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Diamondback el Oso Dos

Diamondback el Oso Dos
  • Color: Grey
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The fastest human alive topped out at 27 miles per hour. Fastest bear? 35 miles per hour. The takeaway? Bears are fast; particularly this bear, Diamondback's el Oso Dos. We made this fat bike quick by designing it around a rigid platform to shave pounds. Thru-axles front and rear add stiffness for enhanced steering precision. Let the gigantic tires take care of the suspension—something they do quite well. That means you can ride this bike up and over just about anything and under any conditions, including through snow, sand, or mud. Even when the weather gets bearish, el Oso Dos will keep you in the saddle.

- The 6061-T6 aluminum frame/fork with hydroformed tubes packs a punch without also packing extra weight
- Rear thru-axle adds stiffness
- Twenty reliable gears to scale any terrain, courtesy of Shimano
- Powerful TRP Slate X2 disc brakes provide control in all conditions
- DB El Oso Custom air formed alloy fork rides as well as it looks. It's also plenty stiff, thanks to its 15mm thru-axle
- 26x 4.5" tires are wide enough to take you places other bikes fear to tread


Frame El Oso 6061-T6 Double Butted Aluminum, Formed Top / Down Tube, 1.5" Tapered Machined Headtube, Fits up to 26x5" Tire
Fork DB El Oso Custom Rigid Air Formed Alloy Fork, 1.5 Taper Steerer
Headset FSA No.57, Sealed Cartridge
Axles Front: 150 x 15mm thru-axle
Rear: 197 x 12mm thru-axle
Rims/Wheels Diamondback 90mm Wide w/Cutouts, 32h Alloy Single wall
Hubs 32h Alloy, Sealed Cartridge Bearing
Spokes 14g Stainless Steel
Tires Kenda Juggernaut 26x4.5", 60tpi, Folding
Crankset FSA Comet Mega Exo
Chainrings 36/24T
Bottom Bracket FSA Mega Exo
Chain KMC X10, 10 Speed, EPT Anti-Rust
Front Derailleur Shimano Deore M617 Side Swing, Front Pull, Direct Mount
Rear Derailleur Shimano Deore M6000 Shadow Plus, 10 Speed, GS
Cassette/Rear Cogs Shimano HG500, 10 Speed, 11-42T
Shifters Shimano Deore M6000, 10 Speed
Handlebars Diamondback, 740mm Wide, 15mm Rise, 31.8 Bar Bore
Tape/Grips DB High Density Foam Grip
Stem DB 3D Forged, 7° Rise, 31.8 Bar Bore
Brake Levers TRP Slate X2
Brakes TRP Slate X2, w/160mm Front /160mm Rear Rotors
Pedals DB4L Alloy Platform w/Replaceable Pins
Saddle WTB Volt Comp
Seat Post DB Alloy Micro Adjust, 30.9mm
Accessories & Extras Tool Kit

* Subject to change without notice.

Part Numbers

Option UPC MPN
Grey / Small 791964588139 02-0211600
Grey / Medium 791964588146 02-0211601