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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.

A black 4iiii Precision 3.0 power meter for bicycles, with a badge indicating compatibility with Apple Find My.
£325.00
£325.00 - £325.00
£325.00
£289.00
£289.00 - £289.00
£289.00

4iiii 105 R7000 Precision 3.0+ Power Meter

4iiii

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...

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£325.00
£325.00 - £325.00
£325.00
£289.00
£289.00 - £289.00
£289.00
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

4iiii

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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£54.00 - £54.00
£54.00
£54.00 - £54.00
£54.00
A black 4iiii GRX Precision 3.0 power meter for bicycles, showing the side view with the brand logo.
£379.00
£379.00 - £379.00
£379.00
£349.00
£349.00 - £349.00
£349.00

4iiii GRX Precision 3.0 Power Meter

4iiii

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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£379.00
£379.00 - £379.00
£379.00
£349.00
£349.00 - £349.00
£349.00
A black 4iiii Dura-Ace 9200 Precision 3.0 power meter for bicycles.
£499.00
£499.00 - £499.00
£499.00
£479.00
£479.00 - £479.00
£479.00

4iiii Dura-Ace 9200 Precision 3.0+ Power Meter

4iiii

Unleash Peak Performance with the 4iiii Dura-Ace 9200 Precision 3.0+ Power MeterExperience world-class power measurement in a sleek, lightweight de...

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£499.00
£499.00 - £499.00
£499.00
£479.00
£479.00 - £479.00
£479.00
A black 4iiii Precision 3.0 power meter for bicycles, with a badge indicating compatibility with Apple Find My.
£339.00 - £339.00
£339.00
£339.00 - £339.00
£339.00

4iiii 105 R7100 Precision 3.0+ Power Meter

4iiii

Elevate your training with the 4iiii Precision 3.0+ Power Meter, purpose-built for Shimano 105 R7100 cranksets. Designed to help cyclists maximise ...

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£339.00 - £339.00
£339.00
£339.00 - £339.00
£339.00
A black 4iiii XT Precision 3.0+ power meter for bicycles, with a visible logo and branding.
£379.00 - £379.00
£379.00
£379.00 - £379.00
£379.00

4iiii GRX Precision 3.0+ Power Meter

4iiii

Unlock next-level performance with the 4iiii GRX Precision 3.0+ Power Meter, the lightest, most advanced model in 4iiii’s line-up. Designed for ser...

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£379.00 - £379.00
£379.00
£379.00 - £379.00
£379.00
A black 4iiii XT Precision 3.0+ power meter for bicycles, with a visible logo and branding.
£379.00 - £379.00
£379.00
£379.00 - £379.00
£379.00

4iiii XTR Precision 3.0+ Power Meter

4iiii

Unlock your full potential with the 4iiii XTR Precision 3.0+ Power Meter, a compact, lightweight and ultra-precise tool trusted by elite athletes a...

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£379.00 - £379.00
£379.00
£379.00 - £379.00
£379.00
A black 4iiii Fliiiight Smart Trainer for indoor cycling, featuring a foldable design and mounted on a gray floor against a dark background.
£479.00
£479.00 - £479.00
£479.00
£449.00
£449.00 - £449.00
£449.00

4iiii Fliiiight Smart Trainer

4iiii

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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£479.00
£479.00 - £479.00
£479.00
£449.00
£449.00 - £449.00
£449.00
£659.00
£659.00 - £659.00
£659.00
£619.00
£619.00 - £619.00
£619.00

4iiii Factory Install Precision 3.0+ PRO Power Meter

4iiii

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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£659.00
£659.00 - £659.00
£659.00
£619.00
£619.00 - £619.00
£619.00
A black 4iiii GRX Precision 3.0 power meter for bicycles, showing the side view with the brand logo.
£479.00
£479.00 - £479.00
£479.00
£449.00
£449.00 - £449.00
£449.00

4iiii XTR Precision 3.0 Power Meter

4iiii

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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£479.00
£479.00 - £479.00
£479.00
£449.00
£449.00 - £449.00
£449.00
A black 4iiii GRX Precision 3.0 power meter for bicycles, showing the side view with the brand logo.
£329.00
£329.00 - £329.00
£329.00
£299.00
£299.00 - £299.00
£299.00

4iiii XT Precision 3.0 Power Meter

4iiii

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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£329.00
£329.00 - £329.00
£329.00
£299.00
£299.00 - £299.00
£299.00
A black 4iiii XT Precision 3.0+ power meter for bicycles, with a visible logo and branding.
£379.00 - £379.00
£379.00
£379.00 - £379.00
£379.00

4iiii XT Precision 3.0+ Power Meter

4iiii

Designed for trailblazers and endurance riders alike, the 4iiii XT Precision 3.0+ Power Meter delivers pro-level performance in a compact, lightwei...

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£379.00 - £379.00
£379.00
£379.00 - £379.00
£379.00
£479.00
£479.00 - £479.00
£479.00
£459.00
£459.00 - £459.00
£459.00

4iiii Dura-Ace 9100 Precision 3.0 Power Meter

4iiii

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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£479.00
£479.00 - £479.00
£479.00
£459.00
£459.00 - £459.00
£459.00
£1,120.00
£1,120.00 - £1,120.00
£1,120.00
£1,099.00
£1,099.00 - £1,099.00
£1,099.00

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

4iiii

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 ...

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£1,120.00
£1,120.00 - £1,120.00
£1,120.00
£1,099.00
£1,099.00 - £1,099.00
£1,099.00
£875.00
£875.00 - £875.00
£875.00
£825.00
£825.00 - £825.00
£825.00

4iiii Ultegra FC8100 Precision 3.0+ Pro Power Meter

4iiii

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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£875.00
£875.00 - £875.00
£875.00
£825.00
£825.00 - £825.00
£825.00
A black 4iiii Ultegra R8100 Precision 3.0+ Power Meter for bicycles, with a visible logo and branding.
£425.00
£425.00 - £425.00
£425.00
£399.00
£399.00 - £399.00
£399.00

4iiii Ultegra R8100 Precision 3.0+ Power Meter

4iiii

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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£425.00
£425.00 - £425.00
£425.00
£399.00
£399.00 - £399.00
£399.00

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.