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Jamis Roughneck

Jamis Roughneck
Cosmic Dust
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There is no off season. The Roughneck is a true fat bike with 26x4.5” tires giving it the capability to oat over snow, sand and soft mud with maximum traction and ease. Plenty of water bottle, cargo and rack mounts on the frame and fork provide versatility for loading up for any expedition. What’s stopping you now?


Frame Triple-butted 6061 air-formed aluminum, 1.5 - 1 1/8” tapered head tube, post mount disc brakes, 100mm bottom bracket shell, rack mounts, internal cable routing, dropper seat post routing, replaceable derailleur hanger
Fork Triple-butted 6061 air-formed aluminum, suspension corrected, tapered steerer, post-mount disc, rack/bottle mounts
Headset FSA Orbit, Alloy cups
Axles Front: 15x150mm hub spacing; Rear: 12x197mm rear hub spacing
Rims/Wheels Sun Ringle MuleFut 80 Comp, STR Tubeless Ready
Spokes Wheelsmith spokes, Brass nipples
Tires Kenda Juggernaut Sport, 26 x 4.5", 60 tpi, folding
Crankset FSA Comet
Chainrings 36/22T
Bottom Bracket FSA MegaExo
Chain KMC X10 EPT (Anti-Rust), 10-speed
Front Derailleur Shimano Deore
Rear Derailleur Shimano Deore Shadow
Rear Cogs Shimano HG50, 10-speed, 11-36T
Shifters Shimano Deore, 2x10-speed
Handlebars Ritchey Trail, 740mm x 20mm rise
Tape/Grips Jamis Lock-On
Stem Ritchey Trail
Brake Levers TRP
Brakes TRP Spyke 2-piston Mechanical, 180mm front & 160mm rear 6-bolt rotors
Pedals ATB alloy platform
Saddle WTB Volt Sport
Seat Post Ritchey Trail Comp

* Subject to change without notice.


Part Numbers

Option UPC MPN Store SKU
Cosmic Dust / 15-inch 845436019567 03-0740-BL 4283