Left-Side PRECISION 3+  Powermeter - Factory Install

Lado Opuesto a la Transmisión Precision 3+ Medidore de potencia

Instalado en fábrica
Impuesto incluido.

Our most powerful unit to date, compressed into a smaller, lighter package and featuring support for Apple Find My, the PRECISION 3+ Powermeter is a proven choice of pros and weekend warriors alike. Whether you’re fighting for a Kona qualification spot, logging countless hours on virtual riding platforms or looking to better your time up the local KOM segment, you want accurate and reliable tools to unlock your potential. With up to 800 hours of battery life, an automatic terrain selector, +/-1% accuracy and backed by our industry-leading 3-year warranty, the PRECISION 3+ Powermeter will be your trusted tool for years to come.


How does it work?

The PRECISION 3+ Powermeter is so much more than a power meter. It’s your training partner that offers peace of mind. While you are riding, your PRECISION 3+ Powermeter will transmit Watts, cadence, and calories to your head unit of choice. While the power meter is not in use, Find My is enabled and allows you to see its location on a map. You can add your power meter to the Find My app and locate it on an iPhone, iPad, Mac or using the Find Items app on an Apple Watch.

Factory Install

The Factory Install PRECISION gives you the flexibility of having a 4iiii power meter installed onto a crank you supply. Through our custom install process, PRECISION 3 can be installed on a wide variety of crank arms. We’ll work with you to determine the best fit for your bike frame. Once you place your order, we get in touch with the shipping logistics. You’ll then send us your left crank arm, we install a PRECISION 3+ left-side power meter on it, and we ship it back to you. With up to 800 hours of battery life, +/-1% accuracy and backed by our legendary 3-year warranty, the PRECISION 3+ Powermeter will be your trusted training tool for years to come.

In The Box

After a factory installation, your crank will be returned to you with a PRECISION 3+ Powermeter pod attached and ready to ride. Reinstall the crank arm back onto your bike, connect a headunit or computer, and you can start riding with power!

Warranty & Durability

Ridden through rain storms at Strade Bianche, mud filled cross country mountain bike races, and even tested amidst the salt spray of the ocean on Oracle Team USA’s America’s Cup competitors, you can be assured that your 4iiii power meter will be as tough as you are and is backed with an industry leading 3-year warranty. All 4iiii power meters are IPX7-rated for water immersion up to one meter and backed with an industry-leading 3-year warranty.

  1. 4iiii Warranty Policy


  • Apple Find My

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

  • Battery Life

    With up to 800 hours of battery life, you won’t have to worry about changing your battery for years to come.

  • Accuracy in 3D

    Not everyone has the perfect pedal stroke. 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.

  • Ultra Low Profile

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

  • Light Weight

    At only 9 grams the Precision 3 Powermeter weighs about the same as a sip from your water bottle. Our goal is to help you get faster, not to slow you down.

  • 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.


Specification Value
Accuracy +/- 1%
Battery Type CR2032 Coin Cell
Battery Life Up to 800hrs
Waterproof Rating IPx7
Cadence Range 30 - 170RPM
Power Range 0 - 4,000W
Height 5.5mm
Weight 9g
Operating Temperature 0 - 50°C
Communication Protocols ANT+, Bluetooth


A 4iiii PRECISION 3+ power meter is available ready to ride on any of the crankset configurations listed below. If your desired crankset isn't listed, we may have other products that are compatible.

  • Cannondale Hollowgram
  • Cannondale Hollowgram SL
  • Cannondale Hollowgram Si
  • Cannondale Hollowgram SiSL
  • Cannondale Hollowgram SiSL2
  • FSA SLK Light (Carbon)
  • SRAM Force (Carbon)
  • SRAM Force AXS (Carbon)
  • SRAM RED 22 (Carbon)
  • SRAM RED 22 AXS (Carbon)
  • SRAM X01 (Carbon)
  • SRAM XX1 (Carbon)
  • Shimano 105 FC-R7000
  • Shimano 105 FC-R7100
  • Shimano Ultegra FC-R8000
  • Shimano Ultegra FC-R8100
  • Shimano Dura-Ace FC-R9100
  • Shimano Dura-Ace FC-R9200
  • Shimano GRX FC-RX810
  • Shimano XT FC-M8100
  • Shimano XTR FC-M9100
  • Shimano XTR FC-M9120


If the weather or climate make riding outdoors tough, your 4iiii power meter can be used with all popular indoor-training apps, such as Zwift, TrainerRoad, Wahoo SYSTM, Rouvy, and more. Simply use your favourite app’s connection procedure over ANT+ or Bluetooth Smart, put your bike on a trainer, and get riding!

  1. Indoor Training

Instalado en Fábrica

  • Clearance Check

    Comprobación De Autorización

    Antes de comprar, confirme que haya suficiente espacio libre entre el brazo de la biela y el cuadro de la bicicleta para que quepa la cápsula del medidor de potencia. Para garantizar el espacio libre y la compatibilidad, se le pedirá que nos envíe una foto de una verificación de espacio libre exitosa antes de enviarnos su biela o juego de bielas. Si no está seguro, póngase en contacto con nosotros para obtener ayuda.

    1. PRECISION 3+ Clearance
    2. Juego de PRECISION 3
    3. Juego de PRECISION
    4. Liquidación del Podiiiium
    5. Apoyo
  • Shipping


    Encuentre un paquete apropiado y envíenos su manivela. Recomendamos una pista y señal para el servicio.

  • Installation

    Fabricación e Instalación

    A su manivela se le conectará la vaina usando las herramientas, técnicas y personal exactos que usamos en todos nuestros productos, y debe pasar todos los mismos controles de alta calidad. La fabricación debe demorar entre 7 y 10 días hábiles, y se le proporcionará un enlace de seguimiento para que pueda seguir su manivela a través del proceso.

  • Reinstallation

    Envío De Devolución y Reinstalación

    Una vez que se complete la fabricación, enviaremos su biela o juego de bielas utilizando el método de envío que seleccionó al finalizar la compra. Tan pronto como lo reciba, puede volver a instalarlo en su bicicleta.

  • Go Ride!

    ¡Anda A Cabalgar!

    Una vez que haya reinstalado su manivela o juego de bielas en su bicicleta, ¡diviértase! Los medidores de potencia 4iiii tienen una garantía de 3 años, compensación de temperatura y son impermeables IPX7, por lo que puede estar seguro de que son tan duros como sus entrenamientos.

    1. Más Información Sobre Ant+ Y Bluetooth Smart
    2. Por Qué Entrenar Con Potencia


  1. User Manual
  2. Frame Clearance Guide
  3. iOS App
  4. Android App