Skip to main content

Cogburn CB4

Cogburn CB4
This item is currently not available.

Details

This is the CB4. CB4 is a fatbike, a human powered all-terrain vehicle built to take hunters, anglers and foragers quickly and quietly further into the backcountry. Its massive 3.8”-wide tires run at very low pressure to provide flotation and amazing traction over rough or soft terrain.

The frame and fork receive a tough RealTree Xtra® camouflage finish and the components are anodized black and bead blasted to a no-glare finish.

CB4 is equipped with full range gearing, all-condition disc brakes and a wide handlebar for control even while loaded. The frame has attachment points for a rear rack and water or fuel bottles cages. The fork has additional attachment points to expand carrying capacity. We’re proud to say the CB4 is designed, finished and assembled in the USA.

The frame's lowered top tube maximizes stand over clearance and rider comfort, making it easy to mount and dismount. The frame is engineered to ensure an efficient, responsive ride and stable handling, evan at low speed.

The frame is made of high quality heat-treated, double-butted A6N-6000AL tubing. Superior design and workmanship result in a high quality bike that is light, strong and responsive so you can go everywhere your hunts takes you.

The frame’s rear tubes maximize heel clearance while wearing boots and carrying cargo. The rear hub spacing and tube design provide clearance for fat tires without the need to ‘dish’ them outboard for tire clearance at the chain. The result is a strong wheel and a durable, efficient drivetrain.

Full length housing for brakes and shifters protects the cables to ensure they perform even in wet, muddy, dusty conditions…exactly the kind of conditions you’re likely to encounter.

TIG-welded attachment points on the frame’s rear end allow the addition of a rack. Carrying your gear on the bike and not your back results in greater agility and less fatigue for longer hours in the field.

The CB4 frame has attachment points for 1, 2, or 3 standard water bottle cage mounts, depending on the space available on each frame size (larger frames have more bottle mounts, smaller ones have less). The fork has 2 sets of triple-boss attachment points, one on each leg, for oversize cages on the fork to expand carrying capacity for water, stove fuel, sleeping pads and other gear.

Specs

Frame High quality heat-treated, double-butted A6N-6000AL tubing
Rear Shock N/A
Rims/Wheels Surly 82mm-wide Rolling Darryl rims, DT Swiss stainless steel spokes, Built and finished by hand in the USA
Hubs Formula sealed-bearing hubs front and rear
Spokes DT Swiss stainless steel
Tires Surly Nate 26x3.8” tires
Crankset SRAM X5 GXP100, 175mm crank with sealed bearings, 22/36t gearing
Chainwheel 22/36
Bottom Bracket Sram sealed bearing
Chain KMC 10-speed
Front Derailleur Shimano Deore 2 x 10 Speed
Rear Derailleur Shimano Deore Shadow Plus 10 Speed
Rear Cogs Shimano Deore – 10-speed, 11/36t gearing
Shifters Shimano Deore 2 x 10 Speed
Handlebars 750mm width, 20mm rise, 11° sweepback
Tape/Grips Knurled rubber, Black
Stem Kalloy. +7° x 90 mm length, Bead-blasted finish, Black
Brake Levers Avid FR5 levers
Brakes Avid BB7 cable actuated disc brakes, 160mm stainless rotors, Avid FR5 levers
Pedals Wellgo platform type, Black
Saddle Velo, Foam padded with vinyl cover, Black
Seat Post Kalloy, 31.6 diameter, 400mm length, Bead-blasted finish, Black
Seat Binder Kalloy, 34.9mm I.D., Bead-blasted finish
Color(s) RealTree Xtra® camouflage
Sizes SM/MD, LG/XL

* Subject to change without notice.

Videos

Cogburn CB4 Fat Bike Features

Introducing Cogburn Outdoors

Part Numbers

Option UPC Store SKU
Camo / SM/MD 708752098763 9780
Camo / LG/XL 708752098770 9782

Reviews

Related Items