This is the Rolf Prima 2013 Vigor 700C Clincher Road Wheelset. The revolutionary Vigor model was the one to start it all. Increasing its aerodynamic advantages, the Vigor now features our new wide Delta rim profile; increasing the tire to rim transition thereby smoothing the air flow and decreasing drag. The 22mm rim width gives the Vigor not only increased aerodynamic benefits, but also increased overall stability and riding comfort. Brake sidewalls are CNC-machined. Designed and manufactured in the USA, the front hub has a unique 85mm wide flange placement which increases the lateral wheel stiffness by nearly 20%.
Paired spoking is when the spokes meet at the rim in pairs. In conventional wheels the spokes are evenly spaced. Tensioned spokes pull not only down toward the hub, but also outward toward the flanges. When spokes are paired at the rim, these left and right pulling forces are neutralized. Pairing the spokes allows Rolf to use fewer spokes on lighter rims than anyone. The Delta Rim Technology is a shaped profile that improves tire fit, creating a more aerodynamic interface with the tire as well as better tire support. Our wider tire bed fits tightly to the tire sidewalls smoothing airflow and better supporting the tire sidewalls. This improves turning precision, ride comfort and overall handling. Rolf Prima's Differential Flange Diameter technology transmits drive torque in the rear wheel across both flanges to increase the number of pulling spokes. This means even with Rolf Prima's low spoke counts, you still have the same number of pulling spokes as a traditional spoked wheel. Rolf Prima's Dish Reducing Design reduces the dish of the drive side spokes, increasing stiffness and making for a more stable and smoother ride. Dish Reducing Design technology is used on all Rolf Prima wheel models.