Why buy your bike from Sigma Sports?
Don't hesitate to reach out to us. It's our goal to answer all of your questions and offer the best advice from our experts. We’ll be happy to answer any questions you may have. Contact us now or visit us in-store.
All our bikes are fully built by our Cytech qualified mechanics. To find out more, see the Built, Checked, Tuned and Tested section below to see how we'll deliver your bike.
We offer FREE DELIVERY of your bike to your home or place of work. Once you've placed your order, our Customer Care team will be in contact to offer a convenient delivery date of your choice.
We've partnered with PedalSure to offer you 30-DAYS FREE bike insurance on new bikes over £400. Visit our Cycle Insurance page to learn more and claim.
Specialized Demo Expert Mountain Bike 2021
The Specialized Demo Expert Mountain Bike screams speed - it's a downhill bike through and through, pairing a 29" wheel for grippy traction at the front with a nimble 27.5" wheel to the rear for rapid acceleration and superb manoeuvrability, resulting in an ultra-responsive ride. This mixed wheel size makes for capability on a range of tricky terrain, but should 29" better suit your kind of riding, the Demo features a convenient flip-chip that offers 29" rear wheel compatibility.
The RockShox BoXXer Select 29 and RockShox Super Deluxe Select Coil shock nail performance, boasting external low speed compression, heightened durability and 200mm of travel in the front and rear suspension.
Rapid braking is a certainty with SRAM Code RS 4-piston hydraulic disc brakes, and SRAM components handle shifting with consistency and a close-ratio 7-speed gear range. The geometry of this bike is low-slung, with a low bottom bracket positioned for gloriously good cornering and clearance.
- Specialized M5 alloy frame, DH specific geometry
- Flip-chip for compatibility with 27.5" or 29" rear wheel
- RockShox BoXXer Select 29, DH DebonAir spring fork with 200mm of travel
- RockShox Super Deluxe Select Coil rear shock with external low speed compression and rebound adjustment
- SRAM 7-speed components
- Lightweight DESCENDANT DH crankset
- SRAM 4-piston Code RS hydraulic disc brakes for near-immediate stopping power
|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|
|Stem||Specialized Direct Mount DH Stem, two-piece, forged alloy, 45mm|
|Handlebar||Specialized, 7050 alloy, 6-degree upsweep, 8-degree backsweep, 27mm rise, 800mm width|
|Grips||Specialized Trail Grips|
|Front Brake||SRAM Code RS, 4-piston caliper, hydraulic disc, 220mm rotor|
|Rear Brake||SRAM Code RS, 4-piston caliper, hydraulic disc, 200mm rotor|
|Brake Levers||SRAM Code RS|
|Rear Derailleur||SRAM GX DH, 7-speed|
|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|
|Front Wheel||Specialized alloy, sealed cartridge bearings, 20x110mm, 28h hub, Roval Alloy DH, 29", 28mm internal width, 28h, tubeless-ready rim|
|Rear Wheel||Specialized alloy, sealed cartridge bearings, 12x148mm thru-axle, 28h hub, Roval Alloy DH, 27.5", 28mm internal width, 28h, tubeless-ready rim|
|Front Tyre||Specialized Butcher BLCK DMND, 29x2.3" clincher|
|Rear Tyre||Specialized Butcher BLCK DMND, 27.5x2.3" clincher|
|Saddle||Specialized Body Geometry Henge DH, hollow Cro-Mo rails, 130mm|
|Seatpost||Specialized, 6061 alloy, 2-bolt clamp, 0mm setback, 30.9mm|
|Pedals||Available to be purchased separately|
Built, Checked, Tuned and Tested
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 specified), 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.
Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. We do not install accessories to bikes, including mudguards.
Specialized Demo Expert Mountain Bike 2021 Sizing
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