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Diamondback Cobra 20 Jr Boys' Mountain Bike (2011 Model, 20-Inch Wheels)


Currently unavailable.
We don't know when or if this item will be back in stock.
  • Heavy Duty Steel Frame
  • 40mm travel suspension Fork
  • 36 Spoke 20" Aluminum Wheels
  • 6-Speed Freewheel
  • Linear Pull Front and Rear Brakes
Is this a gift? Please note that this item ships in its own packaging and cannot be gift-wrapped or concealed.

Product Description

The Cobra 20 is the perfect bike for the next step in a boy's riding progression. The heavy duty steel frame can take some scuffs and dings while the 40mm suspension fork makes the bumps a little softer. The 6 speed twist shifter is a great way to introduce a boy to shifting without causing too much confusion and the linear pull brakes are a great way get him used to braking with his hands instead of feet. When your little man is ready for his next bike try a Cobra 20.

Product Details

  • Shipping Weight: 36.2 pounds
  • Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
  • ASIN: B0041V4BAO
  • Item model number: 02-10-2305
  • Average Customer Review: 3.7 out of 5 stars  See all reviews (29 customer reviews)
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Customer Questions & Answers

Customer Reviews

The brakes are not working well.
Alex
The bike is made very well, sturdy, the paint is exceptional, great craftsmanship.
C3jim
We just recieved this bike and my 8 year old loves it!
Family6

Most Helpful Customer Reviews

15 of 15 people found the following review helpful By A. Thomas on October 7, 2009
Color Name: Ninja BlueSize Name: 20-Inch Wheels
This is a great little bike for someone who already knows how to ride a bike. This would not make a good first bike. My son started riding smaller bikes when he was 4 and all of his previous bikes were really cheap but were good for learning. We gave him this one for his 7th birthday and it is really nice. The bike works with much less effort than his earlier bikes largely because the wheel bearings, gearing, brakes, and components are much higher quality. He really likes being able to shift the gears, but he really doesn't know how to use them properly - hopefully that will come soon enough. The only drawbacks are that the bike only has hand brakes, which takes some time for younger riders to master. When they do get it, however, the brakes work much better than a pedal style coaster brake. Also, there is no kick stand, but one can be easily added. One last comment is that we bought this bike from a bike shop and they assembled it and then adjusted it again when we bought it. I'm sure that plays a large role in the quality feel of this bike.
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6 of 6 people found the following review helpful By mipaintball on July 22, 2011
Color Name: GreenSize Name: 20-Inch Wheels Verified Purchase
Very nice bike. I bought it for my son so we can ride the trails together. It was easy to assemble and rides great. He rides it like a pro. However, i think its way too heavy for a kid but he dont seem to mind at all. It weighs more than my 26" diamondback response but for the price you cant go wrong with this bike for looks, quality, and performance.
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5 of 5 people found the following review helpful By slippy heal on January 5, 2012
Color Name: GreenSize Name: 20-Inch Wheels
This is a good bike for a rider to make the next step up. My son went from the standard first bike with pedal brakes to this one. It took him about 10 minutes to adjust to the hand brakes and the bigger size. The package showed up with the cardboard slightly torn, but the bike was ok. If you can't assemble this, how will you be ready for the zombie apocalypse?
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4 of 4 people found the following review helpful By ataraxiaone on June 22, 2011
Verified Purchase
Having read the reviews about no instructions and the difficulty of assembling and adjusting, I was on the fence for the purchase. The concerns proved to be unfounded. You don't even need tools, they are supplied with the kit; all you need is an ounce of DIY spirit and a couple of hours (MAX), and you will have a happy child on a great bike. The most involved part of the assembly was the brake and cable adjustment, but the instructions are pretty clear; and um, my 7y.o. is not going to be competing professionally with this bike--it does not need competition grade maintenance. It just needs to work well enough to be comfortable and safe for the child.

Now, this is probably not the first bike you should get for a child; my son was proficient with his smaller bike, which he'd been riding since he was four. There is some learning involved with shifting gears (in fact, my son likes to leave it on a low setting); and some learning to use only handle brakes. There is no kickstand. It is heavier than an alloy bike; I believe it is a steel frame.
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4 of 4 people found the following review helpful By Brenda Walsh on November 13, 2009
Color Name: Ninja BlueSize Name: 20-Inch Wheels Verified Purchase
Nice looking, great bike, my son, who's 8 loves it and wants to ride all the time. The only drawback is, he has a hard time switching gears. Very happy with it!
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3 of 3 people found the following review helpful By Joon on July 2, 2011
Verified Purchase
I love the bike, it was easy to assemble and easy to ride and mount, and it didn't come beaten up (like most people say as a highlighted warning on amazon) but the only drawback is that the gears are awfully hard to change, I got a handful of blisters on the first two days of riding the bike. But if you are able to change the gears with ease you should be having a wonderful time as well.

---Child's Review---
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2 of 2 people found the following review helpful By Nicole Marie Sokolowski on July 9, 2012
This is a good beginner bike for a young boy.

Although sturdy, the frame is relatively heavy. I think this bike is heavier than my adult frame bike.

The OEM grip shifter malfunctioned early. Upgraded to SRAM for less issues.
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2 of 2 people found the following review helpful By domb32 on June 29, 2011
Verified Purchase
Got my son this bike for his 7th birthday, and he loves it. He loves the big boy appela it has. Color scheme is nice and bright. Only downside is the shifter is really hard to shift from the hardest gear to the easiset (6-1). Other than that, it has been great. He rides it everyday. Mounting a water bottle cage is difficult as well. The mounting brackets are under the bottom tube. Not a good place for it in my opinion.
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