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2018 Diamondback

El Oso Uno

A 26″ steel frame rigid fat bike with modest components and tektro mechanical disc brakes.
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Manufacturer Price

$750
Weight37.9 lbs  
FrameSteel
SuspensionRigid
ForkSteel
Wheels26″ Aluminum
Drivetrain2 × 9
GroupsetAcera
BrakesTektro Mechanical Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
El Oso Uno
Other Fat bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

25 mph

El Oso Uno

23 mph

Similar Bikes

Highest gear

(descending)

Sizing
SM

5'4" – 5'8"

MD

5'6" – 5'11"

LG

5'9" – 6'1"

Rider Fit Notes

None yet.

Do you have this bike? Help other riders make a decision about which size will work for them by sharing your own size and fit notes.

Reviews
Bicycling
The Diamondback El Oso Is an Affordable and Rad Fat Bike

Feb 2018

Want to steamroll over terrain regular bikes can't conquer? This line of fat bikes is a great bargain—and there's even a mini-version for your sidekick.

Highs
  • Lightweight aluminum frame

  • Quality parts for the price

  • Versatile for sand, snow, and trail surfaces

  • Hydraulic disc brakes on upper-end model

  • Up to 5-inch tire clearance

  • Bikepacking-friendly with rack mounts and wide triangle

Lows
  • It's a bit of a tank even without bags

  • Lower-end models have rigid fork and mechanical brakes

Read Review

Geometry
Specs
Build
Frame

Steel

Fork

Steel

Bottom Bracket

Sealed cartridge

Headset

FSA No.8B, orbit sealed

Stem

DB Race M-series

Handlebar

Diamondback

Saddle

DB Race M-series

Seatpost

DB Alloy micro adjust

TypeRigid

Pedals

DB4L alloy platform

Groupset
Rear Derailleur

Shimano Acera M3000

Front Derailleur

Shimano MT400

Crank

SR Suntour XCM, 36/22T

Shifters

Shimano Acera M3000

Cassette

Shimano HG200, 11-36T, 9-speed

Chain

KMC X9 EPT

Brakes

Tektro Novela Mechanical Disc Brake

TypeTektro Mechanical Disc

Brake Levers

Tektro 2-finger alloy

Wheels
Rims

14g stainless-steel

Front Hub

Alloy, 32h

Rear Hub

Alloy, 32h

Tires

Chaoyang Cruiser

Rider Notes
Riders Also Viewed

First added March 1

Last updated March 1

Not listed for 2,668 days