New 4iiii Ultegra R8100 Precision 3+ Dual Sided Power Chainset  - 170mm - 52/36. 

Apple Find My: Offering the reassurance of knowing the whereabouts of your power meter.

Battery Life: With up to 550 hours of battery life, you can be confident that you won’t need to change the battery for years to come.

Accuracy in 3D: Not everyone has the perfect pedal stroke. With an accuracy of +/- 1%, 4iiii is the only crank-based power meter to utilise 3 strain gauges to measure all forces in your pedal stroke.

Automatic Terrain Selector: Detects the terrain you’re riding on for more responsive cadence and power feedback/data. Ride confidently on less-travelled roads.

Cycling Metrics: Receive additional data such as pedal smoothness and torque effectiveness to analyse and optimise your pedal stroke.

Left Right Balance: A dual power meter measures the power from each individual leg to calculate your total power output.

Lightweight: 4iiii produces the lightest power meter on the market. We are dedicated to helping you get faster, one gram at a time.

Ultra Low Profile: With an ultra-low profile design, your 4iiii power meter is compatible with more bike frames than ever before.

Waterproof: Designed to withstand tough environments. With an IPX7 waterproof rating, you can be assured that your power meter can handle the most challenging conditions.