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Tarmac SL8 Pro - Ultegra Di2

Tarmac SL8 Pro - Ultegra Di2

We deliver! Just say when and how.

Nothing is faster than the Tarmac SL8 thanks to a combination of aerodynamics, lightweight, and ride quality previously thought impossible. After eight generations and over two decades of development, it’s more than the fastest Tarmac ever - it’s the world’s fastest race bike. Your legs up for it?

Aerodynamics or lightweight alone don’t 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 our 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, 20 seconds faster over the legendary Tourmalet climb.

Technical Specifications

Drivetrain

Chainrings

52/36T

Cassette

Shimano Ultegra, 12-speed, 11-30t

Rear Derailleur

Shimano Ultegra Di2 R8150, 12-speed

Bottom Bracket

Shimano Threaded BSA

Crankset

Shimano Ultegra R8100 with 4iiii power meter

Front Derailleur

Shimano Ultegra Di2 R8150, braze-on

Shift Levers

Shimano Ultegra Di2 R8170, hydraulic disc

Chain

Shimano Ultegra, 12-speed

Weight

Weight Size

56cm

Weight

7.16 kg (15 lb, 12.6 oz)

Cockpit

Saddle

Body Geometry Power Pro, hollow titanium rails

SeatPost

S-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15mm offset

Handlebars

Roval Rapide Handlebar, carbon

Tape

Supacaz Super Sticky Kush

Stem

Tarmac integrated stem, 6-degree

Seat Binder

Tarmac integrated wedge

Suspension

Fork

FACT 10r Carbon, 12x100mm thru-axle, flat-mount disc

Frameset

Frame

Tarmac SL8 FACT 10r Carbon, Rider First Engineered™, Win Tunnel Engineered, Clean Routing, Threaded BB, 12x142mm thru-axle, flat-mount disc

Wheels & Tires

Inner Tubes

Turbo Ultralight, 60mm Front, 80mm Rear, Presta valve

Front Tire

S-Works Turbo, 2BR, 700x26mm

Rear Tire

S-Works Turbo, 2BR, 700x26mm

Front Wheel

Roval 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 Wheel

Roval Rapide CL II, 21mm internal width carbon rim tubeless ready, Win Tunnel Engineered, DT for Roval 350 hub, DT Swiss Revolution spokes, 60mm depth

Brakes

Front Brake

Shimano Ultegra Di2 R8170, hydraulic disc

Rear Brake

Shimano Ultegra Di2 R8170, hydraulic disc

* Weights based on production painted frames as pictured. Actual weights will vary based on colourway, frame size, and component variation. Specifications are subject to change without notice.

Geometry

44495254565861
Crank Length165mm165mm170mm172.5mm172.5mm175mm175mm
Handlebar Width380mm380mm400mm420mm420mm440mm440mm
Stem Length70mm80mm90mm100mm100mm110mm110mm
Saddle Width155mm155mm155mm143mm143mm143mm143mm
Seatpost Length300mm300mm300mm380mm380mm380mm380mm
Frame Stack501mm514mm527mm544mm565mm591mm612mm
Frame Reach366mm375mm380mm384mm395mm402mm408mm
Stack to Stem509mm522mm535mm552mm573mm599mm620mm
Reach to Stem363mm372mm377mm381mm393mm400mm406mm
Head Tube Length99mm109mm120mm137mm157mm184mm204mm
Head Tube Angle70.5°71.75°72.5°73°73.5°73.5°74°
BB Height266mm266mm266mm268mm268mm268mm268mm
BB Drop74mm74mm74mm72mm72mm72mm72mm
Trail71mm63mm58mm58mm55mm55mm52mm
Fork Length, Full370mm370mm370mm370mm370mm370mm370mm
Fork Rake/Offset47mm47mm47mm44mm44mm44mm44mm
Front Centre572mm574mm577mm579mm592mm606mm613mm
Chainstay Length410mm410mm410mm410mm410mm410mm410mm
Wheelbase970mm973mm975mm978mm991mm1006mm1013mm
Top Tube Length, Horizontal496mm509mm531mm541mm563mm577mm595mm
Bike Standover Height723mm735mm746mm768mm786mm808mm834mm
Seat Tube Length433mm445mm456mm473mm494mm515mm545mm
Seat Tube Angle75.5°75.5°74°74°73.5°73.5°73°
Geometry
Voted Best Brand 5 Years in a Row

#1 Again: 2023 Gran Fondo Awards

The riders have spoken! For the fifth year in a row, Specialized has been crowned the #1 “Drop Bar Bike Brand” in the prestigious Gran Fondo Best Brand Awards for 2023. We innovate for riders, and year after year, our bikes are loved by the most discerning riders. Thank you!

Our Most Aero Race Bike Ever

Aero In Everything

After a decade of working in the Win Tunnel, our engineers put aero where it matters, not just where it looks good. The result? A new Nose Cone called the ‘Speed Sniffer’ helps the new Tarmac SL8 be 16.6 seconds faster over 40km than the Tarmac SL7. And yes, more aero than the Venge.

685 Gram Frameset

Minimum Weight, Maximum Aero

We saw how the lightest production road bike in the world - the Aethos - could marry blistering response in the mountains with a supple, all-day ride. The Tarmac SL8 took those learnings from Aethos to be easily built at the UCI minimum with a full aero set up.

Stiffer and Smoother

Goes Like Hell, Rides Like Heaven

The Tarmac SL8 delivers a massive 33% improvement in stiffness to weight vs the SL7, all while being 6% smoother in the saddle. With World Championship proven geometry and 32mm tire clearance, it adds up to an unprecedented ride quality.

Tarmac SL8 x Demi Vollering
Tarmac SL8 x Demi Vollering
The World’s Fastest Race Bike

The Tarmac SL 8 White Paper

Our Ride Science team tests our solutions versus the competition before a pedal is even turned. Through complex simulations of real world race routes with identical real world data, our Ride Science team knows the Tarmac SL8 is the fastest race bike ever made.

Front Loading Development

Aren’t You Glad Some Kids Stayed in Science Club?

Creating a bike more aerodynamic, 15% lighter, with a 33% improvement in stiffness-to-weight than the 4X World Championship winning Tarmac SL7 took more than an obsessive commitment to Innovate or Die. Our engineering team created an entirely new process.

Demi and Remco

Made in Racing

Since day one at Specialized, the rider has been the boss, so the best all arounders in the world - Remco Evenepoel, Demi Vollering - had a hand in developing and refining the Tarmac SL8. Ultimately, we co-created the fastest race bike in the world.

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