Clear Icon
Search Icon
Clear Icon
Search Icon
Pinch Zoom Icon
Pinch to Zoom
Pinch Zoom Icon
Pinch to Zoom
Rotate Phone Icon
Rotate screen for larger image

2019 Demo Expert 29

4.5

2 Reviews

If you don't know the Demo, it's time you get acquainted. Think of it as a two-wheeled,…

Product Details

Add Icon

If you don't know the Demo, it's time you get acquainted. Think of it as a two-wheeled, dirt-eating Mario Andretti—it just wants to go fast. And this year, the Demo Expert 29 adds a new limb to the Demo family tree with an entirely new design that makes railing corners and casting floatation spells over rock gardens easier than ever. It has a ground-up new frame, improved kinematics, better suspension under braking, bigger wheels, and all the newest fancy bits that make this the fastest Demo we've ever made. Yeah, we say that every time, but the race clock doesn't lie.

We've refined the Demo's kinematics and suspension design. We had one overriding goal—improve the bike's ability to carry momentum, no matter how technical the terrain. More momentum equals more speed, after all. We began by altering the Demo's axle path, making it more rearward in the initial stages of travel where sensitivity is most critical. The revised axle path reduces hang-up on square-edged bumps and that, in turn, transfers more energy to the suspension and less to you. Now, you finish a day of runs with less fatigue and more control.

Bigger wheels maintain momentum better than smaller ones—particularly over technical terrain. The Demo 29 weds 200 millimeters of suspension travel with bigger wheels in a package that's crazy fast, yet still bike-park playful. While we were at it, we also improved the Demo's suspension performance under braking and added a bit more anti-squat to improve its pedaling performance. Bottom line, the new Demo rolls faster through chunky terrain than its predecessor. Sweet.

The Demo 29's new shock linkage places weight low on the frame, giving the bike a lower center of gravity and an even more confident and planted feel at speed. The new linkage is connected to a Trunnion-mount shock, which provides the Demo with the same 200 millimeters of rear suspension in a smaller (225x75mm) shock package. That smaller shock package helped us build a stiffer front down tube. And what's more, the new Trunnion-mount shock features extra bushing overlap and adds ball bearings at the frame side of the shock, effectively boosting shock durability and making the suspension even smoother.

We've fine-tuned the Demo's geometry, as well. A relatively short (105mm) head tube keeps handlebar height in the right spot with the 29-inch wheels. We also compensated for the increased wheel size at the bottom bracket, keeping it at 350mm, in order to strike a balance between cornering stability and ground clearance. And lastly, the reach was increased by 20mm across the size range, starting at 425mm with the S2.

The devil is in the details, though, and the same rings true for the Demo 29, where we added a bunch of little details that make it easier to live with. A newly designed, ribbed chainstay protector makes chain slap a thing of the past and nearly silences the drivetrain. A molded down tube protector, meanwhile, protects the frame from rocks while a co-molded rear fender protects the shock from mud and debris. Clearance for up to 29x2.6"" tires allows for plenty of traction. And last, but not least, you're going to find 148mm rear-spaced hubs, a threaded 83mm GXP bottom bracket, 200mm available post insertion, and internal and external cable routing options for rear brakes. Add it up and the Demo is as easy to work on as it is to find replacement parts for.

For the spec, we've hit the perfect balance of durability, light weight, and reliability. You're going to find a SRAM GX drivetrain, powerful SRAM Code R 4-piston brakes, a RockShox Super Deluxe RC World Cup rear shock, a BoXXer RC 29 fork, and our Butcher tires with an all-new BLCK DMND casing that rolls fast and is ready for a ton of abuse.

