Diamondback Oso Nino 20" Kids Mountain Bike (Orange)

Diamondback Oso Nino 20" Kids Mountain Bike (Orange)
Temporarily Unavailable
Price: $499.00

Please Log in to receive a notification when this item arrives in stock.

Save In List
Note: Manufacturer does not allow coupons
This item is eligible for Super Saver Shipping Learn More
This item earns up to 499 VIP Reward Points Learn More

Daimondback created the Oso Nino 20" fat bike with riding enjoyment as their number one priority. The Fat bike tires float over rough terrain and provide unrivaled traction in all conditions. Paired with a Shimano 7 speed grip shift groupset and mechanical disc brakes, the Oso Nino gives kids unparalleled control while they build their skills and become more confident on the bike. The adventures upon this bike are endless, so sit back and watch as your kids take off, guided by their imagination. 


  • Hi-Tensile Steel frame with integrated disc brake mounts
  • 20 x 4" Fat bike tires provide an unrivaled amount of traction
  • 7 Speed Shimano gripshift drivetrain familiarizes kids with shifting
  • Mechanical disc brakes keep all of the traction under control 
  • Designed to fit riders between 44" - 55" tall (roughly 4-9 years old)

Frame: Hi-Tensile Steel Junior Fat Bike (20") (Disc)
Fork: 20" Hi-Tensile Steel Rigid (Disc)
Headset: Threadless
Handlebar: Alloy (22.2mm) (560mm Wide)
Stem: Promax (90mm)
Brake Levers: Alloy Levers
Brakes: Apex Mechanical Disc (160/160mm)  
Shifter: Shimano Tourney RS35 Grip Shift (7 Speed) 
Front Derailleur: -
Rear Derailleur: Shimano Tourney FT35 (7 Speed)
Crank: Steel (40T)
BB: Square Taper (5-Piece)
Cassette: Shimano Tourney TZ21 Freewheel (14-28T)
Chain: KMC 7 Speed
Pedals: 9/16" Resin
Seat: Diamondback Padded Junior
Seatpost: Steel (27.2mm)
Rims: Alloy Fatty JR (32H)
Front Hub: Steel (Nutted Axle) (135mm OLD) (Disc)
Rear Hub: Steel (Nutted Axle) (180mm OLD) (Disc)
Spokes: Steel (14g)
Tires: Chaoyang (20" x 4.0")  

*Note: These bikes are fully built by our expert bike builders, then partially disassembled as needed for shipping. Bikes will arrive to you with some basic assembly still required. 

This product was added to our catalog on June 28, 2022

Rider Height3' 8" - 4' 7"
(A) Bike Stand Over Height576.0mm
(B) Bike Seat Tube Length272.0mm
(C) Bike Top Tube Length508.0mm
(D) Bike Head Tube Length115.0mm
(E) Bike Head Angle71.0°
(F) Bike Seat Angle70.0°
(G) Bike Wheel Base927.0mm
(H) Bike Chain Stay Length380.0mm
(I) Bike Fork Offset45.0mm
(J) Bike BB Height240.0mm
(K) Bike BB Drop11.0mm
(L) Bike Stem Length90.0mm
(M) Bike Handlebar Width560.0mm
(N) Bike Crank Length152.0mm
(O) Bike Seat Post Length260.0mm
(P) Bike Stack445.0mm
(Q) Bike Reach345.0mm
(R) Bike Fork Length358.0mm