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Nothing is faster than the Tarmac SL8 thanks to a combination of aerodynamics, lightweight, and ride quality previously thought impossible. It is the world’s fastest race bike.
Nothing is faster than the Tarmac SL8 thanks to a combination of aerodynamics, lightweight, and ride quality previously thought impossible. It is the world’s fastest race bike.
Specialized

Specialized Tarmac SL8 Pro Shimano Ultegra Di2 Road Bike in Gloss Dolomite Metallic

£7,249.00
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Pre-Launch

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Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined

Specialized Tarmac SL8 Pro Shimano Ultegra Di2 Road Bike in Gloss Dolomite Metallic

Season:2026

Brand:Specialized

Code:42215765460161

Nothing is faster than the Tarmac SL8 thanks to a combination of aerodynamics, lightweight, and ride quality previously thought impossible. It is the world's fastest race bike, made even faster with the aero paradigm-shifting performance of the all-new Roval Rapide CL III wheels.

Aerodynamics or lightweight alone do not win races; speed is what matters. Delivering that speed requires creating an uncompromising combination of aerodynamics, lightweight, stiffness, and compliance. Through race simulations using real-world data, the Ride Science team knows the Tarmac SL8 is the fastest race bike ever made on the routes that matter: 16.6 seconds faster over 40km, 128 seconds faster over Milan San Remo, and 20 seconds faster over the legendary Tourmalet climb.

The Tarmac SL8 Pro delivers exceptional performance with a full Shimano Ultegra 8100 series Di2 groupset with power meter, Roval Rapide CL III tubeless-ready wheelset, and a Roval Rapide cockpit. You are ready to race out of the box.

Features:

  • AERO IN EVERYTHING: Aerodynamics are placed where they matter—the leading edge—not just where they look good. In the process, this is the most aerodynamic road bike ever created, more aero than the Venge. 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 ever made, ensuring fast-moving, dirty air around the legs can flow back more cleanly.
  • MINIMUM WEIGHT, MAXIMUM AERO: Tarmac SL8 took learnings from Aethos to be easily built at the UCI minimum with a full aero setup. The team delivered a 685 gram frame, 15% lighter than the Tarmac SL7 and lighter than anything else on the World Tour. Lessons from Aethos were applied with the ability to make lightweight a top priority in the down tube, seat tube, and rear of the bike. The frame’s shape carries load so efficiently that extra carbon stiffness layers become redundant.
  • GOES LIKE HELL, RIDES LIKE HEAVEN: With massive gains in stiffness-to-weight—an improvement of 33% over the SL7—the Tarmac SL8 takes legendary handling, aggressive responsiveness, and World Championship proven geometry to the next level. The bike is stiffer at the pedals, more precise at the bars, and combines it with a compliant ride in the saddle that sets a new benchmark for race bike comfort. Thanks to Rider-First Engineering, every rider, regardless of size, gets the same unprecedented ride quality and handling. In the saddle, the Tarmac SL8 delivers 6% more compliance, floating over rough road with a supple feel unique in the high-strung world of race bikes. Tarmac’s proven geometry and 32mm tire clearance are identical to the SL7, ensuring easy adaptation and the versatility to run higher volume tires when needed.
  • BEYOND GENDER: There can be more difference between two male cyclists than between a male and female. Gender alone does not provide nearly enough data to specialize, and that means creating male or female bikes is arbitrary and outdated. Every rider can get the next level advantage of Tarmac SL8.
  • 'Apple Find My' technology is now integrated in all SW & Pro 4iiii power meters. Riders can now enjoy the peace of mind that comes with knowing the exact location of their bikes.
Technical Information
  • Frame
    Tarmac SL8 FACT 10r Carbon, Rider First Engineered™, Win Tunnel Engineered, Clean Routing, Threaded BB, 12x142mm thru-axle, flat-mount disc
  • Fork
    FACT 10r Carbon, 12x100mm thru-axle, flat-mount disc
  • Front brake
    Shimano Ultegra BR-R8170 hydraulic disc
  • Rear brake
    Shimano Ultegra BR-R8170 hydraulic disc
  • Shift levers
    Shimano Ultegra Di2 R8170, hydraulic disc
  • Front derailleur
    Shimano Ultegra Di2 R8150, braze-on
  • Rear derailleur
    Shimano Ultegra Di2 R8150, 12-speed
  • Cassette
    Shimano Ultegra, 12-speed, 11-30t
  • Chain
    Shimano XT M8100, 12-speed w/ quick link
  • Crankset
    Shimano Ultegra R81000 with 4iiii Precision 3+ Power Meter, 52/36t
  • Bottom bracket
    Shimano Threaded BSA BB
  • Front tire
    S-Works Turbo TLR Race Tire, 700x28c
  • Front wheel
    Roval Rapide CL III, Tubeless, 21mm internal width carbon rim, 51mm depth, Win Tunnel Engineered, DT350 hub, 18h, DT Swiss Competition Race Straight Pull Spokes
  • Rear tire
    S-Works Turbo TLR Race Tire, 700x28c
  • Rear wheel
    Roval Rapide CL III, Tubeless, 21mm internal width carbon rim, 48.5mm depth, Win Tunnel Engineered, DT350 hub, 24h, DT Swiss Competition Race Straight Pull Spokes
  • Inner tubes
    Standard 700 x 20-28 80mm PV
  • Handlebars
    Roval Rapide Cockpit, Integrated Bar/Stem
  • Tape
    Supacaz Super Sticky Kush
  • Saddle
    Power Pro Mirror, Hollow Ti rails
  • Seatpost
    S-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15mm offset
  • Seat binder
    Tarmac integrated wedge
  • Headset
    Stem headset spacers kit for SL7 stem & Roval Rapide cockpit use
  • Product id
    221576
  • Weight
    7.25 kg (15 lb, 15.7 oz)
  • Weight size
    56
Sizing Information
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