2020
Diamondback - el Oso Uno
Mountain · Fat Bike · Unisex
Frame material Steel
Groupset Acera, Alivio
Weight NULL kg
Wheel size 26
Wheel material Aluminum
Drivetrain 2 X 9
Chain Kmc X9 Ept Anti-Rust
Tires Chaoyang Cruiser 26X4.0"
Brake type Mechanical Disc
See all specifications ↓
RRP
781 € incl. taxes
Observed price — New
415 € incl. taxes
Refurbished price
222 € incl. taxes
Likely trade-in value
1 234 €
diamondback el Oso Uno
About this bike

The Diamondback el Oso Uno 2020 is a mountain bike in the fat bike segment. Built around a steel frame.

Expect to pay 415 € for a new Diamondback el Oso Uno, against an official RRP of 781 €. Used or refurbished units land closer to 222 €, depending on condition.

Browse the live offers below or jump to the similar bikes section to compare the Diamondback el Oso Uno with its closest rivals.

Brand Market Footprint

The brand market footprint dashboard is part of the 2BX subscriber experience. Sign in to track on-sale volumes, active retailers and price trends across the European market.

Request access
Specifications
CategoryMountain
SubcategoryFat Bike
Year2020
FrameEl Oso Butted Heat Treated Steel, 1-1/8" Headtube, 170mm Rear...
Frame materialSteel
ForkDB El Oso Custom Rigid Steel Fork, 1-1/8" Steerer Tube, 135mm...
Fork materialSteel
WeightNULL kg
SuspensionRigid
TravelNULL
Sizes XXXXXXXX
Components
Groupset Acera, Alivio
Drivetrain 2 X 9
Front derailleur Shimano Alivio M4020-D, Side Swing, Front Pull, Direct Mount
Rear derailleur Shimano Acera M3000, Shadow, 9 Speed, SGS
Cassette Shimano HG200, 9 Speed, 11-36T
Chain KMC X9 EPT Anti-Rust
Crank SR Suntour XCM, 36/22T
Bottom bracket Sealed Cartridge
Brake type Mechanical Disc
Brakes Tektro Aires Mechanical Disc, w,180mm Front , 160mm Rear Rotors
Brake levers Tektro 2 Finger Alloy
Handlebar Diamondback, 740mm Wide, 15mm Rise, 31.8 Bar Bore
Stem DB 3D Forged, 7° Rise, 31.8 Bar Bore
Grips DB High Density Foam Grip
Saddle DB Race M-series Saddle
Seatpost DB Alloy Micro Adjust, 30.9mm
Pedals DB4L Alloy Platform
Wheels & Tires
Wheel size 26
Wheel material Aluminum
Rims Diamondback 73mm Wide w/28mm Cutouts, 32h Alloy Singlewall
Spokes 14g Stainless Steel
Tires Chaoyang Cruiser 26x4.0"
Tire width 4"
© 2026 2BX Commercial Solutions S.L. — All rights reserved EU data hosted · Built for the bicycle industry