Take your Ultegra chainset to the next level with 4iiii’s Precision 3+, the power meter built for serious cyclists. Trusted in the pro peloton, it delivers ±1% accuracy, auto terrain detection, and up to 800 hours of battery life. Whether you’re training for race day, sharpening your numbers on the turbo, or pushing limits on every climb, the Precision 3+ gives you the reliable data you need to perform. Backed by a 3-year warranty, it’s the ultimate upgrade for dedicated riders.

APPLE FIND MY

Offering complete peace of mind of always knowing where your power meter is at any given time.

AUTOMATIC TERRAIN SELECTOR

Detects the terrain you're riding on for more responsive cadence and power feedback/data. Ride the roads less travelled with confidence.

THREE-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 4iii power meters are backed by an industry-leading 3-year warranty.

BATTERY LIFE

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

LIGHT WEIGHT

At only 9 grams, the PRECISION 3+ Powermeter weighs about the same as a sip from your water bottle.

• Type: Non-drive-side
• Apple Find My: Yes
• Connectivity: ANT+ & Bluetooth Smart
• Accuracy (%): +/- 1
• Automatic Terrain Selector: Yes
• Cycling Metrics: Yes
• Battery: CR2032 coin cell
• Waterproof Rating: IPX7
• Cadence Range: 30-170 rpm
• Power Range (watts): 0-4000 
• Weight: 9 g
• Operating Temp. (°C): 0-50
• Storage Temp. (°C): -40-60 
• 3 Year Warranty