POC Ventral SPIN Bike Helmet Zink Orange AVIP model-montpellier Specialized S-Works Stumpjumper Mountain Bike

Specialized S-Works Stumpjumper Mountain Bike - 2019

The stem is a color matched Zipp SL Sprint

Rudy Project Windmax Bike Helmet Small/Medium 54-58cm Hi-Vis Yellow - Excellent

Specialized Crux Elite X1 54cm Bike - 2017

then you might want to consider something in the 32 to 34 tooth range

POC Ventral SPIN Bike Helmet Zink Orange AVIP model-montpellier Specialized S-Works Stumpjumper Mountain BikeAerodynamic performance, safety and ventilation do not need to come at the expense of each other. POC has been able to deliver unparalleled levels of aerodynamic performance, safety and ventilation without compromise in the Ventral SPIN.