2024 Specialized Tarmac SL8 Pro Ultegra Di2 Road Bike

£8,000.00

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The 2024 Specialized Tarmac SL8 Pro Ultegra Di2 Road Bike is the eighth generation of development to make the world’s fastest race bike thanks to a combination of aerodynamics, lightweight, and ride quality previously thought impossible.

Delivering speed requires creating an uncompromising combination of aerodynamics, lightweight, stiffness, and compliance. Through race simulations using real world data the Specialized Ride Science team knows the Tarmac SL8 is the fastest race bike ever made on the routes that matter. It's 16.6 seconds faster over 40km, 128 seconds faster over Milan San Remo, 20 seconds faster over the legendary Tourmalet climb.

Clean air is optimized for maximum advantage with the Tarmac’s new nose cone; the Speed Sniffer. By moving the steer tube back the leading edge of the head tube can be much sharper, delivering a much lower drag shape. Utilizing new UCI rules, the Tarmac SL8 has the narrowest, most aero seat post we’ve ever made ensuring fast moving, dirty air around the legs can flow back more cleanly. The new Tarmac SL8 is also 15% lighter than the Tarmac SL7.

The Tarmac SL8 Pro delivers exceptional performance with a full Shimano Ultegra 8100 series Di2 groupset with power meter, Roval Rapide CL II tubeless-ready wheelset, and a Roval Rapide Handlebar with an SL7 stem. You’re ready to race out of the box.


This bike is perfect for

Serious road riders and racers who want a bike that combined the best of aero performance and lightweight to create a do it all bike without compromise.


Key Features
  • Latest generation Tarmac frame that's lighter and more aero than ever
  • Shimano Ultegra Di2 gearing with power meter
  • Roval Rapide CL II tubeless-ready wheelset with carbon rims

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.

FrameTarmac SL8 FACT 10r Carbon, Rider First Engineeredâ„¢, Win Tunnel Engineered, Clean Routing, Threaded BB, 12x142mm thru-axle, flat-mount disc
ForkFACT 10r Carbon, 12x100mm thru-axle, flat-mount disc
HandlebarsRoval Rapide Handlebar, carbon
StemTarmac integrated stem, 6-degree
TapeSupacaz Super Sticky Kush
SaddleBody Geometry Power Pro, hollow titanium rails
SeatPostS-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15mm offset
Front BrakeShimano Ultegra Di2 R8170, hydraulic disc
Seat BinderTarmac integrated wedge
Rear BrakeShimano Ultegra Di2 R8170, hydraulic disc
Shift LeversShimano Ultegra Di2 R8170, hydraulic disc
Front DerailleurShimano Ultegra Di2 R8150, braze-on
Rear DerailleurShimano Ultegra Di2 R8150, 12-speed
CassetteShimano Ultegra, 12-speed, 11-30t
CranksetShimano Ultegra R8100 with 4iiii power meter
Chainrings52/36T
Bottom BracketShimano Threaded BSA
ChainShimano Ultegra, 12-speed
Front WheelRoval Rapide CL II, 21mm internal width carbon rim tubeless ready, Win Tunnel Engineered, DT for Roval 350 hub, DT Swiss Revolution spokes, 51mm depth
Rear WheelRoval Rapide CL II, 21mm internal width carbon rim tubeless ready, Win Tunnel Engineered, DT for Roval 350 hub, DT Swiss Revolution spokes, 60mm depth
Front TireS-Works Turbo, 2BR, 700x26mm
Rear TireS-Works Turbo, 2BR, 700x26mm
Inner TubesTurbo Ultralight, 60mm Front, 80mm Rear, Presta valve
Weight7.16 kg (15 lb, 12.6 oz)
Weight Size56cm
Colours GLOSS PINE GREEN METALLIC / WHITE, SATIN BLUE ONYX / BLACK
Sizes 44, 49, 52, 54, 56, 58, 61
Brand Specialized
Model Year 2024
Barcodes 888818888740, 888818888795, 888818889075, 888818889150, 888818889167, 888818889310, 888818889525, 888818889587, 888818889631, 888818889822, 888818889884, 888818890200, 888818890231
SKUs / Part Numbers 94924-1244, 94924-1249, 94924-1252, 94924-1254, 94924-1256, 94924-1258, 94924-1261, 94924-1344, 94924-1349, 94924-1352, 94924-1354, 94924-1356, 94924-1358, 94924-1361

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

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