353 NSW Tubeless Disc A1 saddles and a secure

and a secure

The Factor O2 delivers the perfect balance of lightweight efficiency

Perfect for riders who value speed

and standard tubes

353 NSW Tubeless Disc A1 saddles and a secureUndulating 45 mm deep rim shape provides speed on every terrain with best in class aerodynamic efficiency and crosswind stability Hookless rims for a seamless, aerodynamic transition between tire and rim Total System Efficiency, or TSE, approach to wheel design: overcoming specific barriers to speed: wind resistance, gravity, rolling resistance, and vibration losses 25mm internal width is ideal for running wider tubeless tires at reduced air pressure