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Demo Alloy 27.5
2019 Demo Alloy 27.5
Your speed shouldn't be determined by the size of your checking account—this is the logic behind the Demo 8 27.5. It's a blue-collar, speed-and-steeze wagon equipped with a chassis that's proven itself the world over, and we've decked out with a cost-effective, thoroughly kick-ass component mix.
When sending it full-gas down the trail, you need confidence that your bike is going to perform like it should, and no material has earned its keep on the downhill circuit like our M5 aluminum. This grade of aluminum has a whole lot going for it. The stuff is stiff, lightweight, and strong as hell. Highlights on the Demo 8 also include a burly 1.5-inch forged head tube and, with its distinctive single-sided seat mast, it has plenty of access to the bike's custom-tuned FOX VAN RC shock.
As for the ride, the Demo 8 pairs our S3 Geometry with a roomy top tube for added control, ultra-short and nimble chainstays, a low bottom bracket that keeps you feeling planted, and a slack front-end that feels absolutely dialed at high speeds.
The Demo 8 features 200mm of front suspension via a RockShox BoXXer RC 27.5 and 200mm of rear travel, courtesy of the aforementioned, custom-tuned FOX VAN RC. Together, the suspension combo ensures that you'll be able to rocket over any terrain with confidence. And when you add in a build kit that includes SRAM's powerful Guide RS brakes, a durable one-by SRAM drivetrain, and our legendary Butcher and Slaughter DH tires, you get a bike that wants nothing more than to be pushed harder and faster—dollar signs be damned.
Technical Specifications
FRAMESET
FRAME
M5 alloy, S3 Geometry, carbon seatstay, BB30, full internal cable routing, 135mm dropouts, lipped and sealed cartridge bearing pivots, replaceable derailleur hanger, 200mm of travel
SUSPENSION
FORK
RockShox BoXXer RC 27.5, DebonAir spring, adjustable low-speed compression, adjustable rebound, short crown, 20x110mm thru-axle, 48mm offset, 200mm of travel
REAR SHOCK
Custom FOX Van RC, rebound & compression adjust, 9.5x3.0"
COCKPIT
HANDLEBARS
Specialized, 7050 alloy, 6-degree upsweep, 8-degree backsweep, 27mm rise, 800mm width
STEM
Specialized Direct Mount DH Stem, two-piece, forged alloy, 45mm
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
SEAT BINDER
Alloy, 34.9mm
BRAKES
FRONT BRAKE
SRAM Guide RE, 4-piston caliper, hydraulic disc, 200mm
REAR BRAKE
SRAM Guide RE, 4-piston caliper, hydraulic disc, 180mm
DRIVETRAIN
SHIFT LEVERS
SRAM GX, trigger, 10-speed
REAR DERAILLEUR
SRAM GX, Type 2.1, short cage
CASSETTE
SRAM PG-1030, 10 speed, 11-36t (*last three cogs removed)
CRANKSET
Custom SRAM Descendant, BB30, 7050 alloy arms, 165mm, MRP SXg CS ISCG-05 chainguide
CHAINRINGS
Steel, 36T
BOTTOM BRACKET
SRAM BB30, 83mm
CHAIN
SRAM PC-1031, 10-speed
WHEELS & TIRES
RIMS
Roval 27.5, alloy, 24mm internal width, tubeless ready
FRONT HUB
Specialized disc, alloy flange & disc mount, sealed cartridge bearings, 20x110mm thru-axle, 32h
REAR HUB
Specialized disc, sealed cartridge bearings, 12x135mm spacing, 32h
SPOKES
DT Swiss Industry
FRONT TIRE
Butcher, DH casing, 60 TPI, wire bead, 27.5 x 2.5"
REAR TIRE
Butcher, DH casing, 60 TPI, wire bead, 27.5 x 2.3"
INNER TUBES
Presta, 40mm valve
ACCESSORIES
PEDALS
Specialized Dirt
* Weights based on production painted frames as pictured. Actual weights will vary based on colorway, frame size, and component variation. Specifications are subject to change without notice.
Geometry
| SHORT | MEDIUM | LONG | EXTRA LONG | |
|---|---|---|---|---|
| Crank Length | 165mm | 165mm | 165mm | 165mm |
| Handlebar Width | 800mm | 800mm | 800mm | 800mm |
| Stem Length | 45mm | 45mm | 45mm | 45mm |
| Saddle Width | 143mm | 143mm | 143mm | 143mm |
| Seatpost Length | 300mm | 300mm | 300mm | 300mm |
| Seat-Tube Angle | 74° | 74° | 74° | 74° |
| Head-Tube Length | 105mm | 105mm | 105mm | 105mm |
| Head-Tube Angle | 63.5° | 63.5° | 63.5° | 63.5° |
| Chain-Stay Length | 430mm | 430mm | 430mm | 430mm |
| Front-Center | 754mm | 779mm | 799mm | 819mm |
| B-B Drop | 12mm | 12mm | 12mm | 12mm |
| B-B Height | 342mm | 342mm | 342mm | 342mm |
| Bike Stand-Over Height | 698mm | 698mm | 698mm | 698mm |
| Fork Length (full) | 590mm | 590mm | 590mm | 590mm |
| Top-Tube Length (horizontal) | 571mm | 596mm | 616mm | 636mm |
| Seat-Tube Length | 394mm | 394mm | 419mm | 419mm |
| Stack | 614mm | 614mm | 614mm | 614mm |
| Reach | 395mm | 420mm | 440mm | 460mm |
| Trail | 118mm | 118mm | 118mm | 118mm |
| Fork Rake/Offset | 52mm | 52mm | 52mm | 52mm |
| Wheelbase | 1183mm | 1208mm | 1228mm | 1248mm |
| Crank Length | 165mm | 165mm | 165mm | 165mm |
| Handlebar Width | 780mm | 780mm | 780mm | 780mm |
| Stem Length | 45mm | 45mm | 45mm | 45mm |
| Seatpost Length | 367mm | 367mm | 367mm | 367mm |
Manual Downloads
Rider Reviews
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