Diamondback Boys' Cobra 20'' Mountain Bike

NOW: $169.98 (26% off!)
Was: $229.99*

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Diamondback Boys' Cobra 20'' Mountain Bike - Dick's Sporting Goods
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  • 20 IN.WHEEL
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Product Information:

Free In-Store Bike Assembly when purchased online or in-store. Click link below for details.

He can climb steep hills and conquer bumpy trails with the Diamondback® Boys' Cobra 20 Mountain Bike. The high tensile steel frame and suspension fork provides an upright and steady position, enduring the impact of uneven terrain. The Shimano 7-speed drivetrain provides a wide range of gears and linear pull brakes to stop with ease.
Click here to learn more about Free In-Store Bike Assembly


    • Frame Size: 20"
    • 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 w/ 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 w/ Smooth Center Ridge
    • Brakes: Alloy Linear Pull
    • Brake Levers: Alloy Linear w/ 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
    • Style: 02-15-5130
    • Diamondback

    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.
Country of Origin: China
Web ID: 46576806

Customer Reviews:

Rated 4.7 out of 5 by 18 reviewers.
Rated 5 out of 5 by Great bike Bike is exactly what we were looking for. Customer service rep assembled the bike while we waited and fitted for my sons size. July 20, 2016
Rated 5 out of 5 by Good bike Good bike for the price. Would definitely recommend this bike for a entry level gear bike. July 17, 2016
Rated 5 out of 5 by Excellent Great bike, sturdy with brakes and gears that operate easily. My 6 year old son loves it! June 11, 2016
Rated 5 out of 5 by Great Bike My 9 Year old Loves this Bike. Great Quality, Great Shocks, Perfect height! we looked around for a few months before we picked this beauty and it was worth the wait to find! In Store Staff was great .. we added on a kick stand June 2, 2016
Rated 5 out of 5 by Great bike for the price I purchased this bike for my 6 year old son. He was having trouble keeping up on his smaller single speed. He was really having trouble on hills because his bike was too difficult to pedal. This bike has 6 gears, so problem solved. My son was a little intimidated at first, because this bike was larger than what he was used to. After a little encouragement and a couple wipe outs he has no trouble riding this bike. The geometry of the bike allows him to straddle the frame and stand flat footed. The frame slopes considerably from front to rear making mounting and dismounting the saddle no problem. The main issue we had was my son had difficulty reaching the brakes. Adjusting the brake levers by slightly tilting them backward into a more upright postion fixed this and he can reach the brakes easily now. We purchased online and picked up in store. The whole process worked great and we were emailed when the bike was ready for pickup. May 16, 2016
Rated 5 out of 5 by Great in store service experience! My son has only had the bike for a couple of weeks and everything has been great so far. When I placed my order online to pick up in store I only expected to walk in get bike and leave, but the bike service was excellent. The gentleman brought my bike up to the front, reviewed everything with me and then walked the bike out to my car for me. He was very polite and respectful. I commend the accompany and Melbourne store for hiring such a great employee! May 12, 2016
Rated 5 out of 5 by Great kids bike, decent price . Seems well built Smooth riding bike, easy to assemble. Make sure you air up the tires even though they may seem fine they have minimal air. My 5 yr old loves it! March 29, 2016
Rated 1 out of 5 by Do not buy this bike Gear shifter cannot be turned from 6 to 1 by my kid. Multiple complaints on internet forums about same. No good fix available. Until this is fixed, cannot recommend you buy unless you want a one speed bike March 14, 2016
Rated 5 out of 5 by I love this bike! It has really great shocks! It is a fast bike, too. The bike rides very smooth, but the gears are kind of hard to shift,but I'll give you five stars. January 15, 2016
Rated 4 out of 5 by fit the bill - but get some new inner tubes Nice upgrade from my son's older bike (with room to grow - he's 7). Last week though after trail blazing for about a total of 2 weeks since Xmas, his inner tube busted (and in a weird way at the seam where you could inflate it but it was flat in other areas of the circumference). Bit the bullet and got a Green Slime inner tube (used them before from another bike). Problem solved. January 12, 2016
  • 2016-11-01 T01:12:38.778-05:00
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