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Diamondback El Oso Niño 20"

Diamondback El Oso Niño 20"
  • Color: Green
Color: Green
Size: 20-inch
Please select options Unavailable
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For sand, snow, and moon rocks.

El Oso Niño is our smallest fat bike, made for kids who want to monster-truck over everything in their path. Four-inch wide tires sit atop 20-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.

This little bear’s frame and fork are made from high-tensile steel, tough enough for prowling the neighborhood and the woods. It’s got a seven-speed Shimano grip shifter to charge up hills, and powerful disc brakes for control, allowing riders to go wherever the trail or their imagination takes them — maybe even to the moon!

This model fits riders 44"-54" tall, aged approximately 4-9 years old.


Frame 20" Hi-Ten Steel Junior Fat Bike, for Disc Brake Only
Fork 20" Hi-Ten Steel Junior Rigid, w/ Disc Tabs
Headset Threadless
Rims/Wheels 32h Jr Fatty Alloy
Hubs Front: Steel 32h Disc, 3/8" Nutted, 135mm OLD
Rear: Steel 32h Disc, Freewheel, 3/8" Nutted, 180mm OLD
Spokes 14g Steel
Tires Chaoyang 20 x 4.0"
Crankset 152mm Steel w/ 40T Single Ring
Bottom Bracket Square Taper - 5pc
Chain KMC 7 Speed
Rear Derailleur Shimano Tourney FT35, 7 Speed
Cassette/Rear Cogs Shimano Tourney TZ21 7 Speed Freewheel,14-28T
Shifters Shimano Tourney RS35 Grip Shift, 7 Speed
Handlebars Alloy, 560mm Wide, 22.2mm Bar Bore
Tape/Grips DB Kraton
Stem Promax 90mm
Brake Levers Alloy Lever
Pedals 9/16" Resin
Saddle Padded Jr. Diamondback
Seat Post Steel 27.2mm
Accessories & Extras Tool Kit

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Green / 20-inch 791964574118 02-0500070 210000032938