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Diamondback El Oso Nino 20

Diamondback El Oso Nino 20
Color: Metallic Orange Gloss
Size: 20-inch
Please select options Unavailable


El Oso Nino 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"-55" tall, aged approximately 4-9 years old.

Geometry Chart:
FRAME SIZE20" 44"-55"
Bike Stand Over Height 576.0 mm
Bike Seat Tube Length 272.0 mm
Bike Top Tube Length 508.0 mm
Bike Head Tube Length 115.0 mm
Bike Head Angle 71.0 °
Bike Seat Angle 70.0 °
Bike Wheel Base 927.0 mm
Bike Chain Stay Length 380.0 mm
Bike Fork Offset 45.0 mm
Bike Bb Height 240.0 mm
Bike Bb Drop 11.0 mm
Bike Stem Length 90.0 mm
Bike Handlebar Width 560.0 mm
Bike Crank Length 152.0 mm
Bike Seat Post Length 260.0 mm
Bike Stack 445.0 mm
Bike Reach 345.0 mm
Bike Fork Length 358.0 mm


Frame 20" Hi-Ten Steel Junior Fat Bike, for Disc Brake Only
Fork 20" Hi-Ten Steel Junior Rigid, w/ Disc Tabs
Rims 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 20x4.0"
Bottom Bracket Square Taper - 5pc
Crankset 152mm Steel w/ 40T Single Ring
Shifters Shimano Tourney RS35 Grip Shift, 7 Speed
Rear Derailleur Shimano Tourney FT35, 7 Speed
Cassette/Freewheel Shimano Tourney TZ21 7 Speed Freewheel,14-28T
Chain KMC 7 Speed
Brakes Apex Mechanical Disc, w/ 160mm Front /160mm Rear Rotor
Brake Levers Alloy Lever
Handlebars Alloy, 560mm Wide, 22.2mm Bar Bore
Tape/Grips DB Kraton
Stem Promax 90mm
Headset Threadless
Seatpost Steel 27.2mm
Saddle Padded Jr. Diamondback
Pedals 9/16" Resin
Accessories & Extras Tool Kit

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Metallic Orange Gloss / 20-inch 791964599968 02-780-5001 210000089092