Specialized’s latest iteration, the S-Works Tarmac SL9, continues the brand’s commitment to delivering a versatile, high-performance road bike. Building upon the foundation of its predecessor, the SL8, the SL9 introduces subtle yet impactful enhancements aimed at refining aerodynamics and overall ride quality.
Frame and Aerodynamics
The SL9’s frame showcases a meticulous design focused on aerodynamic efficiency. Specialized reports a 4-watt improvement over the SL8 at a speed of 45 km/h, achieved through several key modifications:
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Flow Fork: The fork has been reshaped to be wider and deeper, optimizing airflow around the front wheel.
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Dropped Down Tube: By lowering the down tube, Specialized has reduced the gap between it and the fork crown, creating a more unified and streamlined structure.
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Speed Sniffer: An updated design of the head tube area enhances airflow, contributing to the bike’s overall aerodynamic profile.
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Win Fin: Located on the seat tube, this feature improves aerodynamics when the bike is equipped with a single bottle on the downtube and an empty cage on the seat tube.
These refinements collectively contribute to the SL9’s enhanced aerodynamic performance without compromising its all-rounder nature. (cyclingnews.com)
Frame Weight and Construction
The SL9’s frame is constructed using Specialized’s FACT 12r carbon, resulting in a claimed weight of 687 grams. This lightweight frame is complemented by a complete bike weight of approximately 6.5 kg, positioning the SL9 as a competitive option in the lightweight road bike category. (road.cc)
Tire Clearance and Compatibility
Maintaining compatibility with a wide range of tires, the SL9 offers clearance for tires up to 32 mm in width. This allows riders to choose tires that balance comfort and performance, catering to various road conditions and personal preferences. (bicycling.com)
Drivetrain and Components
The SL9 is equipped with the SRAM RED AXS electronic groupset, featuring a 50/37 chainring combination and a 10-36 cassette. This setup provides a versatile gear range suitable for diverse terrains, from steep climbs to fast descents. Specialized’s in-house components, including the Roval Rapide CLX III wheels and the S-Works Power Mirror saddle, further enhance the bike’s performance and rider comfort. (bicycling.com)
Geometry and Handling
The SL9 retains the Tarmac’s renowned geometry, offering a balanced and responsive ride. With a stack-to-reach ratio of 1.43 in size 56, the bike provides an efficient riding position suitable for competitive racing and long-distance events. The 410 mm chainstays contribute to a stable rear end, while the 72 mm bottom bracket drop ensures a low center of gravity, enhancing handling and cornering stability. (bicycling.com)
Conclusion
The Specialized S-Works Tarmac SL9 exemplifies the brand’s dedication to refining its all-rounder road bike. Through thoughtful aerodynamic enhancements, a lightweight frame, and a versatile component selection, the SL9 offers a compelling package for riders seeking a high-performance bike capable of excelling across various cycling disciplines.
Highlights:
- Win Fin, Flow Fork, Speed Sniffer: Specialized launches ‘fastest road bike ever made’ in the S-Works Tarmac SL9 | Cyclingnews, Published on Monday, June 29
- Specialized unveils S-Works Tarmac SL9, claiming its fastest race bike yet – Canadian Cycling Magazine, Published on Monday, June 29
- New Specialized S-Works Tarmac SL9 launched | Cycling Weekly, Published on Monday, June 29