria 12, Cyclamatic FoldAway, Kingston Mayfair Ladies, Vibe 540, Halcyon Salem Men, Townsend Orleans Men, Raleigh Caprice 16, 21-speed folding bike, Raleigh Micro Miss 12, Raleigh AT10, Cuda Energy Lightweight, Viking Kendal Gents, Izip Skyline Mens, Barracuda Men's Vivante, Rooster Big Momma, Concept Rock Star, Rooster Go Easy 2011, Kentex Classic Trike, Freespirit NDCENT
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.

Be careful when you put the front tire on that you have the fork facing forward. (I had it backwards the first time). Make sure the big round points on U part of the fork point towards the front of the bike.

The tires are very knobby. If you ride on the street a lot you might want to change them to something with a smoother tread in the middle.

The bike weighs 38 pounds put together - not exactly light, but since I ride for pleasure and exercise, and don't plan to race, the weight is fine.

If you get it for less than 150, (what Amazon is selling it for the week of Feb 20), it is quite a bargain. (disc brakes by themselves often add $100 to a bike).
Raleigh Mini Miss, Reflex Breeze DS, Diamondback Venom BMX, Diamondback Response, Barracuda CS100, Raleigh Jet Boys Bike, CBR Fusion Bike, Elswick Premier Rigid, bike*star 30.5cm, 26" 21-speed folding, Raleigh Ziggy Kids, Raleigh Molly 14 inch, R16 Balancer Unicycle, Rooster Big Momma, Lombardo Alverstone 300, First 10'' Bike, Redemption Mag Wheel, Raleigh Chopper Childrens, Powabyke X Byke, Kingston Mayfair Ladies, Raleigh MX16FSBL, Barracuda H700, San Marco Regal-E, Madison L28, Black Eye Boy's Killroy, Viking Easy Street Unisex, Rooster Big Daddy, Viking Prestige 18sp, Olympics Team GB, Diamondback Overdrive, Bellelli B-Bip, 26" 21-speed folding bike, Redemption Mag Wheel, Boss Blackdawn, BARRACUDA SAWTOOTH, Raleigh Planet Play, Rooster Big Daddy Kids
I raised the seat pretty high for a comfortable ride at my height, and found the handlebars are two low. I fixed this by adding some handlebar extenders which allow me to be more upright when I am not braking.

To my knowledge you can't raise the stem on the handlebars without adding a spacer. If anyone finds out otherwise, please comment to this post.

Another possibility (besides handlebar extensions), would be to replace the handlebar with one that has more of a rise to it.

The Topkick is made by Kent Bicycle Company for GMC. They also make some Cadillac Mountain Bikes - the Cadillac AM2.4 and AM2.7, which are sold on Amazon. They are both dual suspension with disc brakes and have a very similar frame as the Topkick. Both bikes sale for over $1000.
I purchased this bike in February of 2009. I was looking for something to improve my cardio health but wasn't sure that I would really enjoy biking. After seeing numerous ads in the online classifieds of nearly new $1000 to $2000 bikes being sold for substantial discounts after being ridden for only a few miles, I decided to err towards caution in my initial purchase. I was hoping that by purchasing a mid priced bike I should get a reasonable quality components and not be deterred by a low quality bike. Assembly was basic requiring me to attach the front wheel, handlebar, pedals and seat. Everything else was preassembled. Pretty simple really. Inflate the tires and in 45 minutes it was ready to ride.

I am 58 and live in the mountains in the Pacific Northwest so I was looking for a full suspension bike, mostly to ease the shocks and jolts from riding on bumpy chip sealed roads. Since I was looking for a bike for exercise, weight of the bike was not a huge factor to me.
Diamondback Grind BMX, Viking Road FX , Redemption Mag Wheel Boys, Diamondback Peak 18", Barracuda Yellowstripe, Raleigh 20" Wolf, Cycloc - store your bike, Viking Prelude 7 Speed, Freespirit Ndcent 20", Radio Flyer Retro Rocket, Olympics Team GB BMX, Gents 26 Inch, Piranha P1 2011, Pink Charm ATB, Raleigh MX20, Reflex Easy Street, Viking Prestige 18sp, Diamondback Overdrive, CBR Cannon Men's Bike, Raleigh Go Kart, 26" Mountain Bike, Indy Red Trainer unicycle, Cube Mountainbike, Raleigh Rocker Boys, Electra Om 3i, Cbr Tornado Mens, QU-AX Unicycle, bike*star 40.6cm, Cuda Kinetic Lightweight, Octane Special Edition, Triumph Milano Women's, Raleigh Starlight Girls Bike, Unicycle 24", Ladies 26 Inch, Stowabike Folding Dual, Raleigh Krush 14w, Viking Road Single, Fit 2012 BF, Dawes Unisex Diamond
Having not owned a bike since my 20s, I was unfamiliar with the improvements in cycling. The 21 speeds seemed a bit of overkill to me at first, but now I find it well worth having in the rolling hills in my area. The push button indexed shifters were a real treat to me and easy to learn. The rear derailleur shifted extremely smoothly with no jumps clicks or clatters especially in the upshift. It simply changed ratio and I could feel a little extra resistance in the pedals as I gained speed. The front derailleur is a little less sophisticated but it works adequately. The disk brakes are a good idea in the wet region I live because they are far less likely to lose effectiveness due to getting wet. I remember rim brakes that would become almost ineffectual after riding through a large puddle. My only complaint would be the squealing noise they make at the end of a stop.

