If you plan on racing a Grand Tour this summer, sure, go rock that S-Works. But if you're on the hunt for a glorious ride that can smash both a local crit and your friends on the weekends, you'll feel right at home on the Tarmac Disc Expert. In order cut some grams from the Tarmac, but to also ensure that it's stiff and compliant in exactly the right places, we took major steps to improving our Rider-First Engineeredâ¢ technology. From different layup schedules and materials, to visibly different forks, we scrutinized every single aspect of the Tarmac to ensure you're getting the perfect ride. With this revamp, we also updated the geometry, basing it on countless RetÃŒl 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, which delivers 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 C 38 Disc wheel. This allows lower pressures for decreased rolling resistance, increased traction, and more comfort. Altogether, these additions still have the Tarmac riding like a true race-machine, but it also takes a bit of the sting out of road imperfections. You'll thank us on your next long ride. But why disc brakes? The real question is "why not?" They offer superior braking power and modulation, work exceptionally well in wet weather, and offer a very, very minor weight addition. All this means that you have more control and can go faster with more confidence. We also know, however, that aerodynamic improvements are the most important thing we can do to make you faster. Our Bora-Hansgrohe and 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 thisâa 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. The build spec on this Tarmac Disc is value-packed, featuring Shimano Ultegra mechanical shifting, Shimano hydraulic disc brakes, a Roval C 38 Disc carbon fiber wheelset.
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