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Diamondback El Oso Nino 20

The Diamondback El Oso Nino is a kid's fat bike for those that want to monster truck over everything in their path.  The frame and fork are made from hi-tensile steel making it a bike to stand up to the abuses from trail riding in the woods or pavement pounding in the neighborhood.

This child's fat bike has got a seven-speed Shimano grip shifter to charge up hills, and powerful disc brakes for controlled descents and stopping. But the focal point of the bike is definitely its four-inch-wide tires that sit atop 20" 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, sand and snow. A bike for children keen on not just building igloos, but dual slalom and jumps in the backyard as well.

Frame 20" Hi-Ten Steel Junior Fat Bike, for disc brake only
Fork 20" Hi-Ten Steel Junior Rigid
Headset Threadless
Cranks Steel 152mm w/ 40t Ring
Bottom Bracket Square Taper - 5pc
Rear Derailleur Shimano Tourney 7 Speed
Shifter Shimano RS-35 Grip Shift
Chain KMC 7 Speed
Front Hub Steel Fat Bike Loose Ball, Bolt on
Rear Hub Steel Fat Bike Loose Ball, Bolt on, Freewheel
Spokes 14G
Rims Diamondback Jr Fat 20"
Tires Chaoyang 20x4.0"
Brakes 160mm Mechanical Disc
Brake Levers Alloy w/ Reach Adjust
Pedals 9/16" Resin
Handlebar Alloy 22.2
Grips Kraton
Stem Ahead 90mm Extension
Seat Jr Mtn Padded
Seatpost Steel 27.2mm
Extras Owner's Manual
Accessories 20" Hi-Ten Steel Junior Fat Bike, for disc brake only


Bike Size Boys/20" / Rider Height: Age 6-10 45" - 56"
Seat Tube Length 272mm
Stand Over Height 576mm
Top Tube Length 508mm
Head Tube Length 115mm
Head Angle 71°
Seat Angle 70°
Wheel Base 927mm
Chain Stay Length 380mm
Fork Offset 45mm
BB Height
Stem Length
Handlebar Width
Crank Length
Seat Post Length


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