4iiii Precision3+ Pro R8100 Shimano Ultegra Power meter (dual)

FEATURES

• APPLE FIND MY

  Offering the peace of mind in knowing where your power meter is.

• BATTERY LIFE

  With up to 550 hours of battery life, you won’t have to worry about changing your battery for years to come.

• ACCURACY IN 3D

  With +/- 1% accuracy, 4iiii is the only crank-based power meter to use 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 the roads less traveled with confidence.

• LEFT RIGHT BALANCE

  Dual power meters measure the power from each individual leg to calculate your total power output.

• CYCLING METRICS

  Get more data like pedal smoothness and torque effectiveness to analyze and optimize your pedal stroke.

• ULTRA LOW PROFILE

  With an ultra low profile design, the PRECISION 3+ PRO Powermeter is compatible with more bike frames than ever before.

• LIGHT WEIGHT

  At only 29 grams the PRECISION 3+ PRO Powermeter weighs about the same as a few sips from your water bottle.

• WATERPROOF

  Designed to work in our tough environment. With an IPX7 waterproof rating you can be assured that your power meter can handle the toughest conditions.

• 3 YEAR WARRANTY

  A lot can happen in 3 years. You probably won’t need to use it, but it’s reassuring to know that all 4iiii power meters are backed by an industry leading 3-year warranty.