4iiii Precision 3+ Ultegra R8100 Left Arm Power Meter

From £344.29

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Sigma Sports
£344.29

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Price last checked: 25/04/2026

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4iiii Precision 3+ Ultegra R8100 Left Arm Power Meter

4iii PRECISION 3+ Ultegra R8100 Left Arm Power Meter The PRECISION 3+ Dura-Ace R9200 Left Arm Power Meter is compact and ultralight, weighing in at 9 grams, and 4iii's most powerful unit so far. It features support for Apple Find My, offers +/-1% accuracy, utilises an automated terrain detector, and will send accurate data to your choice of bike computer with up to 800 hours of battery life. The PRECISION 3+ Dura-Ace R9200 Left Arm Power Meter is a dependable tool for realising your potential, sending watts, cadence, and calories to your preferred head unit while you're riding. Use Apple Find My to check the power meter's location on a map when it's not in use: it can be added to the Find My app so that you can find it on an iPhone, iPad, Mac, or with the Apple Watch's Find Items app. This power meter is ride-ready and easily fitted usng the regular Shimano crank installation process. Simply connect to a head unit and begin riding with power.

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About: 4iiii

4iiii is a Canadian-based company that specializes in power meters and related technologies for cyclists. They are known for producing highly accurate and lightweight power meters that are compatible with a variety of cycling disciplines, including road, triathlon, and mountain biking. Their products use advanced strain gauge technology to measure power output, providing cyclists with valuable data to help them improve their training and performance. In addition to power meters, 4iiii also offers other cycling-related products, including heart rate monitors and cycling computers. The company has a strong commitment to research and development, constantly striving to innovate and improve their products.

About: Sigma Sports

Sigma Sports is a leading cycling and triathlon retailer based in the United Kingdom. Sigma Sports provides a comprehensive range of products catering to cyclists, triathletes, and outdoor enthusiasts. The store offers a diverse selection of bicycles, cycling accessories, apparel, and gear from well-known brands. Sigma Sports is known for its commitment to quality, customer service, and expertise in the cycling industry. The retailer has both a physical store and a robust online presence, making it convenient for customers to explore and purchase products. Sigma Sports is often associated with a wide range of cycling disciplines, including road cycling, mountain biking, and triathlon.