The S-Works Tarmac SL9 Frameset is the fastest road racing platform Specialized has ever built, sold as a blank canvas for riders who want to spec their perfect race machine from the ground up. At 687 grams, the FACT 12r carbon frame delivers 4 watts less drag than the SL8 while Flow State Design ensures that weight advantage never comes at the cost of stiffness or compliance. Every tube was reshaped in the Win Tunnel and validated across real World Tour race courses, so whatever drivetrain and wheels you choose, they're going on a frame that's already proven at the highest level of racing. The S-Works Aero Carbon Post is included, so the rear end is as fast the day the frame arrives as the day you finally finish the build.