Sorry! Specialized Roubaix SL8 Comp is no longer available.

Roubaix SL8 Comp

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We created the endurance road category two decades ago proving that high ergonomics means high performance. Today, the new Roubaix SL8 with Future Shock 3.0 is lighter, faster, and smoother than any road bike ever made, unleashing unmatched confidence. The road may be hell below, but on Roubaix, it's always heaven above.

Guide To Road Bike Gears

If you are buying a road bike one of the big differences between models will be which gears they use. Most manufacturers will make the same bike, using the same frame but putting different gears and wheels on it. So for instance you can buy a Trek Domane AL 2 Disc with Shimano Claris gearing for £975 or get the Trek Domane AL 4 Disc with Tiagra gearing for £1625. They are fundamentally the same bike. One comes with the Shimano Tiagra gears and the other comes with Shimano Claris gears.

In most cases, the bottom of the range gears and top of the range gears will basically work in the same way. The big differences are in the quality of material used and the weight. Top of the range gears will be lighter and smoother to use.

One thing to watch out for when comparing bikes is whether the full groupset is being used. If you are buying a bike that has Shimano 105 gears on it. Shimano makes 105 brakes, gear levers, front and rear derailleurs, cranks, chainrings and bottom brackets. So basically all of the running gear on the bike. Some bike manufacturers will fit the full groupset, others will fit Shimano 105 front and rear derailleurs but use their own brakes and cranks to save a few pounds. So if you are comparing bikes be sure to check how much of the groupset the bike actually uses.


Read our Guide to Road Bike Gears

Road Bike Buying Guide

Nothing beats the feeling of effortless speed you get on a road bike. There are lots of reasons to ride a road bike, from the simple joy of it, to racing, long distance challenges, or café rides with friends. Whatever you want to do there will be road bike out there for you.

Men’s and Women’s road bikes

Nearly all manufacturers have stopped making dedicated men’s and women’s bikes. They are now all unisex. What you will see is that on smaller bikes, brands will often fit a wider saddle (generally more female friendly). On larger bikes they will often fit a narrower one (generally more male friendly).

Disc or rim brakes

It is getting increasingly hard to buy new bikes with rim brakes as the industry has almost exclusively switched to discs. The reasons for this are pretty simple. Disc brakes are much, much, more powerful than old rim brake systems so you can stop a lot more easily and safely. Disc brakes also allow much bigger tyres to be fitted which is more comfortable. Older disc brake systems did often suffer from rubbing and squeaking. While this hasn’t been completely fixed yet it is much less common on modern bikes with hydraulic brakes. Mechanical disc brakes can still take a bit of fettling to get them right so go for hydraulic if you can.

Read our full road bike buying guide


Who are Specialized?

Specialized is one of the best-known quality bike brands in the world. Started by a group of riders in 1974. A fact which has guided their decision making ever since.

" Made for riders, by riders."

They strove to make the best quality tires when quality tyres weren't around. When people wanted to ride cruisers in the dirt, they made the first production mountain bike. When roadies wanted to go faster, Specialized doubled down on carbon and built their own wind tunnel.

Bikes like the Allez, Rockhopper and Stumpjumper have developed followings and reputations of their own. Specialized has a reputation for making high-end, high-quality bikes. Specialized bikes always look great with high-quality paint and sensible sizing hel0s you get the right bike each time. If you buy a Specialized bike you can be guaranteed it will do what it is supposed to and will last.


Find our more about Specialized bikes

Price Match at Cycles uk

We understand that price is important, so we regularly price-check our competitors to make sure we have the best offers available. We recognise that we will not always be the cheapest, so if you see the same product cheaper from any of our competitors then please get in touch via the form below and we will do our best to match any reasonable advertised price.

FrameFACT 10R, Rider First Engineeredâ„¢ (RFE), FreeFoil Shape Library tubes, threaded BB, 12x142mm thru-axle, flat-mount disc
ForkFuture Shock 3.2 w/ Smooth Boot, FACT Carbon 12x100mm, thru-axle, flat-mount disc
HandlebarsSpecialized Hover Comp, Alloy, 125mm Drop, 75mm Reach w/Di2 Hole
StemFuture Stem Comp
TapeSupacaz Super Sticky Kush
SaddleBody Geometry Power Sport, steel rails
Front BrakeShimano 105, Hydraulic disc
SeatPostS-Works Pave
Rear BrakeShimano 105, Hydraulic disc
Seat BinderHidden drop clamp
Shift LeversShimano 105 R7170, hydraulic disc
Front DerailleurShimano 105 R7170, braze-on
Rear DerailleurShimano 105 R7150, 12-speed
ChainShimano 105, 12-Speed
CassetteShimano 105, 12-Speed, 11-36t
CranksetShimano 105, 12-speed
Chainrings50/34T
Bottom BracketShimano Threaded BSA BB
Front WheelDT Swiss G540 rim, 24mm internal width, tubeless ready, 24h, Specialized full sealed bearing thru axle hub, centerlock disc, DT Swiss Champion 14G stainless steel spokes, DT Swiss brass nipples
Rear WheelDT Swiss G540 rim, 24mm internal width, tubeless ready, 24h, Specialized full sealed bearing thru axle hub, centerlock disc, DT Swiss Champion 14G stainless steel spokes, DT Swiss brass nipples
Front TireS-Works Mondo 2BR, 700x32c
Rear TireS-Works Mondo 2BR, 700x32c
Inner Tubes700x28/38mm, 48mm Presta valve
Weight8.97kg (19 lb, 12.4 oz)
Weight Size56
Brand Specialized
Model Year 2024
SKUs / Part Numbers 94423-5149, 94423-5264

Please note: Manufacturers can sometimes change the specification of the products from time to time.

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