Zipp Super-9 Carbon Disc Wheel Black, Sram/Shimano, 12x142mm

What Our Gearhead(R) Experts Are Saying:"I raced a half Ironman on the Super-9 Carbon Disc Wheel and the lower tire pressure setup made a real difference on rougher pavement sections, nothing felt harsh or jarring. Having the TyreWiz monitor built in meant I never had to second guess my pressure before the start."Every triathlon comes down to managing effort, saving just enough in the legs for the run still to come, and the Super-9 Carbon Disc Wheel is built with exactly that math in mind. A wider rim shape and lower recommended tire pressure smooth out the road without giving up speed, so energy goes into forward motion instead of getting absorbed by every crack and seam in the pavement. An integrated TyreWiz 2. 0 monitor takes the guesswork out of tire pressure before the gun goes off, and a redesigned pump access port makes final adjustments simple. It's a wheel built for the discipline of racing long, where comfort and efficiency add up to real time saved.