Zipps 30 clincher gets you where youre going faster zipps decades of aero excellence went into designing a distinctive aluminum rim that saves an estimated 42 seconds over 40km compared with a standard box section rim in common wind conditions see aero chart lower left thats aero efficiency you can take to the pain bank in races gran fondos gravel adventures and training rides but the 30 clincher is more than fast youll feel the 30s aero efficiency on the open road and also i