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Description
The Specialized Demo Expert 29"/27.5" Mountain Bike has been conceived to conquer downhill tracks of World Cup severity with maximum speed and control. The M5 alloy frame is light, laterally stiff and robust and integrates a RockShox Super Deluxe Select Coil shock with low-speed compression and rebound adjustment to guarantee traction and composure across the roughest terrain. This coil is included within a suspension design that features advanced kinematics and a more rearward axle path, ensuring that the heaviest impacts are soaked up with consummate ease. A RockShox BoXXer Select suspension fork partners the frame, utilising its 200mm of plush travel to increase line accuracy, comfort and confidence when the jumps and obstacles are at their most daunting.
The frame can accept 27.5" or 29" wheels, and the former size is specced within this build at the back to grant extra agility during technical runs. Within a mullet configuration, the 29" front wheel adds extra traction and momentum to the ride. Both wheels have bombproof, downhill-inspired constructuions and are propelled by a slick-shifting SRAM GX DH drivetrain. SRAM 4-piston hydraulic disc brakes finalise the build with precise stopping power in all conditions.
Frame | Specialized 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 |
Fork | 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 |
Bottom Bracket | SRAM DUB, 83mm, threaded |
Stem | Truvativ Descendant 35mm Direct Mount Stem, 50mm length |
Handlebar | Specialized Trail, 7050 alloy, 8-degree backsweep, 6-degree upsweep, 30mm rise, 800mm, 35mm clamp |
Grips | Specialized Trail Grips |
Front Brake | SRAM Code RS, 4-piston caliper, hydraulic disc, 200mm |
Rear Brake | SRAM Code RS, 4-piston caliper, hydraulic disc, 200mm |
Brake Levers | SRAM Code RS, hydraulic |
Rear Derailleur | SRAM GX DH, 7-speed, trigger |
Shift Levers | SRAM GX DH, trigger, 7-speed |
Chain | SRAM PC1110 with Powerlink™ |
Cassette | SRAM GX DH, 7-speed, 11-24t |
Crankset | DESCENDANT DH, DUB, alloy, Direct mount ring, 165mm, 34T |
Front Wheel | Rim - Roval 29" Alloy DH, 28mm internal width, 28h, tubeless-ready / Hub - Alloy, sealed cartridge bearings, 20x110mm, 28h / Spokes - DT Swiss Industry |
Rear Wheel | Rim - Roval 27.5" Alloy DH, 28mm internal width, 32h, tubeless-ready / Hub - Alloy, sealed cartridge bearings, 12x148mm thru-axle, 32h / Spokes - DT Swiss Industry |
Front Tyre | Specialized Butcher, GRID GRAVITY casing, GRIPTON® T9 compound, 2Bliss Ready, 29x2.3", tubeless-ready clincher |
Rear Tyre | Specialized Butcher, GRID GRAVITY casing, GRIPTON® T9 compound, 27.5x2.3", tubeless-ready clincher |
Saddle | Specialized Body Geometry Henge DH, hollow Cro-Mo rails |
Seatpost | Specialized, 6061 alloy, 2-bolt clamp, 0mm setback, 30.9mm |
Pedals | Available to be purchased separately |
All our bikes are fully built, checked, tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. All you have to do is add the pedals (if included), attach the handlebars to the stem and tighten them following the included detailed instructions or by watching our video and using the provided FREE tools. Visit our Bike Assembly page to see how you assemble your new bike once you receive it.
All bikes collected from our shop, are built, tested and ready to ride. For hassle-free home delivery and bike set-up from a qualified mechanic use our Premier Delivery Service.
Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. Bikes ordered for delivery will not arrive with the pedals installed, please refer to the owners manual and pedal installation guides provided for guidance. We do not install accessories to bikes, including mudguards. Bikes ordered for delivery that have tubeless compatible tyres and rims will arrive with inner tubes installed or with tubeless valves installed, this will be brand dependent. Sealant is available to be purchased separately.
If you require any assistance please contact our Customer Care team.
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Important Update for Our Canadian Customers
We regret to inform you that shopping on Sigma Sports is temporarily unavailable for customers based in Canada.
We understand how disappointing this may be and sincerely apologize for any inconvenience caused. Please rest assured that we are actively exploring solutions to resume service and find the best way to support our Canadian community.
We appreciate your patience and understanding during this time, and we look forward to welcoming you back as soon as possible.
If you require any further assistance, please reach out to the customer services team
— The Sigma Sports Team