Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Jamis
2018 Jamis Defcon 3
Previous used estimate
$759 - $781
Actual value depends on condition, size, and local demand.
Value Guide market data · 2018 Jamis Defcon 3
12-month projected trend
7%
Direction and magnitude, not judgment
vs. category average
3%
Drops faster than category avg
Price over time - 2018 Jamis Defcon 3
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Defcon model years
Compare Defcon 3 models
1 modelsChoose a different build or frame style to see its value.
Overview
About this bike
This is where the 27.5” wheel size really shines: on a 160mm travel all-mountain enduro machine that utilizes Jamis' 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 a roomy front-center provide stiffness, quick cornering and playful handling. If you want to do it all and fast, this is the bike.
Specifications
- Subtype
- Trail / Enduro
- Category
- Mountain
- Component Fork
- X-Fusion Sweep Roughcut RCP 27.5" w/ 3-position compression, air spring compression & lock-out, rebound adjust, tapered alloy steerer, 34mm uppers,160mm travel
- Component Hubs
- Formula sealed bearing 6-bolt hubs
- Component Size
- 15-inch, 17-inch, 19-inch, 21-inch
- Component Stem
- Answer ATAC AME, 50mm extension, 31.8mm clamp diameter
- Product Family
- Defcon
- Component Axles
- Front: 15x100mm thru-axle; Rear: 12x142mm thru-axle
- Component Chain
- KMC X11-1 EPT (Anti-Rust), 11-speed
- Component Color
- Raw Aluminum
- Component 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, Formula axle
- Component Brakes
- TRP Slate T4 4-piston hydraulic disc, 180mm 2-piece rotors
- Component Pedals
- N/A
- Component Saddle
- WTB Volt Sport
- Component Headset
- FSA Orbit 1.5 Zero-Stack internal cup, 8mm cone spacer
- Component Crankset
- SRAM NX,
- Component Shifters
- SRAM NX, 1x11-speed
- Component Handlebar
- Answer ProTaper Riser, 780mm x 25mm rise, 31.8 mm diameter
- Component Seat Post
- KS eTen, 100mm travel, Southpaw remote
- Component Chainrings
- 32T
- Component Front Tire
- Vittoria Goma 27.5 x 2.4" front & & 2.25” rear, TNT tubeless
- Component Rear Shock
- X-Fusion O2 Pro RLX High Volume air shock w/3-position compression,
- Component Tape Grips
- Jamis Lock-On
- Component Brake Levers
- TRP Slate
- Component Bottom Bracket
- Enduro® BSA
- Component Rear Derailleur
- SRAM NX, 11-speed
- Rear Shock
- X-Fusion O2 Pro RLX High Volume air shock w/3-position compression,
- Hubs
- Formula sealed bearing 6-bolt hubs
- Crankset
- SRAM NX,
- Pedals
- N/A
- Bottom Bracket
- Enduro® BSA
- Chain
- KMC X11-1 EPT (Anti-Rust), 11-speed
- Saddle
- WTB Volt Sport
- Handlebar
- Answer ProTaper Riser, 780mm x 25mm rise, 31.8 mm diameter
- Headset
- FSA Orbit 1.5 Zero-Stack internal cup, 8mm cone spacer
- Rear Derailleur
- SRAM NX, 11-speed
- Stem
- Answer ATAC AME, 50mm extension, 31.8mm clamp diameter
- Axles
- Front: 15x100mm thru-axle; Rear: 12x142mm thru-axle
- Brake Levers
- TRP Slate
- Brakes
- TRP Slate T4 4-piston hydraulic disc, 180mm 2-piece rotors
- Chainrings
- 32T
- Fork
- X-Fusion Sweep Roughcut RCP 27.5" w/ 3-position compression, air spring compression & lock-out, rebound adjust, tapered alloy steerer, 34mm uppers,160mm travel
- 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, Formula axle
- Seat Post
- KS eTen, 100mm travel, Southpaw remote
- Shifters
- SRAM NX, 1x11-speed
- Tape/Grips
- Jamis Lock-On
- Color
- Raw Aluminum
- Size
- 21-inch
- Front Tire
- Vittoria Goma 27.5 x 2.4" front & & 2.25” rear, TNT tubeless
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.
Inspection
Suspension service
Confirm fork and rear shock service intervals and check pivot bearings for play.