The Ultimate Guide to Buying a Kids' Bike
Big Creek Mountain Bike Park
Diamondback El Oso Nino 20 Kids' Fat-Tire Mountain Bike
$389.93Compared to $650.00*Save 40%
This bike is made for kids who want to monster-truck over everything in their path. The kids' Diamondback El Oso Nino fat bike fits riders 44–54 in. tall, aged approximately 4–9 years old.
Key Details
Wheel Size
20 inches
Number of Gears
7 gear(s)
- This little bear's frame and fork are made from high-tensile steel for a smooth ride that's tough enough for prowling the neighborhood and the woods
- 4 in. wide tires offer amazing grip and sit atop 20 in. 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
- Apex mechanical disc brakes with 160 mm rotors front and rear provide great stopping power, allowing riders to go wherever the trail or their imagination takes them
- Shimano Tourney 1 x 7 speed drivetrain with Revo Grip Shift has 7 speeds to keep shifting simple and easy to master; Shimano grip shifter lets them charge up hills
- NOTE: Specs and images are subject to change based on component availability
Imported.
This bike comes with Coast to Coast Support, which includes:
New bikes go through a normal break-in period, after which they should be readjusted. All bicycles sold at REI include free adjustments for one year after purchase date—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation and chain lubrication. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.
View all Diamondback Kids' Bikes- 1 year of free adjustments (see more below)
- In-store bike assembly
- Pickup in store or curbside
- Bike experts available at 170+ bike shops
- 20% off shop services
- Free tubes with purchase of flat tire repair (Co-op Cycles brand tubes only; tube must be installed at time of purchase)
New bikes go through a normal break-in period, after which they should be readjusted. All bicycles sold at REI include free adjustments for one year after purchase date—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation and chain lubrication. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.
| Best Use | Mountain Biking |
|---|---|
| Frame | Hi-Ten steel |
| Mountain Bike Style | Fat-tire |
| Bike Suspension | No Suspension |
| Fork | Hi-Ten steel rigid |
| Crankset | 152 mm steel arms with 40T Single Ring |
| Bottom Bracket | Square Taper - 5pc |
| Shifters | Shimano Tourney RS35 Grip Shift, 7 Speed |
| Rear Derailleur | Shimano Tourney FT35, 7-speed |
| Rear Cogs | Shimano Tourney TZ21 7-speed Freewheel, 14-28T |
| Number of Gears | 7 gear(s) |
| Brake Type | Mechanical Disc Brake |
| Brakes | Apex mechanical disc, with 160 mm front and 160 mm rear rotor |
| Brake Levers | Alloy lever |
| Rims | Jr Fatty Alloy, 32 h |
| Front Hub | Steel 32 h disc, 3/8 in. nutted, 135 mm OLD |
| Rear Hub | Steel 32 h disc, freewheel, 3/8 in. nutted, 180 mm OLD |
| Wheel Size | 20 inches |
| Tires | Chaoyang 20 x 4.0 |
| Tire Width | 4.0 inches |
| Handlebar Shape | Riser Bar |
| Handlebar | Alloy, 560 mm wide, 22.2 mm bar bore |
| Stem | Promax 90 mm |
| Seat Post | Steel 27.2 mm |
| Saddle | Padded Jr. Diamondback |
| Pedals | 9/16 in. resin platform |
| Headset | Threadless |
| Chain | KMC 7 Speed |
| Weight | 30 pounds |
| Bike Weight | Bike weight is based on median size, as sold, or the average of two median sizes. |
| Gender | Kids' |
Write a Review
Adding a review will require a valid email for verification
1 year ago
Great with some issues
Very good bike, it just takes a lot of work to start up with it, all of the gears work, but some gears make a vary loud ticking sound that aggravates me, but otherwise, a very good bike
Location:Colorado
8 months ago
Awesome Fat Tire
Yes , I recommend this product
Awesome bike for both my son and grandson. One picked the Green the other was in love with the orange. One is 8 and other is 7. They love running over things in them.
Location:Colorado
8 months ago
Awesome
Yes , I recommend this product
I bought my son and grandson these bikes and they absolutely love them. The bike is a solid build and great components. Highly recommend