  • M5 alloy construction works in harmony with our Style-Specific DH Geometry to create the ultimate race machine. The design is compact in order increase maneuverability and responsiveness, while the 200mm of travel at the rear makes the bike capable of taking big hits in stride. And to fill out all of the details that make the difference on race day, we’ve included an ISCG ‘05 mount for chain guides and all the bits to make it easy to work on.
  • The RockShox Super Deluxe RC World Cup rear shock features a low-speed compression adjustment, external rebound adjustment, and a Trunnion mount that makes for a smaller shock envelope and increased durability.
  • RockShox BoXXer RC 29 fork is nothing short of legendary. With 200mm of travel, a DebonAir spring for maximum efficiency, and adjustable low-speed compression, it's easy to see why it's such a fan favorite for gravity fiends.

Technical Specifications

Add Icon

FRAMESET

FRAME

M5 alloy, Style-Specific DH Geometry, 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

SUSPENSION

FORK

RockShox BoXXer RC 29, DebonAir spring, adjustable low-speed compression, adjustable rebound, short crown, 20x110mm thru-axle, 56mm offset, 200mm of travel

REAR SHOCK

RockShox Super Deluxe RC World Cup, low-speed compression adjust, external rebound adjust, Trunnion mount, 225x75

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, S2: regular thickness, S3/4: XL thickness

SADDLE

Body Geometry Henge DH, hollow cro-mo rails,130mm

SEATPOST

Specialized, 6061 alloy, 2-bolt clamp, 0mm setback, 30.9mm

SEAT BINDER

Alloy, 34.9mm

BRAKES

FRONT BRAKE

SRAM Code R, 4-piston caliper, hydraulic disc, 200mm

REAR BRAKE

SRAM Code R, 4-piston caliper, hydraulic disc, 200mm

DRIVETRAIN

SHIFT LEVERS

SRAM GX, trigger, 10-speed

REAR DERAILLEUR

SRAM, GX, Type 2.1, medium cage

CASSETTE

SRAM PG-1030, 10 speed, 11-36t (*last three cogs removed)

CRANKSET

SRAM Descendant, GXP, alloy, 94 BCD, 165mm crankarm, MRP SXg CS ISCG-05 chainguide

CHAINRINGS

34T

BOTTOM BRACKET

SRAM GXP, 83mm

CHAIN

SRAM PC-1031, 10-speed

WHEELS & TIRES

RIMS

Roval 29" Alloy DH, 28mm internal width, 28h, tubeless ready

FRONT HUB

Specialized disc, alloy flange & disc mount, sealed cartridge bearings, 20x110mm thru-axle, 28h

REAR HUB

Specialized, sealed cartridge bearings, 12x148mm thru-axle, 28h

SPOKES

DT Swiss Industry

FRONT TIRE

Butcher BLCK DMND, 2Bliss Ready, 29x2.6"

REAR TIRE

Butcher BLCK DMND, 2Bliss Ready, 29x2.3"

INNER TUBES

Standard, Presta valve

* 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

Add Icon
S2S3S4
Crank Length165mm165mm165mm
Handlebar Width800mm800mm800mm
Stem Length45mm45mm45mm
Saddle Width143mm143mm143mm
Seatpost Length300mm300mm300mm
Stack633mm633mm633mm
Reach425mm445mm465mm
Head Tube Length105mm105mm105mm
Head Tube Angle62.7°62.7°62.7°
BB Height350mm350mm350mm
BB Drop25mm25mm25mm
Trail131mm131mm131mm
Fork Length, Full607mm607mm607mm
Fork Rake/Offset56mm56mm56mm
Front Center802mm822mm842mm
Chainstay Length450mm450mm450mm
Wheelbase1251mm1271mm1291mm
Top Tube Length, Horizontal563mm600mm620mm
Bike Standover Height760mm760mm760mm
Seat Tube Length394mm420mm420mm
Seat Tube Angle77.7°76.3°76.3°
Geometry

Complete Your Ride

Rider Reviews

4.5

2 Reviews

 

Its a great bike

Great bike rides super well slightly over sprung for a lighter rider like myself but it is completely disassembled out of the box


Name:
Teddy

Helpful?

idk

it looks good


Name:
Miles S.

Helpful?