The pursuit of AeroBalance defines Zipp's approach to wheel design. Combining low drag performance with stable handling is Zipp's mission, because speed without control, is useless. The NSW wheels feature an entirely redesigned rim shape that aerodynamically integrates wider tubeless tires into the design of the popular NSW wheels. They now have a 19mm internal rim width and corresponding outer rim shape for aerodynamic optimization with 25mm tires. Not only are the latest versions of these wheels aerodynamically faster and more stable over a wide range of wind yaw angles than ever before, they gain even more speed thanks to the lower rolling resistance, smoother ride, improved grip, and reduced risk of flats offered by wider tubeless tires. The tubeless rims also feature internal ridges to lock the tire’s bead in place for secure performance over rough roads. In addition, the rims feature ABLC Sawtooth Technology, a complex dimpling pattern that helps reduce high yaw drag and improve crosswind stability. The used ImPress graphics technology prints graphics directly on the wheel, allowing the dimples to do what they were designed to do – control vortex shedding, the rate at which air sheds off the wheel. When it comes time to slow down, Zipp's ShowStopper textured braking surface delivers unrivaled rim braking performance in all conditions. The 58mm deep, symmetrical rims are completely made of carbon for a high sprinting stiffness at an extra low weight. The wheels are equipped with Zipp Cognition. The front wheel comes with 20 radial laced Sapim CX-Ray spokes while the rear wheel is equipped with 24 double crossed Sapim CX-Ray spokes. Material: rims: carbon hubs: aluminum nipples: aluminum Weight: approx. 1620 gram (per set | manufacturer information) approx. 738 grams (front wheel | manufacturer information) approx. 882 grams (rear wheel | manufacturer information) Rim height: 58mm external/internal rim width: internal: 19mm E.T.R.T.O.: 19-622 Spokes: Sapim CX-Ray | straight pull Nipples: Sapim Secure-Loc Spokes number: FW: 20 | radial RW: 24 | double crossed Hub axle system: FW: 9x100mm QR RW: 10x130mm QR Fitting type of tire: clincher | tubeless ready Fitting tire dimension: 28 inch Maximum tire pressure: 8.6bar / 125psi hub: Zipp Cognition Fitting for shifting: Shimano/SRAM HG 10/11-speed Campagnolo ED 10/11-speed SRAM XDR 11-speed Max. permissible total weight (rider + bike): 113kg / 250lbs Included in delivery: wheelset incl. quick release and brake pads
