el Oso Tres

Assembly Options Professionally assembled by your local dealer, or DIY the assembly - its up to you!
Financing Available Buy Now, Pay Later with Klarna. We’ve partnered with Klarna to offer flexible payment options to pay over time.
30 Day Returns Our love your ride guarantee – if you’re not 100% happy with your bike, we’re not happy either. Click here for more details
Frame Warranty Covered for at least 5 years! Check out the details to see if your bike qualifies for longer.
Hydraulic disc
Tire Size
Frame material

We designed the Diamondback el Oso Tres to be capable of any adventure you point it at. Of course, you might argue that a fat bike with suspension fork is overkill, what with the high-volume/low-pressure Maxxis Minion FBF/FBR 26″×4.0-inch tires already soaking up rocks and gripping Mother Earth like they were slathered in glue. Then again, we built this bike with the most remote and technical trails in mind. When you’re days away from the nearest trailhead, a burly, winter-tested fork plus a reliable parts package all come in real handy. The KS E30i dropper seatpost improves maneuverability on dicey downhills. Thru-axles front and rear add stiffness for enhanced steering precision. Overkill? Heck. Yeah. Bring on the overkill. Bring on the adventure.

  • Bike Frame El Oso 6061-T6 Double Butted Aluminum, Formed Top and Down Tube, 1.5" Tapered Machined Headtube, 197mm Thru Axle, Fits up to 26x5" Tire
  • Bike Fork Manitou Mastadon Comp, 100mm, 34mm Stanchion, 3 Position Compression Adjust, VTT Cartidge, 150x15mm Hex-Lock Thru-axle, 1.5" Taper Steerer
  • Bike Headset FSA No.57, Sealed Cartridge
  • Bike Cranks Raceface Æffect, 28T Direct Mount Narrow Wide
  • Bike Bottom Bracket Raceface Outboard Bearing
  • Bike Rear Derailleur Shimano XT M8000 Shadow Plus, 11 Speed, GS
  • Bike Shifter Shimano XT M8000 Shadow Plus, 11 Speed
  • Bike Cogset Shimano XT M8000, 11 Speed, 11-46T
  • Bike Chain KMC X11 EPT Anti-Rust, 11 Speed
  • Bike Front Hub Sun Ringle, 32h Alloy, Sealed Cartridge Bearing, 150mmx15mm Thru-axle
  • Bike Rear Hub Sun Ringle, 32h Alloy, Sealed Cartridge Bearing, 197mmx12mm Thru-axle, Cassette
  • Bike Spokes 14g Stainless Steel
  • Bike Rims Sun Ringle Mulefüt SL 80mm
  • Bike Tires Maxxis Minion FBF 26x4.0" EXO, TLR, Folding / Maxxis Minion FBR 26x4.0" EXO, TLR, Folding, 120tpi
  • Bike Brake Levers Shimano SLX M7000
  • Bike Pedals DB CNC Platform, Sealed Cartidge Bearing w/Replaceable Pins
  • Bike Handlebar DB35 Alloy, 760mm Wide, 15mm Rise, 35mm Bar Bore
  • Bike Grips DB4L 135mm Lock On
  • Bike Stem DB35 Alloy, 60mm Reach, 35mm Bar Bore
  • Bike Seat WTB Volt Race
  • Bike Seatpost KS E30i Dropper
  • Bike Extras Tool Kit, Carbon Paste
  • Bike Brakes Shimano SLX M7000, w/180mm Front /180mm Rear Rotors
  • Product ID 3915
Frame Size SM/16 5'4" - 5'7" MD/18 5'7" - 5'10" LG/20 5'10" - 6’1”
Rider Height - - -
Bike Stand Over Height 730.0 mm 768.0 mm 796.0 mm
Bike Seat Tube Length 400.0 mm 450.0 mm 500.0 mm
Bike Top Tube Length 581.0 mm 610.0 mm 630.0 mm
Bike Head Tube Length 110.0 mm 120.0 mm 120.0 mm
Bike Head Angle 68.0 mm 68.0 mm 68.0 mm
Bike Seat Angle 74.0 mm 74.0 mm 74.0 mm
Bike Wheel Base 1129.0 mm 1159.0 mm 1178.0 mm
Bike Chain Stay Length 450.0 mm 450.0 mm 450.0 mm
Bike Fork Offset 50.0 mm 50.0 mm 50.0 mm
Bike Bb Height 320.0 mm 320.0 mm 320.0 mm
Bike Bb Drop 60.0 mm 60.0 mm 60.0 mm
Bike Stem Length 60.0 mm 60.0 mm 70.0 mm
Bike Handlebar Width 750.0 mm 750.0 mm 750.0 mm
Bike Crank Length 170.0 mm 175.0 mm 175.0 mm
Bike Seat Post Length 350.0 mm 350.0 mm 350.0 mm
Bike Stack 590.0 mm 605.0 mm 605.0 mm
Bike Reach 410.0 mm 436.0 mm 456.0 mm
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