Diamondback Boys' Cobra 20" Mountain Bike

Diamondback Boys' Cobra 20" Mountain Bike is rated 4.3 out of 5 by 41.
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NOW:$179.99(21% off!)
WAS: $229.99*
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Diamondback Boys' Cobra 20
Diamondback Boys' Cobra 20" Mountain Bike
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He’ll be tackling rocky hills and winding trails on the Diamondback® Boys’ Cobra 20" Mountain Bike. Made with a Hi-Ten MTB frame and trail XC travel fork, the Cobra 20 has the strength and stability needed for rugged terrain. Front and rear linear pull breaks provide stopping power. Easy twist shifters let him choose between 6 speeds.

Click here to learn more about Free In-Store Bike Assembly

FEATURES:

  • Best for kids ages 5 to 9
  • Wheel Size: 20”
  • Frame: Steel Jr. 20" Mountain Frame
  • Fork: Zoom Suspension, 40mm Travel
  • Rear Shock: N/A
  • Headset: Threaded 1"
  • Cranks: 140mm One-piece, 40 Tooth with Double Guard
  • Bottom Bracket: Looseball BB
  • Front Derailleur: N/A
  • Rear Derailleur: Shimano TZ-20
  • Cog Set: Shimano MF-HG37 6spd Freewheel (14-28t)
  • Shifter: Shimano RS25 Revo Twist
  • Chain: KMC Z51
  • Hub (F): 36 Hole, Nutted
  • Hub (R): 36 Hole, Nutted, 6-spd Freewheel
  • Spokes: 14g
  • Rims: 36h R-1000 Alloy
  • Tires: Jr. ATB Knobby, 20x2.0 with Smooth Center Ridge
  • Brakes: Alloy Linear Pull
  • Brake Levers: Alloy Linear with reach Adjust
  • Pedals: Avenir Youth Resin1/2"
  • Handlebar: Steel Jr. Riser
  • Grips: DB Kraton
  • Stem: Alloy Quill
  • Seat: JR ATB 2-panel
  • Seat post: Steel Pillar 28.6mm


NOTICE: Used Bikes and/or bikes purchased online that have been assembled are non-returnable.

We strongly recommend that a professional bicycle mechanic properly assembles, repairs, and maintains the bicycle. DICK'S Sporting Goods will provide free in-store assembly service by a certified technician for any bicycle purchased on our website or in our stores (proof of purchase required). If you choose to assemble the bicycle yourself, DICK'S Sporting Goods is not responsible for injuries or damages resulting from improper assembly.
  • Brand: Diamondback
  • Country of Origin: Imported
  • Style: 02-14-5100

Web ID: 15DBKBCBR20B14XXXBJM

Rated 1 out of 5 by from Very poor quality We purchased 2 of these of our 6 and 7 year old grandsons. We were disappointed that they were not able to shift the gears back after going from 1 to 6. The boys, who are both healthy and athletic, have ended up having to walk their bikes up small hills because they simply did not have the grip or hand strength to shift back from 6 toward 1. We took the bikes back the next day after our purchase, but Dicks would not let us return the bikes. We left them there and the repair person and manager both agreed that shifting the gears was very difficult - even for an adult. They changed out the gears on one of the bikes and they oiled up the other; that did not work either. We tried a couple of times to talk them into taking the bikes back because of this defect - but Dicks was adamant that they do not allow bike returns. So we still have the bikes and are still very disappointed in Dicks not attempting to process this as a defective products. We were going to purchase an expensive treadmill at this store but have decided to look elsewhere because of this disappointing experience. Please do not buy this bike until you have you child try out the gears. They are extremely difficult to shift from 6 toward 1 and I am now having to walk along with the kids and shift the gears back for them.
Date published: 2017-08-10
Rated 5 out of 5 by from Great bike Bought this bike for my 7 year old, average size, and it's perfect size for him. I think it's still a little on the heavy side, but it doesn't stop him from climbing hills at the MTB park and flying off jumps. Great starter MTB!
Date published: 2017-08-01
Rated 1 out of 5 by from Worst Kids bike I've ever owned. Since the first day we purchased the bike it had problems. The gear switch is very hard for a kid to shift, the handle bars would shift and move despite being very secure and tight. The final straw was the derailer jamed and I had to junk the bike. Don't waste your money on this shoddy product.
Date published: 2017-06-05
Rated 5 out of 5 by from Our eight year old loves it! Great bike and the best price by far was from Dick's. I picked it up at the store where it was assembled, tuned, and ready to ride.
Date published: 2017-04-28
Rated 5 out of 5 by from Great Just bought this weeks ago and my 8 year old boy loves it. He wanted a big boy bike that had gears and breaks on the handle bars. He loves it.
Date published: 2017-04-26
Rated 5 out of 5 by from Very Happy 7 Yr Old!!! Bought this for a 7yr old. He learned the breaks and shifting quickly. Was on the fence with the Mongoose at WM with rear suspension. Both weigh about the same. DB has a guard around the rear shifter because, even with the kickstand added, they will lay it down wrong side at some point. Hopefully this will help. MG does not have the same guard. DB was about $35 more. Either way, both are probably best for 7 - 10 yr old. MG has a cooler Black & Blue color. All said, still prefer the DB for a couple bucks more. Dicks offers a $50 3yr service plan too which we will use for the included tune ups the next two seasons.
Date published: 2017-04-09
Rated 5 out of 5 by from Great Bike My son loves his new bike. It is very well built and will be a great bike for the next few years for him! Best part was Dick's was the best price around and he was able to go to the store and walk out with it!
Date published: 2017-04-04
Rated 5 out of 5 by from Beautiful Bike! My 8 year-old loves everything about this bike. We gave it to him for Christmas and he constantly wants to be out riding it. He really likes the gear shifting!
Date published: 2017-01-13
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