Velopedia Bicycle Archive
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Compare published geometry, gearing and specifications for up to three bicycles.
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1 of 2 bicycles
At a glance
Key differences
Supported differences are shown below. Data limitations are labeled separately.
- Gearing
2021 Specialized Demo Expert has a 12% lower climbing ratio than 2023 Specialized Demo Expert.
A lower ratio gives more mechanical advantage; rear-wheel rollout determines distance per crank turn.
Selected-size geometry
Geometry overlay
Frames share one scale and a bottom-bracket alignment. Size labels differ by brand; schematic drawing aids are identified below.
Gearing comparison
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
Lowest1.25:1Highest2.73:1Total range218%
Estimated speed at 90 RPMLowest gearHighest gear
Rear tire: 27.5×2.3.
Lowest1.42:1Highest3.09:1Total range218%
Estimated speed at 90 RPMLowest gearHighest gear
Rear tire: 27.5×2.3.
How it works
Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.
Speeds are estimates from tire size and pedal cadence. Actual speeds vary.
Complete specification tableShows different published values and gaps where a bicycle lacks data. Different wording reflects source language, not necessarily different components. Swipe for more columns.
Specification
2021 Specialized Demo Expert
2023 Specialized Demo Expert
Overview
Model Year
2021
2023
Brand
Specialized
Specialized
Model
Demo Expert
Demo Expert
Bicycle Type
Mountain
Mountain
Original MSRP
$5,500.00
$5,600.00
Colors
Gloss Smoke / Black / Cool Grey
Satin Desert Rose / Dune White, Gloss Metallic Dark Navy / Dark Navy / Harvest Gold Metallic
Sizes
S2, S3, S4
S2, S3, S4
Weight
—
17.87kg (39 lb, 6.3 oz)
Frameset
Frame Construction
M5 alloy, Style-Specific DH Geometry, horst pivot flip chip for 27.5 or 29 rear wheel, BSA threaded BB, full internal cable routing with option for full external brake, 148mm rear spacing, sealed cartridge bearing pivots, replaceable derailleur hanger, 200mm of travel
M5 alloy, Style-Specific DH Geometry, horst pivot flip chip for 27.5 or 29 rear wheel, BSA threaded BB, full internal cable routing with option for full external brake, 148mm rear spacing, sealed cartridge bearing pivots, replaceable derailleur hanger, 200mm of travel
Frame Material
Aluminum
Aluminum
Fork
RockShox BoXXer Select 29, DH DebonAir spring, adjustable low-speed compression, adjustable rebound, short crown, 20x110mm thru-axle, 56mm offset, 200mm of travel
RockShox BoXXer Select 29, DH DebonAir spring, adjustable low-speed compression, adjustable rebound, short crown, 20x110mm thru-axle, 56mm offset, 200mm of travel
Rear Shock
RockShox Super Deluxe Select Coil, external rebound adjust, Trunnion mount, 225x75
RockShox Super Deluxe Select Coil, external rebound adjust, hydraulic bottom out, Trunnion mount, 225x75
Drivetrain
Shifters
SRAM GX DH, trigger, 7-speed
SRAM GX DH, trigger, 7-speed
Rear Derailleur
SRAM GX DH, 7-speed, trigger
SRAM GX DH, 7-speed, trigger
Crankset
DESCENDANT DH, DUB, alloy, Direct mount ring, 165mm; chainrings: Steel, 30T
DESCENDANT DH, DUB, alloy, Direct mount ring, 165mm; chainrings: 34T
Bottom Bracket
SRAM DUB, 83mm
SRAM DUB, 83mm
BB Shell Width
83 mm
83 mm
Cassette
SRAM GX DH, 7-speed, 11-24t
SRAM GX DH, 7-speed, 11-24t
Chain
SRAM PC1110 w/ Powerlink™
SRAM PC1110 w/ Powerlink™
Brakes
Brakes
(F) SRAM Code RS, 4-piston caliper, hydraulic disc, 200mm / (R) SRAM Code RS, 4-piston caliper, hydraulic disc, 200mm
(F) SRAM Code RS, 4-piston caliper, hydraulic disc, 220mm / (R) SRAM Code RS, 4-piston caliper, hydraulic disc, 200mm
Cockpit & Contact Points
Handlebar
Specialized, 7050 alloy, 6-degree upsweep, 8-degree backsweep, 27mm rise, 800mm width
Specialized Trail, 7050 alloy, 8-degree backsweep, 6-degree upsweep, 30mm rise, 800mm, 35mm clamp
Stem
Specialized Direct Mount DH Stem, two-piece, forged alloy, 45mm
Descendant 35mm Direct Mount Stem, 50mm length
Saddle
Body Geometry Henge DH, hollow Cro-Mo rails, 130mm
Body Geometry Henge DH, hollow Cro-Mo rails, 130mm
Seatpost
Specialized, 6061 alloy, 2-bolt clamp, 0mm setback, 30.9mm
Specialized, 6061 alloy, 2-bolt clamp, 0mm setback, 30.9mm
Wheels & Tires
Hubs
(F) Alloy, sealed cartridge bearings, 20x110mm, 28h / (R) Alloy, sealed cartridge bearings, 12x148mm thru-axle, 32h
(F) Alloy, sealed cartridge bearings, 20x110mm, 28h / (R) Alloy, sealed cartridge bearings, 12x148mm thru-axle, 32h
Rims
Roval 29" Alloy DH, 28mm internal width, 28h, tubeless ready
Roval 29" Alloy DH, 28mm internal width, 28h, tubeless ready
Spokes
DT Swiss Industry
DT Swiss Industry
Front Tire
Butcher BLCK DMND, 29x2.3"
Butcher, GRID GRAVITY casing, GRIPTON® T9 compound, 2Bliss Ready, 29x2.3"
Rear Tire
Butcher BLCK DMND, 27.5x2.3"
Butcher, GRID GRAVITY casing, GRIPTON® T9 compound, 2Bliss Ready, 27.5x2.3"
Geometry · choose a size for each bicycle
Geometry size
Reach
446 mm
446 mm
Stack
632 mm
632 mm
Head-tube angle
62.8°
62.8°
Seat-tube angle
76.8°
76.8°
Seat tube
420 mm
420 mm
Head tube
105 mm
105 mm
Chainstay / rear center
—
448 mm
Wheelbase
—
1259 mm
Bottom-bracket drop
25 mm
25 mm
Bottom-bracket height
350 mm
350 mm
Fork offset / rake
56 mm
56 mm
Front center
821 mm
821 mm
Trail
130 mm
130 mm
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.