On flat roads the gearing is adequate to allow me to pedal along at 22+ mph until my legs tire, but it isn't designed to be a race bike. I have climbed some rather challenging but short hills (total of about 400' gain over a mile and a quarter) and pedaling like mad, I can climb a 12% short grade at 4.8 mph. The bike is heavy, approximately 37 pounds so it makes the hills a little more challenging. Over varied terrain on paved roads I can routinely average around 14 mph. Going down the above series of grades I have coasted up to 38 mph.

The only things I have found to be problematic are that as the bike breaks in, the cables stretch a little so the shifters need to be adjusted after a 100 or so miles. (Common on all bikes) The inner tube in the rear wheel failed at about 130 miles when the joint around the valve gave out while I was off the bike taking a photo. That brings me to a second problem, the tubes. Because of the deep V rims (which makes them stronger) they require a long schrader valve tube. Department stores carry the standard size but not the 48mm valved tubed this bike requires. I would recommend that anyone buying this bike order a couple of 26 x 1.9/2.125 48mm valved tubes at the same time.
Yonex Voltric 5, Elswick Premier Front, Viking Paris 17", Reflex Breeze DS, Reebok Boys Lunar Bike, Rooster Armageddon, Diamondback Outlook 21, Raleigh AT20, Mizani City, Fireman Sam Boy's Bike, 28" KCP ROAD RACING BIKE, Diamondback Option BMX, Barracuda Yellowstripe, Barracuda Core Mens, Ridgeback Minny 2012, Flite Moto-GP Boys, Rooster No Mercy 2011 , Raleigh Cruz Mens, Cycling Winter Bib, Reflex 5' Giraffe, Viking Giro D'Italia, Disney Pixar Cars, Raleigh Molly Girls, Raleigh AT20, bike*star 30.5cm, Raleigh Trail Xc21, Viking Racemaster 56cm, Townsend Vogue 26, EXCEL SPICE 18 SPEED, Raleigh Race Bike, Raleigh City Limits, Mongoose Logo 20", Nirve Cherry Blossom, Kingston Sloane Ladies, Concept Wicked Girls, Stolen 2011 Sinner, Concept Hotrock 16", Diamondback Peak HD
The bike is fun to ride and so far, after over 700 miles, it seems very durable. The only problems were the aforementioned inner tube and derailleur adjustments. The seat isn't the best either, but unless you ride more than 30 minutes at a time it will do. The only changes I have done is to replace the saddle with a male gel saddle (I sometimes ride for two hours or more at a time), added a couple of lights for safety, a bike computer, a clamp to the seat post carrier rack (a cheap and effective dual purpose rear fender), and replaced the knobby off road tires with a smoother tire designed for pavement for lower rolling resistance.

Overall I am very pleased with the bike. The bike is good quality especially for the price. I have recently been test riding some higher end bikes and the only difference is that they are are significantly lighter and significantly more expensive. I would have no problem recommending the bike to anyone.

Phenomenal bike! That is all I can say, especially for the price. Ideal for casual riding. This bike however came with instructions and was purchased from Dunhams in Michigan for about $200.00.

Pros: Stylish, Appealing, both aluminum and steel build, and the full strut suspension system gives it a comfortable ride. Disc brakes are very nice, too!
Viking Deja Vu 17", Elswick Bolero Dual, Concept MX-100, Diamondback Outback, Gents 26" Black ATB, Piranha P4 2011, bike*star 25.4cm, Cuda Flex Lightweight, Dahon Eco C7, Raleigh Womens Bike, Claud Butler Odyssey, Flite Punisher Freestyle, Boys 20 Inch, bike*star 40.6cm, Viking Downtown, Claud Butler Trailridge, Reflex Esprit 20", Kingston Sloane Mens, Boss Halo BMX Bike, Raleigh All Terrain 30, bike*star 40.6cm, Activ by Raleigh Mens, 20" folding bicycle, Boss Blackmagic 21, Townsend Cherise Bike, Gents 26 Inch Hype, Halcyon Fiji Womens, Raleigh Krush 14", Cube Mountainbike AMS, Flite Panic BMX Bike, Mongoose Crossway 350, 26" Single Speed Retro, Reflex Samurai Men's, Viking Road FX, Ultra Motor A2B, Kingston Sloane Ladies, Raleigh Explore Women's, Raleigh All Terrain 05
Cons: (applied to stock build only) After long rides the pedal-bearing hub assembly becomes tightened, very difficult to pedal forward until you reverse-pedal. The rims are too narrow and the high knobs will cause the tire to twist making it difficult to ride sideways on concrete slopes at 45 degree angles or more, The rear suspension system makes is difficult to buy accessories such as a rear tray or basket, The rear derailleur causes the chain to "jump" only during high speed/heavy torque conditions (rear derailleur=7 front=3)

Overall: BEST BANG FOR YOUR BUCK. It's a beautiful bike that grabs alot of attention everywhere I go.

Facts: I am solid, 200lbs 5'10" from Michigan, Ride bikes an average of 4hrs/day, in harsh climates/terrains, (Mich. area) and daily commuting 7 days/week. I'm tough on bikes, and haul groceries with my trailer attached to it.

 Reflex Avalon 17", Viking Valhalla 24sp, Spectacular Spiderman Boys, Woodworm GXI 18.5", Cube Mountainbike ACID, Barracuda Impulse Womens, Reflex Easy Street 20", Ladies Muddyfox Ella,