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S-Works Tarmac SL6 Disc - Dura Ace Di2


2020 S-Works Tarmac SL6 Disc - Dura Ace Di2

When we developed the Tarmac Disc, we didn't just want it to be fast. We wanted it to be fast everywhere. Long climbs, windy flats, Grand Tour stages, local fondos—we built a race bike to be the most complete out there. How'd we do it? We started with our 500-piece, Rider-First Engineered™ frame with a perfectly-tuned ride quality for every size, added in some serious aero tech that makes it 45 seconds faster than the Tarmac SL5, and then made it 20% lighter. Nothing is lighter, faster, and better handling.

This S-Works Tarmac comes ready to race with Shimano's new Dura-Ace 9170 Di2 groupset with disc brakes and the lightweight, yet impressively aerodynamic, Roval CLX 50 Disc wheels with 26mm Turbo Cotton tires.

Technical Specifications

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FACT 12r carbon fiber, Rider-First Engineered™, OSBB, clean routing, internally integrated seat clamp, 12x142mm thru-axle, flat-mount disc



Praxis, 46T, 110BCD


S-Works Power Cranks, dual-sided power measurement, +/- 1.5% accuracy


Shimano Dura-Ace, 11-speed

Rear Derailleur

Shimano Dura-Ace Di2 R9150, 11-speed

Shift Levers

Shimano Dura-Ace Di2 Disc R9170


Shimano Dura-Ace R9100, 11-speed, 11-30t

Bottom Bracket

OSBB, CeramicSpeed bearings

Front Derailleur

Shimano Dura-Ace Di2 R9150, braze-on



Body Geometry S-Works Power, carbon fiber rails, carbon fiber base, 143mm


Roubaix S-Wrap


S-Works Short & Shallow


S-Works FACT carbon Tarmac seatpost, 20mm offset


S-Works SL, alloy, titanium bolts, 6-degree rise

Seat Binder

Tarmac SL6 clamp assembly


Rear Hub

LuHai_RVT66L-K5-B25-AN2-N4-F0, Tubeless valve stem for CLX 50 Tubeless wheels.

Front Wheel

Roval CLX 50 Disc, carbon, tubeless-ready, Win Tunnel Engineered, 50mm depth, CeramicSpeed bearings, 21h

Rear Tire

Turbo Cotton, 320 TPI, 700x26mm

Inner Tubes

Turbo Ultralight, 60mm Presta valve

Rear Wheel

Roval CLX 50 Disc, carbon, tubeless-ready, Win Tunnel Engineered, 50mm depth, DT Swiss 240 internals, CeramicSpeed bearings, 24h

Front Tire

Turbo Cotton, 320 TPI, 700x26mm


Rear Brake

Shimano 105, Hydraulic disc

Front Brake

Shimano 105, Hydraulic disc



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

* 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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Crank Length165mm165mm170mm172.5mm172.5mm175mm175mm
Handlebar Width360mm380mm400mm420mm420mm440mm440mm
Stem Length70mm80mm90mm100mm100mm110mm110mm
Saddle Width155mm155mm155mm143mm143mm143mm143mm
Seatpost Length320mm320mm320mm380mm380mm380mm380mm
Head Tube Length105mm115mm126mm143mm163mm190mm210mm
Head Tube Angle70.5°71.75°72.5°73°73.5°73.5°74°
BB Height266mm266mm266mm268mm268mm268mm268mm
BB Drop74mm74mm74mm72mm72mm72mm72mm
Fork Length, Full363mm363mm363mm363mm363mm363mm363mm
Fork Rake/Offset47mm47mm47mm44mm44mm44mm44mm
Front Center571mm574mm577mm579mm591mm606mm613mm
Chainstay Length410mm410mm410mm410mm410mm410mm410mm
Top Tube Length, Horizontal490mm508mm531mm540mm562mm577mm595mm
Bike Standover Height730mm740mm755mm775mm795mm826mm850mm
Seat Tube Length400mm431mm462mm481mm501mm522mm553mm
Seat Tube Angle76°75.5°74°74°73.5°73.5°73°

Rider Reviews

  • 5
  • 4 Reviews

My favorite bike so far

I had an issue with the frame of my 2018 S-Works Tarmac Ultralight and unfortunately that bike was discontinued. I was initially reticent about the S-Works Tarmac Disc Di2 because of the disc brakes but now I am a fan. Besides the awesome disc brakes, which inspire much more confidence than rim brakes in any condition, the 2020 S-Works Tarmac Disc Di2's derailleur mounts flatter (does not stick out as much), the cranks have integrated power meters (dual), the S-Works Power saddle is great, and I really like the looks of the CLX 50 wheels vs. the CLX 32's on the Ultralight model. All in all, I miss my Ultralight but the new one is a worthy replacement.

Chris A.


Best bike I've ever owned

A true joy to ride. Every detail is exceptional. A responsive machine that just begs to go fast, great on climbs with the electronic shifting and minimal weight and really comfortable on the long rides.



Absolutely the best road bike I've owned

I've had many bikes, Cannondale was my latest favorite but I've changed. Specialized quality is noticeably better than Cannondale and other manufacturers. This bike is solid, a work of art. I'll by more Specialized products in the future.

Momento X.