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El Oso de Acero

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El Oso de Acero

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El Oso de Acero

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Is it possible to call a fat bike sleek? El Oso de Acero's classic steel lines look almost elegant when compared to other fat bikes. Steel has long been the favorite of bicycle frame makers due to its strength, ride quality, and aesthetic. These tubes are butted and heat-treated, giving the bike a level of compliance on top of what the roomy tires provide. Designed to get you and your gear out in the backwoods as easily as possible, El Oso de Acero is equipped with a full complement of solid Shimano parts. With a 3×9 drivetrain, rack mounts, and a spirit of adventure, it's a dependable workhorse for those seeking something new out of a bike. With more traction than any bike's allowed to have, it's a rockcrawler, a dune buggy, and a snowmobile. In white or camouflage, El Oso de Acero is ready to help you get lost!

Frame El Oso Butted Heat Treat Steel 1-1/8"Headtube, 150mm Rear OLD, Fits up to 26x5" tire
Fork DB El Oso Custom Rigid Steel Fork, 1-1/8", 135mm QR Dropouts
Headset Threadless 1-1/8" Aheadset
Cranks Shimano Acera M3000, 40/30/22T
Bottom Bracket Sealed Cartridge
Front Derailleur Shimano Alivio M410 E-Type
Rear Derailleur Shimano Alivio M4000
Shifter Shimano Alivio M4000 9spd
Cogset Shimano HG300 9spd (12-36t)
Chain KMC X9 EPT Anti-Rust
Front Hub Alloy 32h Disc, 3/8" Nutted 135mm
Rear Hub Alloy 32h Dsic, Cassette, 3/8" Nutted 150mm
Spokes 14g Stainless Steel
Rims DB75mm Wide w/28mm cutout, singlewall 32h
Tires Chaoyang Cruiser 26"x4.0"
Brakes Tektro Mira Mechanical Disc, 160mm/160mm Rotor
Brake Levers Tektro RAL84A
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 Alloy 27.2mm
Extras Owner's Manual
Bike Weight 37 lb 15 oz (size medium no pedals)
Accessories El Oso Butted Heat Treat Steel 1-1/8"Headtube, 150mm Rear OLD, 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 450mm 500mm
Stand Over Height 787mm 804mm 820mm
Top Tube Length 580mm 609mm 630mm
Stack 596mm 606mm 605mm
Reach 409mm 435mm 456mm
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
BB Height 60mm 60mm 60mm
Stem Length
Handlebar Width
Crank Length
Seat Post Length

Customer Reviews Write Your Own

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Overall Quality

Great Bike

Review by Matt
Overall Quality

This is my favorite bike, I am using it unconventionally and have added a rack and baskets to the sides and top of the rear rack. I ride this through my pasture and use it to haul feed to goats. It is also fun for just ridding around. The only issue I had was stopping power, I had to change out the brakes for better ones.

(Posted on 6/22/2017)
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