Jamis Defcon 1 - 2018

Jamis Defcon 1
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This is where the 27.5” wheel size really shines: on a 160mm travel all-mountain enduro machine. Utilizing our proven mp4 suspension for pedaling efficiency, with modern geometry and top-level suspension to tackle bigger hits and aggressive descents at higher speeds. This progressive suspension design delivers plush rear wheel traction while still resisting bottom out. Rear thru-axles, short chainstays and roomy front centers provide stiffness, quick cornering and playful handling. If you want to do it all, fast, this is the bike.


Frame Triple-butted 6061 air-formed aluminum, 160mm travel mp4 suspension, Enduro® Max sealed bearing pivots, 1.5 - 1 1/8” tapered head tube, asymmetrical chainstays, dropper post routing, ISCG05 chainguide mounts, 10mm hardware, replaceable derailleur hanger, Rock Shox Maxle rear axle
Fork Fox 36 Float Factory Series 27.5" w/3-position compression, Open Mode Adjust & Kashima coating, air spring, rebound adjust, tapered alloy steerer, 160mm travel
Rear Shock Fox Float X Factory Series EVOL shock w/3-position compression, Open Mode Adjust & Kashima coating,
Headset FSA Orbit 1.5 Zero-Stack internal cup, 8mm cone spacer
Rims/Wheels Front: 15x110mm thru-axle; Rear: 12x142mm thru-axle
Hubs Stan's NoTubes Flow MK3 Team 27.5" tubeless wheels
Spokes Neo Series hubs
Tires Sapim Race spokes
Crankset Vittoria Goma 27.5 x 2.4" front & 2.25” rear, TNT tubeless
Chainrings Shimano XT, 11 speed
Bottom Bracket 32T
Chain Enduro® BSA
Front Derailleur KMC X11SL-1 DLC, 11-speed
Rear Cogs Shimano XT Shadow Plus, 11-speed
Shifters Shimano XT M8000, 11-speed, 11-46T
Handlebars Shimano XT, 1x11-speed
Tape/Grips Answer ProTaper Riser, 780mm x 25mm rise, 31.8 mm diameter
Stem Jamis Lock-On
Brake Levers Answer ATAC AME
Brakes Shimano Saint
Pedals Shimano Saint M820 hydraulic disc, Ice-Technology pads & 180mm RT86 Ice-Technology 6-bolt rotors
Saddle N/A
Seat Post WTB Volt Comp
Accessories & Extras KS LEV DX, 125mm travel, Southpaw remote


Part Numbers

Option UPC MPN
Limelight / 15-inch 845436018478 03-0631 : 03-0631LI
Limelight / 17-inch 845436018485 03-0631 : 03-0632LI
Limelight / 19-inch 845436018492 03-0631 : 03-0633LI
Limelight / 21-inch 845436018508 03-0631 : 03-0634LI


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