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Diamondback 2013 Junior Viper BMX Bike with 20-Inch Wheels (Green, 20-Inch/)

4.2 out of 5 stars 17 customer reviews
| 9 answered questions

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  • Heavy duty steel frame / fork
  • Rush alloy linear-pullbrakes and coaster brakes
  • DB "Icon" grips w/ bar ends
  • Junior Padded seat
  • Alloy 36H rims
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Technical Details


Product Description

The Viper is the quintessential BMX bike. Loaded with simplicity and value, the Viper series dominates the scene with tough components at a value driven price. The Jr. features a value driven component spec giving everyone the chance to ride like a pro.

Product Details

  • Product Dimensions: 20 x 15 x 15 inches ; 25 pounds
  • Shipping Weight: 33 pounds
  • Domestic 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.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B008O0XLJ0
  • Item model number: 02-13-1080
  • Average Customer Review: 4.2 out of 5 stars  See all reviews (17 customer reviews)
  • Amazon Best Sellers Rank: #503,513 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
  • Product Warranty: For warranty information about this product, please click here

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Verified Purchase
This is a great size bike for our 50th percentile son who turned 6 right after we gave it to him, so he will be using this bike for several years. Several 20" bikes were too tall for him to confidently touch the ground, but this fits him great. The bike is a more pleasant green than in the picture.
Assembly was straight forward. My bike had a few issues that I didnt notice right away but was able to fix before we gave it to our son at christmas. Both wheels have a bit of a hop in them, the rear being more apparent, They were both true side to side. On inspection I found a stripped spoke nipple on the rear wheel. The rear wheel hub was also over tightened, when I spun the wheel you could see it slow. To properly adjust this I would have had to buy a bike wrench, but in the end I just took the rear wheel to the local bike shop. They replaced the spoke nipple, trued the wheel a bit better, and adjusted the wheel hub tightness all for $15 (almost the cost of buying the bike wrench).
When i put the rear wheel back on i got the chain tight, but due to slight sprocket alignment (quality) there was a audible and palpable click when peddling. Loosening the chain slightly is all it took.
If you average out the price and value I think its still a great bargain. The bike and components all appear to be made in china. As summer rolls around he'll ride it much more. If more issues arise I will update my review.
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By ASB on July 18, 2013
I am an eight year old boy and i love my Jr. Viper Diamondback bike! It's cool because it has handle and peddle brakes. It is safe because it has four bright lights. I like that it has a chain guard but i don't like that it does not have a kickstand. The coolest thing about it is that it goes really fast. I would recommend it for eight year old boys.
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Verified Purchase
The boy loves his new bike.

When it comes to 20" boys bikes it seems you either get the cheapo big box retail bikes, or the $$$ brand bike store bike. When you have a rough kid that plays hard the cheap doesn't last and the expensive seems a waste of money. So after doing a lot of comparison shopping we ended up getting this for our 8 year old son.

It's a pretty burly bike and out of the box is a really easy set up. I had to do some chain alignment, and we stripped off the hand brake & chain guard because I could see those getting broke right away. Good stand over height but should be able to grow with him for a few years. For the money they could have put on some color grips or something more to ramp up the cool, but I got it on sale so we threw on some upgrades anyhow.

I'd recommend this bike to anyone looking for a bike that can take a kids abuse. I'll update if anything breaks and changes my opinion.
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Verified Purchase
I ordered this as a gift for my grandson, who is turning 9. It arrived today and I've just assembled it.

I must say that when I read the "Tools Needed" list on the outside of the carton I was a bit worried about what I was into with assembly. In addition to the usual list of suspects--couple of box wrenches, adjustable wrench, screwdrivers, etc., it lists torque wrench, cone wrench (what's a cone wrench???), chain tool, etc.

The list lied.

You just need two sizes of box wrench, some allen wrenches, philips screwdriver, and maybe some needlenose pliers for pulling the brake cable through and, perhaps, to crimp the tiny cable end. Assembly involved the front fork and handlebar, front wheel, pedals, seat/seat tube, hand brake and calipers, and a couple of reflectors. That's about it. (The chain was on--no need for a "chain tool.") Everything went together nicely and no parts were missing. The most difficult part of assembly is getting the hand brake adjusted properly.

This is a handsome, sturdy bike, and I'm excited to give it to this fellow.

I shopped around online, and several places had it. I was seeing prices of $169 and $179. One place had it for a price closer to what I paid through Amazon, but then shipping was added on and it would have taken much longer to arrive. Ordering with Amazon Prime it was on my front porch fewer than 48 hours after I placed the order and with free shipping!

It's a cheery story all around. :-)
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Verified Purchase
My son wanted a 20" bike, and since all the disposable ones from the box store had left me underwhelmed, I checked here for something better. I found this year old model for almost 40% off, and I decided this would fit the bill. The box came with a few holes, and the tools missing (my mens diamondback purchased at the same time had the allen wrenches, but they were just thrown in the box, so I know these fell out). Was easy to put together (seat, stem, handlebars, front wheel, and pedals - plus stretch the brake cable). The hand brake is redundant, as this already has a coaster brake. Felt pretty heavy compared what I remember my old chromemoly bike being, but its a one piece crank with steel frame. I weighed it @ just under 27 lbs fully assembled. It will work for now until I get him a "good" bike in 2-3 years. Its definitely not yellow like the pic on here, but more "acid" green.
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Verified Purchase
It isn't as nice as Diamond Backs were when my son was growing up, but then what bike that is affordable is these days? My 7 year old grandson loves this bike. It was easy to put together, although not by me, because I was clueless, and there are no assembly instructions. Thankfully my son came by and had it together within ten minutes. I do wish it had come with a kickstand.
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