Diamondback El Oso Nino 20 (2016)


The appeal of a fat bike is undeniable: the instant you see one, you just gotta ride it! El Oso Nino is our smallest fat bike, made for kids who want to monster truck over everything in their path. This little bear’s frame and fork are made from hi-tensile steel, tough enough for life in the neighborhood and the woods. It’s 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 wheels and tires—and yes, they really are as cool as they look! Four-inch-wide tires 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 and sand. It’s very possible El Oso Nino would work on the Moon—what do you think?


  • Hi-ten steel frame and fork for durability
  • Diamondback Jr Fat 20" wheels with 4.0" wide tires
  • Shimano 7-speed drivetrain w/gripshifter
  • Disc brakes with 160mm rotors
  • More traction than any bike you've ever ridden!
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

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