Diamondback El Oso Nino 20 Kids' Fat-Tire Mountain Bike

$650.00
This item is not eligible for Member Coupons.
Color: Green Gloss
$650.00
$539.93
Size: 20 IN
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This bike is made for kids who want to monster-truck over everything in their path. The kids' Diamondback El Oso Nino fat bike fits riders 44–54 in. tall, aged approximately 4–9 years old.

  • Features

    • This little bear's frame and fork are made from high-tensile steel for a smooth ride that's tough enough for prowling the neighborhood and the woods
    • 4 in. wide tires offer amazing grip and sit atop 20 in. inch wheels, making for a unique style and ride
    • Low tire pressure allows the bike to grab every bit of traction available, with extra float for soft surfaces and sand
    • Apex mechanical disc brakes with 160 mm rotors front and rear provide great stopping power, allowing riders to go wherever the trail or their imagination takes them
    • Shimano Tourney 1 x 7 speed drivetrain with Revo Grip Shift has 7 speeds to keep shifting simple and easy to master; Shimano grip shifter lets them charge up hills
    • Specs and images are subject to change

    Imported.

    This bike comes with Coast to Coast Support, which includes:
    • 1 year of free adjustments (see more below)
    • In-store bike assembly
    • Pickup in store or curbside
    • Bike experts available at 170+ bike shops
    REI Co-op Members get more:
    • Free flat tire repairs (labor only; parts not included)
    • 20% off shop services
    More about our free adjustments:
    New bikes go through a normal break-in period, after which they should be readjusted. All bicycles sold at REI include free adjustments for one year after purchase date—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation and chain lubrication. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.

    View all Diamondback Kids' Mountain Bikes
  • Technical Specs

    Best Use

    Mountain Biking

    Mountain Bike Style

    Fat-tire

    Frame

    Hi-Ten steel

    Fork

    Hi-Ten steel rigid

    Bike Suspension

    No Suspension

    Crankset

    152 mm steel arms with 40T Single Ring

    Bottom Bracket

    Square Taper - 5pc

    Shifters

    Shimano Tourney RS35 Grip Shift, 7 Speed

    Rear Derailleur

    Shimano Tourney FT35, 7-speed

    Rear Cogs

    Shimano Tourney TZ21 7-speed Freewheel, 14-28T

    Number of Gears

    7 gear(s)

    Brake Type

    Mechanical Disc Brake

    Brakes

    Apex mechanical disc, with 160 mm front and 160 mm rear rotor

    Brake Levers

    Alloy lever

    Rims

    Jr Fatty Alloy, 32 h

    Front Hub

    Steel 32 h disc, 3/8 in. nutted, 135 mm OLD

    Rear Hub

    Steel 32 h disc, freewheel, 3/8 in. nutted, 180 mm OLD

    Wheel Size

    20 inches

    Tires

    Chaoyang 20 x 4.0

    Tire Width

    4 inches

    Handlebar Shape

    Riser Bar

    Handlebar

    Alloy, 560 mm wide, 22.2 mm bar bore

    Stem

    Promax 90 mm

    Seat Post

    Steel 27.2 mm

    Saddle

    Padded Jr. Diamondback

    Pedals

    9/16 in. resin platform

    Headset

    Threadless

    Chain

    KMC 7 Speed

    Weight

    30 pounds

    Bike Weight

    Bike weight is based on median size, as sold, or the average of two median sizes.

    Gender

    Kids'

  • Size Chart

    20 IN
    Height Range3'8'' - 4'7''
    Reach345
    Stack445
    Effective Top Tube508
    Seat Tube Center-Top254
    Standover Height576
    Head Tube Length115
    Head Tube Angle (degrees)71
    Seat Tube Angle (degrees)70
    Bottom Bracket Height240
    Wheelbase927
    Chainstay380
    Fork Offset45

    Sizing Notes

    Measurements are stated in millimeters unless otherwise indicated.

    How we measure bikes

    1. Standover Height Standover Height is a measurement from the ground to the top of the top tube, measured at the midpoint of the top tube.
    2. Reach Reach is the horizontal distance from the center of the cranks to the center of the head tube, measured at head tube level.
    3. Stack Stack is the vertical distance from the center of the cranks to the center of the head tube, measured to the top of the head tube.
    4. Effective Top Tube Effective top tube is the distance from the center of the head tube to the center of the seat tube/seat post, measured parallel to the ground.
    5. Seat Tube Center to Top Seat Tube length is the measurement of the seat tube, from the center of the cranks to the top of the seat tube.
    6. Head Tube Length Head Tube Length is measured from the bottom to the top of the head tube.
    7. Head Tube Angle Head Tube Angle is the acute angle between the head tube and the ground (measured towards the rear of the bike)
    8. Seat Tube Angle Seat Tube Angle is the acute angle between the seat tube and the ground (measured towards the rear of the bike).
    9. Bottom Bracket Height Bottom Bracket Height is a measurement taken vertically from the ground up to the center of the cranks.
    10. Wheelbase Wheelbase is the measurement from the center of the front axle to the center of the rear axle.
    11. Chainstay Length Chainstay Length is the measurement from the center of the cranks to the center of the rear axle.
    12. Fork Offset Fork Offset, or rake, is the distance from the front axle to a line drawn parallel to the center of the head tube or steering axis.
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