Viiiiva Heart Rate Monitor Monitor:Viiiiva HRM Engineered to be the best

Engineered to be the best affordable power meter on the market

With the Factory Install Dual Upgrade

automatic terrain selection

BONUS: FREE TRAINING WITH JOIN CYCLING Every 4iiii power meter purchase includes 8 weeks of free premium training on the JOIN Cycling App

Built to handle everything from rough terrain and gravel to high RPM sprints

Viiiiva Heart Rate Monitor Monitor:Viiiiva HRM Engineered to be the bestTAKE YOUR TRAINING TO HEART The 4iiii Viiiiva is a precision heart rate monitor designed to capture the most accurate picture of your internal physiological effort. Whether youre pushing through a high intensity workout, pacing a marathon, or climbing the virtual mountains of Zwift, the Viiiiva provides the real time data needed to optimize performance, track cardiovascular fitness, and manage recovery with professional grade accuracy. Built for