2018 S-Works Tarmac Ultralight Disc Frameset

2018 S-Works Tarmac Ultralight Disc Frameset
Regular price $5,800.00

The all-new Rider-First Engineered Tarmac.

When it was time to design a new Tarmac, we were daunted as to how we were going to improve on the previous model. Already offering exceptional low weight, supreme stiffness, and that good ol' race snappiness, what were we to do? Easy. Turn traditional design on its head and develop the new S-Works Tarmac Ultralight Disc. Without a doubt, it's the fastest race bike you've ever ridden—good thing it has disc brakes.

In our search to shave every last gram, this Ultralight version uses a newly developed paint finish and an improved preparation process to deliver performance at the lightest possible weight. As for the construction, we utilized advanced aerospace composite optimization software to revolutionize the construction and layup of our new FACT 12r carbon. It's the most advanced material and schedule we've ever made—the shape, schedule, and material optimization allowed us to shed nearly 200 grams. That's right, a 20% reduction in frame weight—the perfect recipe for your next hill climb PR.

We started by further improving our Rider-First Engineered™ technology to ensure that the new Tarmac is stiff and compliant in exactly the right places, all while shedding some serious weight. With this revamp, we also updated the geometry—basing it on countless Retül data points and professional rider input. This enabled us to develop a performance road geometry that perfects the combination of a responsive front end and short wheelbase, delivering instantaneous response and optimal power transfer.

And while stiffness aids in the aforementioned, compliance must also be utilized for an optimal ride quality. That's why we designed a seatpost that builds compliance into the upper 120mm where clamping doesn't happen, dropped the seatstays, and altered the seat tube shape. We also added tire clearance up to 30mm, which translates to a 28mm Turbo Cotton on a Roval CLX 32 wheel. This allows lower pressures for decreased rolling resistance, increased traction, and more comfort. Altogether, these additions have the Tarmac riding like a true race-machine, while taking a bit of the sting out of road imperfections. You'll thank us on your next long ride.

And while this is all great, we know that aerodynamics is the most important thing we can do to make you faster. Both our Bora-Hansgrohe and Team Quick-Step Floors Pro Tour riders, after all, are demanding aero improvements on every bike. With this, the aero goal was to discover where we could essentially ""add aero for free,"" by not taking anything away from the hallmarks of the Tarmac design. During the six-month iterative process, three areas were discovered where we could do this—a new fork shape, dropped seatstays with aero tubes, and a D-shaped seatpost and seat tube. The result? A bike that's approximately 45 seconds faster over 40km compared to other lightweight bikes in the same category. This is a speed savings that you'll feel when you're attacking off the front of the peloton.

And last, but certainly not least, you'll notice the elephant in the room—the all-new addition of disc brakes. This model is designed for use with flat-mount disc brakes and it has a 12x142mm rear end. And rounding out the package are an included S-Works FACT carbon seatpost and an OSBB bottom bracket with CeramicSpeed Bearings. 

  • Featuring our Rider-First Engineered™ design that ensures every frame size has the same legendary climbing responsiveness and descending prowess you'd expect from a Tarmac, the S-Works FACT 12r frameset is our highest quality carbon frame, offering the ideal blend of light overall weight and targeted stiffness. Combine that with our Ultralight paint and preparation and you're left with the lightest Tarmac Disc possible.
  • S-Works full FACT carbon fork with a tapered construction provides incredible front end stiffness and steering response for instantaneous accelerations and high-speed descents.
  • With its high-modulus construction, the S-Works FACT carbon Tarmac seatpost provides impeccable power transfer, while still allowing for ample compliance for long days in the saddle.

        The Win Tunnel: Rim vs. Disc Brakes


        • FRAME S-Works Tarmac SL6, FACT 12r carbon, Rider-First Engineered™, OSBB, clean routing, Di2 specific, internally integrated seat clamp, 12x142mm thru-axle, flat-mount disc
        • FORK S-Works FACT carbon, 12x100mm, thru-axle
        • BOTTOM BRACKET OSBB, CeramicSpeed bearings
        • SEATPOST S-Works FACT Carbon Tarmac seatpost, 20mm offset
        • SEAT BINDER Tarmac SL6 clamp assembly


        49 52 54 56 58 61
        BB Drop 74mm 74mm 72mm 72mm 72mm 72mm
        BB Height 266mm 266mm 268mm 268mm 268mm 268mm
        Bike Standover Height 740mm 755mm 775mm 795mm 826mm 850mm
        Chainstay Length 410mm 410mm 410mm 410mm 410mm 410mm
        Fork Length, Full 363mm 363mm 363mm 363mm 363mm 363mm
        Fork Rake/Offset 47mm 47mm 44mm 44mm 44mm 44mm
        Front Center 574mm 577mm 579mm 591mm 606mm 613mm
        Head Tube Angle 72° 73° 73° 74° 74° 74°
        Head Tube Length 115mm 126mm 143mm 163mm 190mm 210mm
        Reach 375mm 380mm 384mm 395mm 402mm 408mm
        Seat Tube Angle 76° 74° 74° 74° 74° 73°
        Seat Tube Length 431mm 462mm 481mm 501mm 522mm 553mm
        Stack 514mm 527mm 544mm 565mm 591mm 612mm
        Top Tube Length, Horizontal 508mm 531mm 540mm 562mm 577mm 595mm
        Trail 63mm 58mm 58mm 55mm 55mm 52mm
        Wheelbase 973mm 975mm 978mm 990mm 1005mm 1012mm

        Click here for a general sizing guide.

        We'll take care of you.

        Why buy a Specialized?

        The frame is the single most important factor in a bike's ride quality. While there are many other components involved, the frame is what ties it all together and ultimately determines how well a bike rides. Specialized makes the highest quality, most sorted frame on the market. The fit and finish is excellent and they ride amazing.

        Why buy from us?

        We're your local Christchurch bike shop. When you buy from us you get the best support, fast. You don't have to email customer service and hope for a response, just come in and see us. We keep a ton of parts in stock and have mechanics that are trained up on all the latest tech in a modern workshop.

        Free General Service

        Bikes need regular maintenance but we're here to help. To guarantee that your new bike stays running sweet, we offer a free General Service on all bikes that we sell. Worth $89, we'll do your first one for free at 6 months of ownership. Note that while the General Service labour is free, additional labour or parts cost extra. Bookings are required.

        See our service menu

        Best Warranty

        Specialized is confident with their quality and has one of the bike industry's best warranties out there. Frames and Roval wheels have a lifetime warranty and are transferrable to a subsequent owner, who then get 2 years from the original retail purchase date. We have very few come back with problems and the ones that do are sorted quickly.

        See the warranty details

        Let's stay in touch.