Diamondback El Oso


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Diamondback's flagship fat bike, the El Oso is a bike that's as much fun to ride as it looks. 

The bike especially excels in sand or snow thanks to the high volume / low pressure tires. But this fat bike isn't just reserved for sand or snow, take it for a spin on your favorite local trail and you'll be grinning ear to ear from new found fun.

The El Oso is a strong and lightweight hydroformed frame and comes equipped with a 100mm Bluto solo air suspension fork and Kenda Juggernaut 26 x 4.5" tires mounted to 95mm rims with 55mm cutouts.  Smooth shifting provided by a Shimano Deore/SLX drivetrain with Raceface Ride crankset top off the build. 

Frame El Oso Butted 6061-T6 Aluminum w/ Formed Top / Down Tube, 1.5" Tapered Machined Headtube, 197mm Thru Axle, Fits up to 26x5" tire
Fork RockShox Bluto 100mm Solo Air, 32mm Stanchion, Rebound, Lockout, 150mm Thru, 1.5 Taper
Headset FSA C-40 Sealed 1-1/8"/1.5" ACB Integrated
Cranks Raceface Ride, 36/26T
Bottom Bracket Raceface Outboard Bearing
Front Derailleur Shimano Deore M618, High Direct Mount
Rear Derailleur Shimano SLX M615 Shadow Plus
Shifter Shimano SLX M670 10spd
Cogset Shimano HG50 10spd (11-36t)
Chain KMC X10 EPT Anti-Rust
Front Hub Alloy 32h Sealed Cartridge Bearing 150mmx15mm Thru
Rear Hub Alloy 32h Cassette, Sealed Cartridge Bearing 197mmx12mm Thru
Spokes 14g Stainless Steel
Rims DB 95Wide w/55mm Cutout, Singlewall 32h
Tires Kenda Juggernaut 26x4.5"
Brakes Shimano M447 Hydraulic Disc - 180/180mm Rotor
Brake Levers Shimano M506 Hydraulic Disc
Pedals DB Platform CNC, w/replaceable pins, sealed cartidge bearing
Handlebar DB Pro Bar750mm width, 15mm rise, 31.8mm barbore
Grips DB4L Lock-on 135mm D2 Kraton
Stem DB 3D Forged, +/-7° Rise 31.8
Seat DB Race M-series saddle w/ cromo rails
Seatpost DB Micro Adjust 30.9mm
Extras Owner's Manual
Accessories El Oso Butted 6061-T6 Aluminum w/ Formed Top / Down Tube, 1.5" Tapered Machined Headtube, 197mm Thru Axle, Fits up to 26x5" tire


Bike Size S/16" / Rider Height: 5'4" - 5'7" M/18" / Rider Height: 5'7" - 5'10" L/20" / Rider Height: 5'8" - 5'11"
Seat Tube Length 400mm 457mm 500mm
Stand Over Height 787mm 804mm 820mm
Top Tube Length 580mm 609mm 630mm
Stack 600mm 609mm 609mm
Reach 408mm 434mm 455mm
Head Tube Length 110mm 120mm 120mm
Head Angle 68.5° 68.5° 68.5°
Seat Angle 74° 74° 74°
Wheel Base
Chain Stay Length 460mm 460mm 460mm
Fork Offset 50mm 50mm 50mm
BB Height 60mm 60mm 60mm
Stem Length
Handlebar Width
Crank Length
Seat Post Length

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