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screws and O-ring
track cardiovascular fitness
pedal smoothness
or climbing the virtual mountains of Zwift
Engineered to be the best affordable power meter on the market
4iiii PRECISION 3+ PRO Dual-Sided Powermeter - Factory Install - Dual Upgrade heart-rate-monitors screws and O-ringThe 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