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4iiii

Born in the Foothills of the Canadian Rockies we have deep roots in creating game-changing sports technology.

4iiii invented a little thing known as ANT+. Working with brands like Nike, Dynastream helped develop a speed and distance monitor along with the Nike foot pod.

ANT+ quickly became the standard communication protocol for wireless fitness devices and Dynastream was sold in 2006 to Garmin.

4iiii Viiiiva Heart Rate Monitor - North Sports Group
£54.00 - £54.00
£54.00
£54.00 - £54.00
£54.00

4iiii Viiiiva Heart Rate Monitor

In stock

The 4iiii Viiiiva Heart Rate Monitor is your ultimate training companion, whether you're a seasoned pro or a dedicated fitness enthusiast. Engineer...

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£499.00 - £499.00
£499.00
£499.00 - £499.00
£499.00

4iiii Dura-Ace 9200 Precision 3.0 Power Meter

In stock

Success isn’t just about the finish line—it’s about the dedication, the training, and the drive to improve. Whether you're chasing a Kona qualifica...

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£325.00 - £325.00
£325.00
£325.00 - £325.00
£325.00

4iiii 105 Precision 3.0 Power Meter

In stock

The 4iiii PRECISION 3+ Powermeter is the ultimate tool for cyclists who demand accuracy, reliability, and innovative features in a compact and ligh...

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£69.00 - £69.00
£69.00
£69.00 - £69.00
£69.00

Coros Heart Rate Monitor

In stock

Experience precision and comfort with the COROS Heart Rate Monitor, designed for athletes who demand accuracy without the inconvenience of a chest ...

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£479.00 - £479.00
£479.00
£479.00 - £479.00
£479.00

4iiii Fliiiight Smart Trainer

In stock

Take your indoor training to the next level with the 4iiii Fliiiight Smart Trainer, a revolutionary flywheel-free, zero-contact system that deliver...

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£659.00 - £659.00
£659.00
£659.00 - £659.00
£659.00

4iiii Factory Install Precision 3.0+ PRO Power Meter

In stock

Take your training to the next level with the 4iiii Factory Install Precision 3.0+ PRO Power Meter. This cutting-edge power meter delivers the high...

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£379.00 - £379.00
£379.00
£379.00 - £379.00
£379.00

4iiii GRX Precision 3.0 Power Meter

In stock

Take your gravel riding and training to the next level with the 4iiii GRX Precision 3.0 Power Meter. Whether you're chasing podiums, tackling tough...

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£479.00 - £479.00
£479.00
£479.00 - £479.00
£479.00

4iiii XTR Precision 3.0 Power Meter

In stock

Achieve your training goals with the 4iiii XTR Precision 3.0 Power Meter, a lightweight and highly accurate power meter designed to elevate your pe...

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£329.00 - £329.00
£329.00
£329.00 - £329.00
£329.00

4iiii XT Precision 3.0 Power Meter

In stock

Unlock your full potential with the 4iiii XT Precision 3.0 Power Meter, the ultimate tool for riders pushing their limits. Whether you're training ...

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£379.00 - £479.00
£379.00 - £479.00
£379.00 - £479.00
£379.00

4iiii XT/XTR/GRX Precision 3.0+ Power Meter

In stock

Unlock your full potential with the 4iiii XT/XTR/GRX Precision 3.0+ Power Meter is 4iiii's most advanced and compact unit yet. Designed for pros an...

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£479.00 - £479.00
£479.00
£479.00 - £479.00
£479.00

4iiii Dura-Ace 9100 Precision 3.0 Power Meter

In stock

Success is built on consistency, effort, and the right tools. Whether you're training for a Kona qualification, pushing your limits on the indoor t...

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£499.00 - £499.00
£499.00
£499.00 - £499.00
£499.00

4iiii Dura-Ace 9200 Precision 3.0+ Power Meter

In stock

Unlock your full cycling potential with the 4iiii Dura-Ace 9200 Precision 3.0+ Powermeter. Designed for both elite athletes and dedicated riders, t...

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£1,120.00 - £1,120.00
£1,120.00
£1,120.00 - £1,120.00
£1,120.00

4iiii Dura-Ace 9200 Precision 3.0+ PRO Power Meter

In stock

Unlock peak performance with the 4iiii Dura-Ace 9200 Precision 3.0+ PRO Power Meter—a cutting-edge training tool designed for cyclists who demand a...

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£875.00 - £875.00
£875.00
£875.00 - £875.00
£875.00

4iiii Ultegra FC8100 Precision 3.0+ Pro Power Meter

In stock

Take your cycling performance to the next level with the 4iiii Ultegra FC8100 Precision 3.0+ Pro Power Meter. Engineered for accuracy and reliabili...

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£425.00 - £425.00
£425.00
£425.00 - £425.00
£425.00

4iiii Ultegra R8100 Precision 3.0+ Power Meter

In stock

Take your training to the next level with the 4iiii Ultegra Precision 3.0+ Power Meter—the ultimate tool for data-driven performance. This advanced...

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Frequently Asked Questions

What is 4iiii known for in the sports technology industry?

4iiii is renowned for its innovative contributions to sports technology, with deep roots in the Canadian Rockies. The company is best known for inventing ANT+, a wireless communication protocol that revolutionised the way fitness devices communicate. ANT+ quickly became the standard for wireless fitness technology, enabling seamless connectivity across a range of sports devices. 4iiii also played a key role in the development of Nike's speed and distance monitor, alongside the Nike foot pod.

How did 4iiii become a leader in sports technology?

4iiii's journey to becoming a leader in sports technology began with its invention of ANT+, a game-changing protocol that allowed different fitness devices to communicate wirelessly. The company’s collaboration with major brands like Nike and Dynastream laid the foundation for wireless fitness solutions. In 2006, Dynastream was sold to Garmin, further solidifying 4iiii's impact on the sports tech industry and ensuring their technology would continue to drive innovation worldwide.

Does 4iiii offer products that work with other fitness devices?

Yes, 4iiii's products, including its powerful sensors and devices, are designed to work seamlessly with other fitness equipment. Thanks to the ANT+ protocol, 4iiii devices can connect to a wide range of third-party fitness devices, such as heart rate monitors, cycling computers, and smartwatches. This compatibility allows athletes to collect and analyse performance data across various platforms for enhanced training experiences.