Unlock your full potential with the 4iiii Precision 3.0+ Power Meter, built onto a Shimano 105 R7000 left crank arm. Designed for road cyclists who demand reliability, accuracy, and cutting-edge features, this power meter delivers +/-1% precision, even under extreme conditions. Whether you’re training for your next gran fondo, climbing towards a new KOM, or riding indoors on Zwift, the Precision 3.0+ is your trusted companion for tracking real performance data.

Engineered for endurance, the Precision 3.0+ boasts an impressive 800-hour battery life from a single CR2032 coin cell and is built with automatic terrain detection, adjusting to your environment for consistent readings. It transmits watts, cadence, and calories in real-time to your compatible cycling computer or app via ANT+ and Bluetooth Smart, ensuring you stay connected no matter where or how you ride.

One of its standout features is Apple Find My integration, providing peace of mind by allowing you to track your power meter using any Apple device—even when not in use. At just 9g added weight and with a sleek, compact profile, the Precision 3.0+ maintains your bike's aesthetics while boosting its capability. Waterproof to IPX7, easy to install, and backed by a 3-year manufacturer’s warranty, it’s a premium upgrade with long-term value.

Key Features

• Compatible with: Shimano 105 R7000 series (left crank arm)
• Battery Life: Up to 800 hours (CR2032 coin cell)
• Accuracy: ±1% – trusted by professional athletes
• Metrics Tracked: Power (watts), cadence, and calorie output
• Terrain Optimisation: Automatic terrain selector for consistent data
• Apple Find My Enabled: Track the power meter on iPhone, iPad, Mac or Apple Watch
• Connectivity: Dual-band – ANT+ and Bluetooth Smart
• Water Resistance: IPX7 – performs in all weather conditions
• Lightweight: Adds only ~9g to the crank arm
• Warranty: 3-year manufacturer’s warranty for long-term confidence
• Firmware Updates: Wireless via the 4iiii mobile app

Welcome to North Sports! We are delighted to offer free UK delivery for orders over £50.

When a purchase is complete tracking information will be sent to you, if available, at the earliest.

Delivery Courier Services

Your delivery will usually be carried out through the distributor's own courier service. This is to help speed up deliveries for our customers.

Deliveries are Monday-Friday and the courier might be able to deliver on Saturday's for an additional cost.

Our ordering team will always request the courier contacts you on the day of delivery to advise they're on route but please note the driver contacting you is not guaranteed and we only request that this happens.

Pre-Assembled Ready To Ride Delivery

Throughout the website there are selected products with the product option to have pre-assembly for an additional cost.

Next Day Delivery

Next Day delivery is subject to availability. Please contact us prior via email for us to confirm if this option is available.

Returns

If you've changed your mind about keeping your purchase please email returns@northsports.co.uk, within 14 days from receipt of delivery ensuring you quote your order number. Want to know more? Please visit our full returns page here.