4iiii PRECISION 3+ PRO Dual-Sided Powermeter - Factory Install PrecisionThe 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
This Ride Ready unit comes pre-installed on a brand-new Shimano crank arm
this dual-sided crank based power meter provides the comprehensive data you need to unlock your potential
JOIN provides flexible
or a cyclist simply looking to add the structure of data to your training
simply swap your left-side crank and start training
Replacement PRECISION Powermeter cap and O-ring
This combination provides a total understanding of training efficiency
the Viiiiva provides the real-time data needed to optimize performance
and then ship it back to you
The 4iiii Viiiiva is a precision heart rate monitor designed to capture the most accurate picture of your internal physiological effort
offering the ultimate combination of dual-sided accuracy
we install the dual-sided power meter
