184km total, including 63km on 11 sectors of gravel. The race featured punchy hills, especially on the gravel sections, and this year, strong winds.
353 NSW Tubeless
53.6 psi/3.7 bar
454 NSW Tubeless
55 psi/3.8 bar
Zipp Senior Design Engineer Ben Waite said: “It was an interesting and well thought out wheel choice going with the 353 on the front and the 454 on the rear, both with 28c Continental tires. The front with a little wider internal width at 25mm with that 28c tire is going to be grippy and good to turn. In the rear he went a little deep with the 454. On the rear, a little deeper rim almost helps stabilize the bike.”
Vila said the setup was the best technical option and the one Valverde felt more comfortable with the windy conditions on some of the gravel sectors. The 353 front/454 rear combo (you could unofficially call this the 354!) offered an outstanding balance of weight and aero for a race on mixed surfaces and terrain, Vila added.
Indeed, the 353 NSW is Zipp’s lightest tubeless offering with an ultra-stable 45mm undulating rim profile. The 454 NSW, with its 58mm undulating rim shape, is an all-around road race wheel. Both wheels feature Zipp’s Total System Efficiency design with a hookless rim-tire interface for vibration damping over rough roads and good traction, especially at the lower tire pressures used by Valverde. Vila said Valverde “was comfortable and grippy on the gravel and fast on the tarmac.”