Specialized Demo 8 I Carbon 27.5" 2017 Downhill Mountain Bike

What are the delivery costs?

We offer Free UK Mainland Delivery on all orders over £20. Products shipped to outlying UK regions are excluded from free shipping.

Standard delivery is normally 2 - 5 working days.

Please view our delivery page for full information on UK and international delivery costs.

When it comes to the stiffness, lightweight, and strength required for downhill, you just can't beat a carbon fibre frame construction. 


That's while you'll find our top-tier carbon, FACT 10m, was used to create the acclaimed Demo 8 I Carbon. It's also been built off of our S3 650b geometry, ensuring a roomy top tube for added control, ultra-short, nimble chainstays, a low bottom bracket that keeps you feeling planted, and a slack front end that gives the utmost in responsive handling at speed. For suspension, this Demo features 200mm up front via a RockShox BoXXer RC 650b and 200mm of travel at the rear controlled by our revolutionary Öhlins rear shock. Together, the combo ensures that you'll be able to rocket over any terrain with confidence. And when you add in a build kit consisting of SRAM's powerful Guide R brakes, a durable one-by SRAM drivetrain, and our legendary Butcher & Slaughter DH tyres, you start get the picture of why our Demo 8s have won so many races.



  • The frame features a full FACT 10m carbon fiber construction for low weight and heightened levels of strength and stiffness, which is amplified by its asymmetrical frame design that still leaves plenty of access. This has also been paired with our proven S3 Geometry that increases maneuverability and responsiveness, while the 200mm of travel at the rear makes the bike capable of taking on the biggest of hits in stride.
  • RockShox BoXXer RC 650b fork is purposefully designed for the most demanding terrain on earth. With 200mm of travel, Motion Control IS damping for maximum efficiency, and Power Buldge reinforced lower legs that allow oversized bushings for incredible stiffness, it'll leave you with nothing but confidence.
  • SRAM Guide RS brakes give powerful, precise, and highly adjustable braking. Their based on a four-piston caliper design that puts out smooth, dependable stopping power, while the Reach Adjust feature allows you to customize the position for easy, one-finger lever pulls. And with SRAM's SwingLink technology, the cam system minimizes deadband without sacrificing modulation.


Frame FACT 10m carbon, S3 Geometry, carbon front triangle, carbon link and seatstay, FACT IS construction, BB30, full internal cable routing, 135mm dropouts, lipped and sealed cartridge bearing pivots, replaceable derailleur hanger, 200mm of travel
Forks RockShox BoXXer RC 650b, S: Extra soft spring, M: Soft spring, L: Medium spring, XL: Firm spring, 200mm of travel, compression adjust, rebound adjust, alloy steerer, 48mm offset, Maxle Lite DH
Rear_Shock Custom Öhlins TTX, Twin-Tube desgin, high and low-speed compression adjust, rebound adjust, 9.5x3"
Handlebars Specialized DH, 7050 alloy, 8-degree backsweep, 6-degree upsweep, 25mm rise, 800mm, 31.8mm
Stem Specialized P.Series MTB, forged alloy, 4-bolt, 45mm
Shifters 7 Speed SRAM GX, 7-speed, trigger
Rear_Mech SRAM GX DH, medium cage, 7-speed
Chainset SRAM Descendant, BB30, 7050 alloy arms, 165mm,SRAM 36T
Bottom_Bracket SRAM BB30, 83mm
Chain SRAM PC-1110, 11-speed w/PowerLink
Cassette SRAM PG-720 DH, 11-25t
Front_Brake SRAM Guide R, hydraulic disc, metallic pads, 200mm Centerline Rotor
Rear_Brake SRAM Guide R, hydraulic disc, metallic pads, 180mm rotor
Rims Roval 650b, alloy, 24mm inner width, 32h
Front_Hub Specialized disc, alloy flange & disc mount, sealed cartridge bearings, 20mm thru-axle, 32h
Rear_Hub Specialized disc, 12x135mm spacing, sealed cartridge bearings, 32h
Spokes DT Swiss Industry, stainless, 3x, 2.0"
Tyres Butcher, DH casing, 650bx2.5", 60TPI, wire bead Front
Slaughter, DH casing, 650bx2.3", 60TPI, wire bead Rear
Seatpost Specialized, 6061 alloy, 2-bolt clamp, 0mm setback, 30.9mm
Pedals Specialized Bennies, 6061 alloy body, sealed cartridge bearings, 4.5mm removable pins

Occasionally, without notice, manufacturers change product design and/or specifications.