Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Specialized
2015 Specialized Demo 8 I
Value Guide market data · 2015 Specialized Demo 8 I
12-month trend
1%
Direction and magnitude, not judgment
vs. category average
19%
Holds value better than category avg
Price over time - 2015 Specialized Demo 8 I
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▼ 21% vs. 2015
2024$6,603 - $7,668▼ 21% vs. 2015
2023$6,603 - $7,668▼ 21% vs. 2015
2022$6,603 - $7,668▼ 21% vs. 2015
2021$6,510 - $7,560▼ 22% vs. 2015
2020$6,045 - $7,020▼ 28% vs. 2015
2018$6,975 - $8,100▼ 17% vs. 2015
2017$6,975 - $8,100▼ 17% vs. 2015
2016$8,370 - $9,7200% vs. 20152015$8,370 - $9,720Currently viewing
2014$7,905 - $9,180▼ 6% vs. 2015
2013$9,300 - $10,800▲ 11% vs. 2015
2012$6,138 - $7,128▼ 27% vs. 2015
2011$5,952 - $6,912▼ 29% vs. 2015
2010$5,115 - $5,940▼ 39% vs. 2015
2009$5,673 - $6,588▼ 32% vs. 2015
2008$5,859 - $6,804▼ 30% vs. 2015
2006$3,534 - $4,104▼ 58% vs. 2015
2005$4,557 - $5,292▼ 46% vs. 2015
2004$4,836 - $5,616▼ 42% vs. 20152015 Demo 8 I lineup
Overview
About this bike
2015 Specialized Demo 8 I value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- REAR SHOCK
- {XS=350, S=400, M=450, L=500}
- Fork
- RockShox Boxxer RC, 200mm travel, 20mm thru-axle
- Frame
- Specialized FSR M5-aluminum, 650b S3 Geometry, 1.5" forged headtube, 135mm rear spacing, ISCG '05 mount, 200mm travel
Drivetrain
- Groupset
- 2015 Specialized Demo 8 I
- REAR DERAILLEUR
- SRAM X9 Type 2, 10-speed, mid cage
- SHIFT LEVERS
- SRAM X7, 10-speed, w/ MatchMaker clamp
- CASSETTE
- SRAM PG 1030, 10-speed, 11-25
- CHAIN
- SRAM PC 1031, 10-speed, w/ PowerLink, nickel finish
- CRANKSET
- Custom SRAM Descendant, PF30 spindle, alloy arms, 165mm, 36T ring, w/ Gamut bashguard
- BOTTOM BRACKET
- SRAM, PF30 to BSA 83mm adapter
- Chainrings
- 36T
- Shifters
- SRAM X7
Brakes
- BRAKE LEVERS
- SRAM Guide R, alloy lever, w/ reach adjust
- FRONT BRAKE
- SRAM Guide R, metallic pads, Guide R caliper, 200mm Centerline rotor
- REAR BRAKE
- SRAM Guide R, metallic pads, Guide R caliper, 180mm Centerline rotor
- Brakes
- SRAM Guide R, 200/180mm Centerline rotors
Cockpit
- HEADSET
- 1-1/2" semi-integrated for 1-1/8" steerer, cartridge bearings
- STEM
- Specialized P.Series MTB, forged alloy, 4-bolt
- HANDLEBARS
- Specialized Demo, low rise, 6061 alloy, 9-degree backsweep, 6-degree upsweep, 31.8mm
- GRIPS
- Specialized Sip Grip, light lock-on, half-waffle, S/M: regular thickness, Others: XL
- SADDLE
- Body Geometry Phenom Comp, hollow Cr-Mo rails, 143mm
- SEATPOST
- Specialized 6061 alloy, 2-bolt, 0mm setback, 30.9mm
- SEAT BINDER
- Specialized 7050 alloy, single bolt, 34.9mm
- Handlebar
- Specialized Demo low-rise
Wheels & Tires
- RIMS
- Roval 650b DH, alloy, 24mm inner width, w/ eyelets, 32h
- FRONT HUB
- Specialized Hi Lo disc, sealed cartridge bearings, 20mm thru-axle, 36h
- REAR HUB
- Specialized Hi Lo disc, hollow Cr-Mo axle, 32h
- SPOKES
- DT Swiss Industry, stainless
- FRONT TIRE
- Specialized Butcher DH, 60TPI, wire bead, dual compound, 650bx2.5"
- REAR TIRE
- Specialized Slaughter DH, 60TPI, wire bead, dual compound, 650bx2.3"
- INNER TUBES
- Ultralight, presta valve
- Hubs
- Specialized Hi Lo disc
- Tires
- Specialized; Front: Butcher DH, 650b x 2.5; Rear: Slaughter DH, 650b x 2.3
- Wheel Set
- Roval DH 650b
Pedals
- PEDALS
- Specialized Bennies, 6061 alloy body, sealed cartridge, 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.