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S-Works Tarmac SL8 Frameset


S-Works Tarmac SL8 Frameset

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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

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S-Works Tarmac SL8 FACT 12r Carbon, Rider First Engineered™, Win Tunnel Engineered, Clean Routing, Threaded BB, 12x142mm thru-axle, flat-mount disc. 685g frame.



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



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

Seat Binder

Tarmac integrated wedge



1.41 kg (3 lb, 1.7 oz)

Weight Size

56cm, as pictured

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


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Seatpost Length300mm300mm300mm380mm380mm380mm380mm
Stack to Stem509mm522mm535mm552mm573mm599mm620mm
Reach to Stem363mm372mm377mm381mm393mm400mm406mm
Frame Stack501mm514mm527mm544mm565mm591mm612mm
Frame Reach366mm375mm380mm384mm395mm402mm408mm
Head Tube Length99mm109mm120mm137mm157mm184mm204mm
Head Tube Angle70.5°71.75°72.5°73°73.5°73.5°74°
BB Height266mm266mm266mm268mm268mm268mm268mm
BB Drop74mm74mm74mm72mm72mm72mm72mm
Fork Length, Full370mm370mm370mm370mm370mm370mm370mm
Fork Rake/Offset47mm47mm47mm44mm44mm44mm44mm
Front Center572mm574mm577mm579mm592mm606mm613mm
Chainstay Length410mm410mm410mm410mm410mm410mm410mm
Top Tube Length, Horizontal496mm509mm531mm541mm563mm577mm595mm
Bike Standover Height723mm735mm746mm768mm786mm808mm834mm
Seat Tube Length433mm445mm456mm473mm494mm515mm545mm
Seat Tube Angle75.5°75.5°74°74°73.5°73.5°73°

Rider Reviews

  • 4
  • 5 Reviews

Overcooked the rear end compliance.

The rear end of this thing isn't far from a gravel bike in the amount of flex and rebound. It's pretty disconcerting. The concept is dumb in any instance, like if you've ever ridden a gravel bike the flex of the frame doesn't protect you from jarring surfaces, the flex and rebound just knocks you off your rhythm. I just built one of these with high expectations (coming from an SL-6) but have found a number of disappointments. They make their compatible and very cool (cable routing) "42" bars 41cm wide. Why? Now I have to go find actual 42 bars. The 3D Romin saddle is strangely wide in the middle and hits my inner thighs, otherwise a nice saddle. The frame is light and the bike is otherwise amazing to ride. My S-Works fandom has waned dramatically with the inexplicable choices in the newest version of the frame and accompanying components.




Like riding on a cloud in heaven, I am in love.

Verified Buyer


Todd C.


SL8 is off the hook!!

I recently purchased the Specialized SL8 and I'm beyond happy with my decision. I'm an avid cyclist, and have been looking for a bike that is lightweight, comfortable, and offers superior performance. The SL8 is all of those things and more. The lightweight frame along with Sram Force axis groupset make the bike so fast and responsive, and the geometry is comfortable for long rides. I couldn't be more pleased with my purchase. I would highly recommend this bike to anyone looking for a high-performance bike. The SL8 one of the best bike I've ever owned, and I'm sure it will serve me well for many years to come.



Worth the dollars.

I recently upgraded from an SL7 pro to the SL8 Sworks. A noticeable leap in performance for the price. Overall weight saving from complete bike sram force to sram red, CLX wheels to CLX II and Roval cockpit from SL7 two piece unit almost 3lbs. More responsive on climbs, easier to maintain and achieve higher average speeds. SWorks SL7 to SWorks SL8 difference might be minor, but SL7 Pro to SL8 SWorks makes you smile more even during New England rain storms. (Ride 54 frame, 5,11ft).