Diamondback Bicycles

El Oso Grande Bike

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The big bear rules the forest!

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Product Details

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El Oso Grande is, like its namesake, surprisingly quick and nimble for its size. This big bear may look like a lumbering beast, but after a few pedal strokes it’s apparent that the bike is a trail-capable adventure machine. We designed El Oso Grande around a rigid platform to shave pounds and let the gigantic tires take care of the suspension—something they do quite well. With hydroformed aluminum tubes, the frame and fork allow an amazingly nimble ride. A SRAM X5 2×10 drivetrain has a gear for any trail, and hydraulic disc brakes provide excellent modulation and stopping power. And how could we forget about the tires: they’re five inches wide. Able to be comfortably ridden with PSI in the low teens, El Oso Grande digs its claws in and doesn’t let go. Whether you’re bikepacking, riding in deep sand and snow, or just enjoying the excess traction on normal trails, this bike is prepared!

6061-T6 aluminum frame/fork with hydroformed tubes, 1.5" tapered machined headtube, fits up to 26x5" tire
SRAM X5 10speed rear derailleur and FSA double chainring crank give you 20 speeds to choose from
Hydraulic disc brakes help you stop well in varied conditions
DB El Oso Custom rigid fork with 15mm thru-axle
26x 4.9" tires are wide enough to keep you going where other bikes give up

  • 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: DB El Oso Custom Rigid Alloy Fork, 1.5 Taper, 150mmx15mm Thru
  • Headset: FSA C-40 Sealed 1-1/8"/1.5" ACB Integrated
  • Cranks: FSA Comet Mega Exo, 36/26T
  • Bottom Bracket: FSA Mega Exo
  • Front Derailleur: SRAM X5 High Direct Mount
  • Rear Derailleur: SRAM X5
  • Shifter: SRAM X5 10spd
  • Cogset (Cassette/Freewheel): 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: Chaoyang Cruiser 26"x4.9"
  • Brakes: TRP Spyre Mechanical Disc, 160mm/160mm Rotor
  • Brake Levers: TRP ML800 Spyke
  • Pedals: DB Alloy w/ molded traction pins
  • Handlebar: DB Pro Bar740mm width, 15mm rise, 31.8mm barbore
  • Grips: DB High Density Foam Grip
  • 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, Chainstay Protector, Clear Coat, H20 bottle mounts