Push your limits further. The Specialized S-Works Demo 8 is a downhill mountain bike that has cut its teeth on the very toughest DH tracks in the world. The S-Works Demo 8 is a DH bike that is built for raw speed in a game where every second counts.
Relentless, fast, aggressive—no matter how you describe it, downhill racing is demanding. Starting with the bike, you're inserting control into a borderline uncontrollable situation wherever you can. But when it comes to harnessing gravity's pull, while also maintaining confident handling, it simply doesn't get any better than the S-Work Demo 8.
It's constructed from our finest carbon fibre, FACT 11m, for unparalleled stiffness and strength. At the front, you'll find 200mm of travel coming through a custom-tuned RockShox BoXXer Team 650b fork, and at the rear, you get 200mm of travel via our Öhlins TTX rear shock.
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 provides the utmost in responsive handling at speed.
The build is also dialled-in, sparing absolutely no expense in providing the utmost in lightweight, durable performance. This means that you get powerful SRAM Code RSC brakes and 200/180mm Centerline rotors, a precise one-by X01 DH seven-speed drivetrain, strong & stiff Roval 650b wheels, and our legendary Butcher & Slaughter DH tires for the ultimate in traction and control.
Add it all up, and you get everything you need to send-it down the mountain with more speed than you ever thought possible.
The frame features a full FACT 11m carbon fibre 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 manoeuvrability 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 Team 650b fork is nothing short of legendary. With 200mm of travel, a Charger Damper for maximum efficiency, and Power Buldge reinforced lower legs that allow oversized bushings for incredible stiffness, it's easy to see why it's such a fan favourite for gravity fiends.
A SRAM X01 DH 7-speed rear derailleur makes sure that your chain stays put on the cassette, and keeps all of your power taking you forward, no matter how gnarly the terrain.
All Tredz bikes are:
In the box with every Tredz bike is:
|Frame:||S-Works FACT 11m, S3 Geometry, carbon front triangle, full carbon rear end, new team alloy link, FACT IS construction, BB30, full internal cable routing, 135mm dropouts, lipped and sealed cartridge bearing pivots, replaceable derailleur hanger, 200mm of t|
|Fork:||RockShox BoXXer WC 27.5, Charger Damper, air spring, compression adjust, rebound adjust, alloy steerer, 48mm offset, Maxle Lite DH, 200mm of travel|
|Rear Shock:||Custom Öhlins TTX, Twin-Tube design, high- and low-speed compression adjust, rebound adjust, 9.5x3"|
|Stem:||Specialized Direct Mount DH Stem, two-piece, forged alloy, 45mm|
|Bars:||Specialized DH, FACT carbon, 6-degree upsweep, 8-degree backsweep, 27mm rise, 800mm, 31.8mm|
|Front Brake:||SRAM Code RSC, 4-piston caliper, hydraulic disc, metallic pads, 200mm rotor|
|Rear Brake:||SRAM Code RSC, 4-piston caliper, hydraulic disc, metallic pads, 180mm rotor|
|Rear Mech:||SRAM X01 DH, short cage, 7-speed|
|Shifters:||SRAM X0 DH, 7-speed, trigger|
|Rims:||Roval 27.5, alloy, 24mm internal width|
|Front Hub:||Specialized disc, alloy flange & disc mount, sealed cartridge bearings, 20mm thru-axle, 32h|
|Rear Hub:||Custom DT Swiss 350, 135mm spacing, SRAM XD driver, 54T ratchet, 12mm thru-axle, 32h|
|Spokes:||DT Swiss Competition, stainless, black,x2.0x1.8x2.0|
|Front Tyre:||Butcher, DH casing, 27.5 b x2.5", 60 TPI, wire bead|
|Rear Tyre:||Butcher, DH casing, 27.5 b x2.3", 60 TPI, wire bead|
|Seat Post:||Thomson, alloy, straight, 12-degree clamp|
|Chainset:||SRAM X0 DH, carbon, 104 BCD spider, 165mm crankarm w/ Gamut bashguard|
|Bottom Bracket:||SRAM BB30, 83mm|
|Chain:||SRAM PC1130 chain, 11-speed w/ PowerLink|
|Cassette:||SRAM X01 DH, 7-speed, 10-24t|
|Pedals:||Specialized Boomslang, 6061 alloy, sealed cartridge bearings|
Occasionally without notice, manufacturers sometimes change product specifications.
Spend £250 or more at Tredz and you can spread the cost. Pay monthly over 6-48 months, interest free (dependent on repayment terms and amount).
1Fill your basket with everything you want from Tredz and go to the checkout.
2During checkout, select the finance option you want as your method of payment.
3You will be sent to our finance provider's secure server to complete your application.
4Finance provider V12 will use the information provided to make a decision and complete checkout if you are approved.Read more about buying on finance
Buy now, pay 12 months later.
Interest free credit with no deposit. Pay nothing for 3 or 6 months on orders over £850, or 12 months on orders over £1,500
Choose your deposit.
Choose your term.
Lowest £0 deposit / 0% interest
for 48 months
Popular 0% finance
for 48 months
We are committed to offering fast and free delivery, whether you're ordering bikes, accessories or clothing. Our standard delivery service is FREE to mainland UK, regardless of the size and value.
Please note that bulky products and bikes shipped to outlying UK regions are excluded from free shipping.
Please note that Pre-Order dates can sometimes change due to updated stock information.
Click here for more UK and international delivery information.
It's easy to return a product with our 365 day, hassle free returns.
We will give you a full refund or exchange on any item that is returned to us unused/unfitted, in a resaleable condition and in its original packaging (where possible).
Please note: For hygiene reasons, we cannot accept returns of facemasks, undershorts or underwear if the item has been removed/unsealed from its original packaging.
If your item develops a fault or arrives damaged, please contact us first so we can resolve the issue for you as quickly as possible.
For more information please visit our Returns & Warranty page.
As cyclists ourselves, we know you will be keen to get out on your new bike as soon as possible. That's why we provide you with all the essential kit you need to get your shiny new bike rolling for the first time.
Most bikes don't come with pedals as standard so we include a set of basic pedals, free of charge with every bike we send out. We will also provide you with a pedal spanner to fit them and a 9-key trail tool, along with full instructions for setting your bike up out of the box. Each bike is sent out with a 16 point, quality control check sheet so you can be confident that your bike has been fully checked by our qualified mechanics.
All these items are provided at no extra charge and are packed into a Tredz drawstring bag that doubles up as a handy backpack for carrying your ride essentials.