Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Specialized
2018 Specialized Demo 8 I Carbon
Value Guide market data · 2018 Specialized Demo 8 I Carbon
12-month trend
8%
Direction and magnitude, not judgment
vs. category average
7%
Holds value better than category avg
Price over time - 2018 Specialized Demo 8 I Carbon
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Demo model years
2025$6,603 - $7,668▼ 5% vs. 2018
2024$6,603 - $7,668▼ 5% vs. 2018
2023$6,603 - $7,668▼ 5% vs. 2018
2022$6,603 - $7,668▼ 5% vs. 2018
2021$6,510 - $7,560▼ 7% vs. 2018
2020$6,045 - $7,020▼ 13% vs. 2018
2018$6,975 - $8,100Currently viewing
2017$6,975 - $8,1000% vs. 2018
2016$8,370 - $9,720▲ 20% vs. 20182015$8,370 - $9,720▲ 20% vs. 2018
2014$7,905 - $9,180▲ 13% vs. 2018
2013$9,300 - $10,800▲ 33% vs. 2018
2012$6,138 - $7,128▼ 12% vs. 2018
2011$5,952 - $6,912▼ 15% vs. 2018
2010$5,115 - $5,940▼ 27% vs. 2018
2009$5,673 - $6,588▼ 19% vs. 2018
2008$5,859 - $6,804▼ 16% vs. 2018
2006$3,534 - $4,104▼ 49% vs. 2018
2005$4,557 - $5,292▼ 35% vs. 2018
2004$4,836 - $5,616▼ 31% vs. 20182018 Demo 8 I Carbon lineup
Overview
About this bike
2018 Specialized Demo 8 I Carbon value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- FRAME
- FACT 10m carbon, S3 Geometry, carbon front triangle and seatstay, new Team alloy link, FACT IS construction, BB30, full internal cable routing, 135mm dropouts, lipped and sealed cartridge bearing pivots, replaceable derailleur hanger, 200mm of travel
- REAR SHOCK
- Custom Öhlins TTX, Twin-Tube design, high- and low-speed compression adjust, rebound adjust, 9.5x3"
- FORK
- RockShox BoXXer Team 27.5, coil spring, S: Extra soft spring, M: Soft spring, L: Medium spring, XL: Firm spring, 200mm of travel, Charger Damper, compression adjust, rebound adjust, alloy steerer, 48mm offset, Maxle Lite DH
Drivetrain
- Groupset
- 2018 Specialized Demo 8 I Carbon
- REAR DERAILLEUR
- SRAM GX, Type 2.1, short cage
- SHIFT LEVERS
- SRAM X7, trigger
- CASSETTE
- SRAM PG-1030, 10 speed, 11-36 last three cogs removed
- CHAIN
- SRAM PC-1031, 10-speed w/ PowerLink
- CRANKSET
- Custom SRAM Descendant, BB30, 7050 alloy arms w/ Gamut bashguard, 165mm
- CHAINRINGS
- SRAM, 36T
- BOTTOM BRACKET
- SRAM BB30, 83mm
- Shifters
- SRAM X7, trigger
Brakes
- FRONT BRAKE
- SRAM Code R, 4-piston caliper, hydraulic disc, metallic pads, 200mm rotor
- REAR BRAKE
- SRAM Code R, 4-piston caliper, hydraulic disc, metallic pads, 180mm rotor
- Brakes
- Front: SRAM Code R, 4-piston caliper, hydraulic disc, metallic pads, 200mm rotor , Rear: SRAM Code R, 4-piston caliper, hydraulic disc, metallic pads, 180mm rotor
Cockpit
- SEAT BINDER
- Alloy, 36.9mm
- STEM
- Specialized Direct Mount DH Stem, two-piece, forged alloy, 45mm
- HANDLEBARS
- Specialized DH, 7050 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 800mm, 31.8mm clamp
- GRIPS
- Specialized Sip Grip, half-waffle, S/M: regular thickness, L/XL: XL thickness
- SADDLE
- Body Geometry Phenom Comp, hollow Cr-Mo rails, 143mm
- SEATPOST
- Specialized, 6061 alloy, 2-bolt clamp, 0mm setback, 30.9mm
- Handlebar
- Specialized DH, 7050 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 800mm, 31.8mm clamp
Wheels & Tires
- RIMS
- Roval 27.5, alloy, 24mm internal width
- FRONT HUB
- Specialized disc, alloy flange & disc mount, sealed cartridge bearings, 20mm thru-axle, 32h
- REAR HUB
- Specialized, sealed cartridge bearings, 12x135mm spacing, 32h
- SPOKES
- DT Swiss Industry, stainless, 3-cross, 2.0"
- FRONT TIRE
- Butcher, DH casing, 27.5 b x2.5", 60 TPI, wire bead
- REAR TIRE
- Butcher, DH casing, 27.5 b x2.3", 60 TPI, wire bead
- INNER TUBES
- Standard, Presta valve
- Axles
- Front: 20mm thru-axle , Rear: 12x135mm thru-axle
- Hubs
- Specialized
Pedals
- PEDALS
- Specialized Bennies, 6061 alloy body, sealed cartridge bearings, 4.5mm removable pins
Frame sizing
XS4'10"-5'2"
S5'2"-5'6"
M5'6"-5'10"
L5'10"-6'2"
XL6'2"-6'6"
M highlighted as most common resale size. Sourced from catalog metadata.
Geometry
- Stack
- Varies by size
- Reach
- Varies by size
- Wheelbase
- Varies by size
Industry standard. Sourced from catalog metadata.
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Wheel condition
Inspect rims, hubs, spokes, and bearing play; ask about the tire age and any prior wheel rebuilds.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.
Inspection
Suspension service
Confirm fork lowers and rear shock service intervals; ask for the most recent service receipts.
Inspection
Frame pivots & bearings
Cycle the suspension off the bike to feel for play, grit, or noise in pivot bearings.