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Diamondback Cobra 20 Mountain Bike - Boys' - Special Buy

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The Diamondback Cobra 20 in. mountain bike outfits boys for days of trail-riding adventures.

  • Steel frame is built both for speed and for taking on neighborhood streets, bike trails and cross-country loops
  • Front suspension fork features 40mm of bump-gobbling travel to ensure a smooth ride
  • Drivetrain provides 6 speeds to help conquer hills and cruise on flat trails; features integrated chainguard
  • Comfortable SunRace twist shifters allow the hands to remain properly positioned while changing gears
  • Linear-pull brakes offer reliable stopping power and comfortable hand-brake levers
  • Wide, knobby tires provide great traction on varied surfaces
  • Special buy

After its initial break-in period you might notice your bicycle performing less responsively than the day you brought it home. Not to worry, this is typical of all new bicycles and simply reflects that cables have stretched or their housings have seated themselves into final position. To keep running at peak performance, all REI bicycles come with a FREE warranty tune-up, which should be accomplished between the first 100-200 miles of riding or after the first two months if you're accumulating miles less quickly. Contact your nearest REI bike shop for details and an appointment for this important service.

Imported.

Item 838097

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Diamondback Cobra 20 Mountain Bike - Boys' - Special Buy Specs
Specification
Description
Best use
Mountain biking
Mountain bike
Steel
Steel
Front suspension
Zoom suspension, 40mm travel
Not applicable
140mm 1-piece 40
Looseball
SunRace twist
Not applicable
Shimano
Shimano MF-TZ20, 14-28, 6-speed freewheel
6
Rim brake
Alloy linear
Alloy linear
Steel
36h nutted
36h nutted
20 inches
Junior ATB knobby 20 x 2.0
Riser bar
Steel junior riser, 20.5˝ wide x 1˝ rise
Steel quill
Steel Pillar 27.2mm
Junior ATB 2-panel
Resin platform
Threaded 1 in.
Unavailable
Unavailable
Why we don't provide weights
Boys'
Bike style
Bike frame material
Frame
Bike suspension
Fork
Rear shock
Crankset
Bottom bracket
Shifters
Front derailleur
Rear derailleur
Rear cogs
Number of gears
Brake type
Brakes
Brake levers
Rims
Front hub
Rear hub
Wheel size
Tires
Handlebar shape
Handlebar
Stem
Seat post
Saddle
Pedals
Headset
Chain
Weight
Bike weight
Gender

Diamondback Cobra 20 Mountain Bike - Boys' - Special Buy Customer Reviews

REVIEW SNAPSHOT®

by PowerReviews
Diamondback Cobra 20 Mountain Bike - Boys' - Special Buy
 
3.6

(based on 5 reviews)

60%

of respondents would recommend this to a friend.

Pros

    Cons

      Best Uses

          • Was this a gift?:
          • Yes (3)

        Reviewed by 5 customers

        Sort by

        Displaying reviews 1-5

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        (0 of 2 customers found this review helpful)

         
        1.0

        very frustrating experience

        By jacki

        from Lafayette,CO

        About Me Casual/ Recreational

        See all my reviews

        Pros

          Cons

          • Unstable
          • Wears Quickly

          Best Uses

          • Big Kids

          Comments about Diamondback Cobra 20 Mountain Bike - Boys' - Special Buy:

          not happy so far and had a horrible time actually getting the product shipped to me.

          Service and delivery comments:

          I would have to say that I was extremely dissappointed with the service/delivery of this product. To start with I was told I should get the Bike within 7-10 business and it was suppose to arrive on a certain date. Ten days went by and I received no tracking information for the product so I called customer service and they informed me that the bike had not even been shipped yet. And couldn't explain to me why it hadn't and also couldn't explain why I hadn't been notified about it. They told me it would be shipping in two days. Which would get the bike there just in time for my son's bday which is what the bike was for. Two days later when I called back they said now it would be here until the next week, this was suppose to be an in store pick up. But then I told them that this is for a bday and now my son wouldn't have anything for several days. They then agreed to ship another one to my house because they couldn't find out where or when the other one would really be at the store. 6 days later I received the bike. All that to say that i was very frustrated with this whole process and didn't expect this from a company that I have been very happy with in the past. My son does like the bike but the chain keeps coming off and the tire has already had a flat, which he has never had with any of his other bikes. I am hoping this product holds up and we have a better experience then we did with just trying to get the bike actually here.

          • Was this a gift?:
          • Yes

          Comment on this review

           
          4.0

          Great bike except for one thing

          By BendRick

          from Bend,OR

          See all my reviews

          Site Member

          Comments about Diamondback Cobra 20 Mountain Bike - Boys' - Special Buy:

          We have two of these bikes...5 & 7 yr old boys. Great quality bike at a great price. The only downfall is the grip shift is nearly impossible for a 5-7 yr old to shift....which renders it useless. I took both the bikes back into my local REI and they said they will replace the grip shift with a paddle shifter...FREE OF CHARGE...since it's a "known" defect. THIS is why I shop at REI....customer service! Thank you REI for standing behind this almost-perfect bike. I can't wait to get my 7 yr old back out on Whoops trail with his new paddle shifters! Yeehaa!

          Comment on this review

          (0 of 2 customers found this review helpful)

           
          3.0

          really hard to shift.

          By yogimindmel

          from bend, oregon

          See all my reviews

          Site Member

          Pros

            Cons

            • Rough Ride

            Best Uses

              Comments about Diamondback Cobra 20 Mountain Bike - Boys' - Special Buy:

              great bike but shifting has been very frustrating for my 6 year old.

              • Was this a gift?:
              • No

              Comment on this review

              (3 of 4 customers found this review helpful)

               
              5.0

              I like it!

              By RYSE

              from Roseburg, Oregon

              About Me 8-year old boy

              See all my reviews

              Site Member

              Pros

              • Easy to change gears
              • Easy to change speed
              • Stable

              Cons

                Best Uses

                • Learning hand brakes
                • Learning to shift

                Comments about Diamondback Cobra 20 Mountain Bike - Boys' - Special Buy:

                I like the gears and brakes. When I am going down a big hill and want to turn I do my brakes, but not all the way, just a little bit, so I go slower and don't hit the fence. I used the bike to go to school.

                Just fits a 2nd grader. Will get to small by end of 3rd grade:)

                • Was this a gift?:
                • Yes

                Comment on this review

                (4 of 4 customers found this review helpful)

                 
                5.0

                Great first "real" bike

                By Central MD life

                from DC Metro

                About Me Casual/ Recreational, Getting Started

                See all my reviews

                Site Member

                Pros

                • Built to Last
                • Easy to Grow Into
                • Highly Adjustable
                • Skill-builder
                • Smooth Ride
                • Stable

                Cons

                  Best Uses

                  • Big Kids
                  • First Learning
                  • Light Trails
                  • Street Riding

                  Comments about Diamondback Cobra 20 Mountain Bike - Boys' - Special Buy:

                  Great first "real" bike with gears! We took the pedals off initially for some balance practice and then signed him up for a REI "Learn to Ride for kids" class at the local REI the first week he had the bike. After the 2-hour class, the confidence had soared and he was riding in circles around obstacles. A week later, he was riding across lawns, park trails and riding up a 45 degree slope while changing gears. Best experience and his skills are still growing!

                  • Was this a gift?:
                  • Yes

                  Comment on this review

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