Building on the legendary performance of the Tarmac SL4, the new Tarmac is the next revolution in bicycle design that starts and finishes with the rider. Featuring Rider-First Engineered™ technology, every size frame was developed independently based on the real-world stresses from rider input. The result is a complete performance advancement for every frame size. It’s the newest addition to the Tarmac family and along with the SL4, it’s sure to provide all the performance you’ll ever need.
WHAT Rider-First Engineered™ is a totally new way to approach bicycle development that grew out of our partnership with the leaders in Formula 1 development, McLaren. Rider-First Engineered™ begins and ends with the Rider; each of the seven frame sizes was developed independently, based exclusively on the real-world stresses introduced by the corresponding rider.
WHY For the first time in any bicycle, now the riding experience and performance of each size rider will be the same. When compared to the Tarmac SL4, all seven sizes of the new Tarmac see improvements in handling, pedaling response (BB stiffness), ride compliance and aerodynamics. On top of that, smaller riders (49, 52, and 54) get a lighter and more balanced bike with improved in-corner handling. Large riders (61 and 64) see marked improvements in steering response.
HOW Learning from McLaren’s advanced testing approach, Specialized developed industry-first simulation models and dynamic testing protocols that gave engineers an unprecedented ability to understand exactly how various sized bicycles respond to stresses. This data allowed Specialized to engineer frames that take into account the most important element on a bike — the rider.
As a result of this new understanding, Specialized Engineers were able to identify specific performance targets for each of the seven frame sizes and then engineer each independently to achieve the discrete performance targets.
FACT 11R CARBON FRAME (S-WORKS)
WHAT High modulus carbon frame made from our most advanced carbon construction method.
WHY Gives the new Tarmac the incredible stiffness to weight ratio that has defined the model. Unique carbon layups help achieve the best performing bike at every size.
HOW Thanks to a new understanding of real-world stress inputs, Specialized engineers have been able to achieve new levels of stiffness and ride quality thanks in large part to key carbon layup schedules in strategic locations. Stiffness where it's needed and compliance where it matters most. It's the next evolution in Tarmac performance.
TAPERED, SHAPED HEAD TUBE
WHAT Strategically designed head tube on SL4 frames tapers from 1-1/8” at the top to 1-3/8” at the crown and facilitates massive top and down tube junctions.
WHY Increases strength and stiffness for greater steering precision and responsiveness during out-of-the-saddle efforts.
HOW The wider base creates a stiffer, stronger junction, and the gradual transition of carbon fiber from top to bottom eliminates the potential for weak spots due to sharp angles—carbon is at its best when it keeps a smooth line. Uber-oversized top and down tubes “wrap” around the front of the head tube, creating the ultra-stiff “bulges” at the junctions. The design requires a smaller lower bearing (compared to last year’s 1-1/2”) which saves weight.
WHAT FACT construction with bottom bracket and chainstays constructed as one piece on most frame levels.
WHY Optimizes weight and stiffness in one of the most critical and highest-stress areas of the frame for superior acceleration, efficiency, and handling.
HOW The BB and chainstays are molded together creating a single unit, rather than bonded together after molding, along with the carbon BB shell. This results in a super strong and stiff unit: seamless from the BB to the dropouts, eliminating potentially weak junctions. This design resists deflection under extreme pedal loads for improved power transfer.