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The 4iiii Viiiiva is a precision heart rate monitor designed to capture the most accurate picture of your internal physiological effort
Whether you’re prepping for a local Gran Fondo or aiming for a new FTP personal best
This Ride Ready unit comes pre-installed on a brand-new Shimano crank arm
adaptive training plans that sync perfectly with your new PRECISION 3+ data
4iiii PRECISION 3+ PRO Dual-Sided Powermeter - Factory Install Select Your Crank Model:Shimano - Ultegra FC-08 The 4iiii Viiiiva is aThe 4iiii PRECISION 3+ PRO Powermeter is our most advanced power meter, offering the ultimate combination of dual sided accuracy, durability, and lightweight design. Whether you are a Tour de France pro, a Mountain Bike World Champion, Ironman triathlete, a Zwift racer, or a cyclist looking to analyze left right balance to optimize your pedal stroke, this dual sided crank based power meter provides the comprehensive data you need to unlock your
US$ 12.00
US$ 120.00
US$ 12.00