Velopedia Bicycle Archive
2015 Specialized Demo 8 I
Original specifications: SRAM X9 · 10-speed · mechanical rear derailleur · 27.5 wheels.
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At a glance
- Model year
- 2015
- Category
- Mountain
- Original MSRP
- $4,600.00
- Sizes
- M, Long, X-Long
- Colors
- Satin Black/Charcoal, Gloss Hyper/Deep Blue
- In this record
- 25 specifications · original MSRP
- Archive ID
- 1102151
Model history 5 other years
Original buildAluminum · DH mix · 27.5
Frameset
| Frame Construction | M5 manipulated alloy, 650b S3 Geometry, 1.5" forged headtube, 135mm rear spacing, compact race design, ISCG '05 mount, cartridge bearing rear shock mount, rear derailleur protector, 200mm travel |
|---|---|
| Frame Material | Aluminum |
| Fork | RockShox Boxxer RC 650b, alloy steerer, compression and rebound adj., 20mm Maxle DH thru-axle, M: soft spring, L/XL: medium spring, 200mm travel |
| Fork Material | Suspension |
| Rear Shock | Custom FOX VAN RC, coil w/ piggy back, compression and rebound adj., 9.5x3", XS: 350, S: 400, M: 450, L: 500 |
Drivetrain
| Component Group | DH mix |
|---|---|
| Shifters | SRAM X7, 10-speed, w/ MatchMaker clamp |
| Front Derailleur | None |
| Rear Derailleur | SRAM X9 Type 2, 10-speed, mid cage |
| Crankset | Custom SRAM Descendant, PF30 spindle, alloy arms, 165mm, 36T ring, w/ Gamut bashguard |
| Bottom Bracket | SRAM, PF30 to BSA 83mm adapter |
| Rear Cogs | SRAM PG 1030, 10-speed, 11-25 |
| Chain | SRAM PC 1031, 10-speed, w/ PowerLink, nickel finish |
| Pedals | Specialized Bennies, 6061 alloy body, sealed cartridge, 4.5mm removable pins |
Brakes
| Brakes | SRAM Guide R, metallic pads, Guide R caliper, 200mm Centerline rotor, SRAM Guide R, metallic pads, Guide R caliper, 180mm Centerline rotor |
|---|
Cockpit & Contact Points
| Headset | 1-1/2" semi-integrated for 1-1/8" steerer, cartridge bearings |
|---|---|
| Handlebar | Specialized Demo, low rise, 6061 alloy, 9-degree backsweep, 6-degree upsweep, 31.8mm |
| Stem | Specialized P.Series MTB, forged alloy, 4-bolt |
| Saddle | Body Geometry Phenom Comp, hollow Cr-Mo rails, 143mm |
| Seatpost | Specialized 6061 alloy, 2-bolt, 0mm setback, 30.9mm |
Wheels & Tires
| Hubs | Specialized Hi Lo disc, sealed cartridge bearings, 20mm thru-axle, 36h, Specialized Hi Lo disc, hollow Cr-Mo axle, 32h |
|---|---|
| Rims | Roval 650b DH, alloy, 24mm inner width, w/ eyelets, 32h |
| Spokes | DT Swiss Industry, stainless |
| Front Tire | Specialized Butcher DH, 60TPI, wire bead, dual compound, 650bx2.5", Specialized Slaughter DH, 60TPI, wire bead, dual compound, 650bx2.3" |
| Wheel Size | 27.5 |
Gearing
Lower ratios provide more mechanical advantage for climbing. Higher ratios turn the rear wheel farther with each crank revolution.
Parts & serviceability
Find replacement parts
More parts (5)

ENVE Twin Bolt Seatpost - Zero Offset UD Carbon, 30.9x400mm
30.9x400mm
Replacement option · verify fit
Based on the original build. Confirm the model, size and fit before ordering; installed parts may differ. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases.
Bike-specific inspection checklist 22 checks based on 6 archived component groups Open checklistClose checklist
This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.
Identity and fit
Follow the full used-bike inspection order →Archived: 2015 Specialized Demo 8 I · Mountain Dual Suspension · Published sizes: M, Long, X-Long
Frame and fork
Inspect the frame and fork →Archived: Frame: M5 manipulated alloy, 650b S3 Geometry, 1.5" forged headtube, 135mm rear spacing, compact race design, ISCG '05 mount, cartridge bearing rear shock mount, rear derailleur protector, 200mm travel · Fork: RockShox Boxxer RC 650b, alloy steerer, compression and rebound adj., 20mm Maxle DH thru-axle, M: soft spring, L/XL: medium spring, 200mm travel · Suspension
Suspension
Evaluate the suspension →Archived: Fork: RockShox Boxxer RC 650b, alloy steerer, compression and rebound adj., 20mm Maxle DH thru-axle, M: soft spring, L/XL: medium spring, 200mm travel · Rear shock: Custom FOX VAN RC, coil w/ piggy back, compression and rebound adj., 9.5x3", XS: 350, S: 400, M: 450, L: 500
Drivetrain
Check drivetrain wear →Archived: Group: DH mix · Shifters: SRAM X7, 10-speed, w/ MatchMaker clamp · Rear derailleur: SRAM X9 Type 2, 10-speed, mid cage · Crankset: Custom SRAM Descendant, PF30 spindle, alloy arms, 165mm, 36T ring, w/ Gamut bashguard · Bottom bracket: SRAM, PF30 to BSA 83mm adapter · Rear cogs: SRAM PG 1030, 10-speed, 11-25 · Chain: SRAM PC 1031, 10-speed, w/ PowerLink, nickel finish
Brakes
Inspect the brakes →Archived: Brakes: SRAM Guide R, metallic pads, Guide R caliper, 200mm Centerline rotor, SRAM Guide R, metallic pads, Guide R caliper, 180mm Centerline rotor
Wheels and tires
Check wheels and tires →Archived: Wheel size: 27.5 · Rims: Roval 650b DH, alloy, 24mm inner width, w/ eyelets, 32h · Hubs: Specialized Hi Lo disc, sealed cartridge bearings, 20mm thru-axle, 36h, Specialized Hi Lo disc, hollow Cr-Mo axle, 32h · Front tire: Specialized Butcher DH, 60TPI, wire bead, dual compound, 650bx2.5", Specialized Slaughter DH, 60TPI, wire bead, dual compound, 650bx2.3"
Controls and contact points
Archived: Headset: 1-1/2" semi-integrated for 1-1/8" steerer, cartridge bearings · Handlebar: Specialized Demo, low rise, 6061 alloy, 9-degree backsweep, 6-degree upsweep, 31.8mm · Stem: Specialized P.Series MTB, forged alloy, 4-bolt · Seatpost: Specialized 6061 alloy, 2-bolt, 0mm setback, 30.9mm · Saddle: Body Geometry Phenom Comp, hollow Cr-Mo rails, 143mm · Pedals: Specialized Bennies, 6061 alloy body, sealed cartridge, 4.5mm removable pins
Before and during the test ride
Follow the full used-bike inspection order →Have you owned this bike?Help document firsthand fit, ride and maintenance details that may no longer be available.
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.




