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.
Save up to 47% with any one of our 11 Cycle to Work partners, and get the health benefits of a new bike in exchange for tax free salary sacrifice. To find out more about our various partners and how to apply click here.
Choose between Free Bike Delivery - to your home or place of work - or our new Premier Bike Delivery Service £99.99 and have your bike delivered "ready to ride" and set up to your measurements with seatpost and pedals adjusted on arrival by a qualified bike mechanic. Either way, our Customer Care team will be in touch to arrange a delivery date to suit you.
We've partnered with Laka to offer you 30 days free bike Insurance on your new bike purchase over £400. Click here for more info and find out how to claim.
Specialized Demo Race Mountain Bike 2021
A downhill bike that's all about speed, the Specialized Demo Race Mountain Bike offers a blend of traction and nimble manoeuvrability thanks to its mixed wheel size - with a 29" front wheel and 27.5" to the rear. Numerous World Cup successes attest to its capability, and an adjustable rear end means the back wheel can changed between 29" or 27.5" thanks to the smart pivot flip-chip, so wheel size can be altered to best suit riding style or terrain.
The revised axle path is more rearward, redirecting energy more efficiently to the suspension for minimised fatigue and lessened rear wheel hang-up - so nothing gets in the way of that all-important speed. 200mm of tasty travel is packed into the RockShox BoXXer Ultimate 29 fork, and the RockShox Super Deluxe Ultimate DH Coil delivers serious performance with rebound adjustment and external low speed compression. There's no stiction to overcome for this coil shock, meaning plush performance all ride long.
Sure stopping power is delivered by the 4-piston SRAM Code RSC hydraulic disc brakes regardless of terrain or conditions and the compact 7-speed SRAM DH-specific X01 components are super light, with larger gearing jumps between cogs eliminating the need to double-shift. X01 DH may not be a jack of all trades, but it's certainly a master of one - downhill. It's quiet, with trigger-like responsive shifting and a spot on gearing range fit for purpose, with a chunky ribbed chainstay protector eliminating chain slap and downtube protector preserving the frame.
Highlights
- Specialized M5 alloy frame, DH specific geometry
- Flip-chip for compatibility with 27.5" or 29" rear wheel
- RockShox BoXXer Ultimate 29, DH DebonAir spring fork with 200mm of travel
- RockShox Super Deluxe Ultimate DH Coil rear shock with external low speed compression and rebound adjustment
- Lightweight SRAM X01 DH-specific 7-speed components
- 4-piston SRAM Code RSC hydraulic disc brakes for rapid stopping power
Technical Specification
| 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 Ultimate 29, Charger 2.1 Damper, DH DebonAir spring, short crown, 20x110mm thru-axle, 56mm offset, 200mm of travel |
| Rear Shock | RockShox Super Deluxe Ultimate DH Coil, external low speed compression, external rebound adjust, Trunnion mount, 225x75 |
| Bottom Bracket | SRAM DUB, 83mm |
| Stem | Specialized Descendant 35mm Direct Mount Stem, 50mm length |
| Handlebar | Roval Traverse SL Carbon, riser bar, 6-degree upsweep, 8-degree backsweep, 30mm rise, 800mm, 35.0mm |
| Grips | Specialized Deity Knuckleduster, Black |
| Front Brake | SRAM Code RSC, 4-piston caliper, hydraulic disc, 220mm rotor |
| Rear Brake | SRAM Code RSC, 4-piston caliper, hydraulic disc, 200mm rotor |
| Brake Levers | SRAM Code RSC |
| Rear Derailleur | SRAM X01 DH, 7-speed, trigger |
| Shift Levers | SRAM X01 DH, trigger, 7-speed |
| Chain | SRAM PC1130 with Powerlink, 11-speed |
| Cassette | SRAM X01 DH, 7-speed, 10-24t |
| Crankset | SRAM X01 DH, DUB, carbon, Direct mount ring, 165mm |
| Front Wheel | Specialized alloy, sealed cartridge bearings, 20x110mm, 28h 6-bolt disc hub, Roval Alloy DH, 29", 28mm internal width, tubeless-ready rim, DT Swiss Competition, stainless steel, 14g spokes |
| Rear Wheel | DT Swiss 350, SRAM XD freehub, 6-bolt disc, high-low flange, sealed cartridge bearings, 12x148mm spacing, 28h hub, Roval Alloy DH, 27.5", 28mm internal width, tubeless-ready rim, DT Swiss Competition, stainless steel, 14g spokes |
| 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 titanium rails, 130mm |
| Seatpost | Thomson, alloy, straight, 12-degree clamp |
| 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 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.
Unable to display Reviews due to Privacy Settings.
Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".
Unable to display Q&A due to Privacy Settings.
Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".