Zipp 30 Course, Rim Brake, 700C Clincher Wheelset Zipp’s new 30 Course Clincher rim-brake wheelset puts you tête de la Course… the head of the race, or the gran fondo, or your own riding adventure. This new wheelset rewrites Zipp’s own stringent rules for performance, durability & versatility in an aluminum wheelset. The 30 Course’s wide rim profile & new hubset are engineered to deliver speed, stability & comfort over any surface road bikes are tackling these days… smooth (and rough) pavement, gravel, dirt… whatever. This is Zipp’s first rim-brake tubeless-ready wheelset, providing the ability to run lower tire pressures without the risk of pinch flats. With external 25mm & internal 21mm rim widths, the 30 Course’s rim shape incorporates design innovations from the Zipp 202 Firecrest® Carbon Clincher profile, resulting in low aerodynamic drag as well as greater stability & predictability in crosswinds. The wider rim platform allows for increased air volume, which spreads the tire casing. This helps increase the contact patch with the ground. The result is enhanced cornering grip & increased comfort. The 30 Course also features the new 77/177 hubset, the same now being used in Zipp’s pro-proven 202 Tubular & Firecrest rim-brake wheelsets.