Specialized Demo 8 I

2011 MountainDownhill Manufacturer page

Fork travel: 200 mm
Wheels: 26″
Drivetrain: 1 × 9 36t / 12–26t
Gear range: 217%
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 151–164
SM 159–170
MD 165–177
LG 171–184

Components

20 of 23 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

M5 manipulated alloy, compact race design, 1.5"" forged HT, Magnesium link, ISCG 05 mount, cartridge bearing rear shock mount, rear derailleur protector, 8"" travel Not identified

Suspension

2 parts

Drivetrain

6 parts

Bottom bracket
- SRAM PressFit 30
PF-30
Cassette
- SRAM PG-970 9 speeds 12–26t
PG-970
Chain
- SRAM PC-971 9 speeds
PC-971
Crankset
- Truvativ DESCENDANT 36t
Rear derailleur
- SRAM
Shifters
- SRAM

Brakes

2 parts

Wheels and tires

5 parts

Cockpit and contact points

7 parts

Grips
- Specialized
Handlebar
- Specialized
Headset

1.5"" integrated for 1 1/8"" steerer, cartridge bearings Not identified
Pedals
- Specialized
Saddle
- Specialized
Seatpost

6061 alloy, two bolt micro adjust, no offset, 30.9mm, 300mm Not identified
Stem
- Specialized

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size SM

Table

Reach 410mm

Stack 593mm

Wheelbase 1171mm

Head angle 64.8°

Seat angle 76.8°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 26″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	390	410	430	447
Stackmm	593	593	593	593
Top tube lengthmm	540	560	580	597
Seat tube lengthmm	394	394	419	458
Head tube lengthmm	112	112	112	112
Head tube angle	64.8°	64.8°	64.8°	64.8°
Seat tube angle	76.8°	76.8°	76.8°	76.8°
Chainstay lengthmm	421	421	421	421
Wheelbasemm	1151	1171	1191	1208
Front centermm	730	750	770	787
Bottom bracket dropmm	-10	-10	-10	-10
Bottom bracket heightmm	353	353	353	353
Standover heightmm	717	717	722	731
Fork rakemm	51	51	51	51
Trailmm	105	105	105	105
Stack/reach ratio	1.52	1.45	1.38	1.33
Suspension and parts
Crank lengthmm	165	165	165	165
Handlebar widthmm	750	750	750	750
Stem lengthmm	50	50	50	50
Seatpost lengthmm	300	300	300	300

Not published by the manufacturer: Front travel, Rear travel, Stem angle and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Fork material: Aluminum

Suspension

Suspension configuration: Full suspension
Front travel: 200 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 36
Largest chainring: 36
Rear sprockets: 9
Smallest sprocket: 12
Largest sprocket: 26
Lowest gear: 36.0 in
Highest gear: 78.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: PF30
Fork spring: Air
Rear shock spring: Coil
Tire width: 2.3″
Wheel material: Aluminum
Wheel size: 26″

Gearing

Estimated speeds at 80 rpm

Lowest gear: 13.8 km/h
Highest gear: 29.9 km/h

Total gear range 217%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.