The best cycling gear reviewed by and curated for you.

4iiii Precision 3 Power Meter Shimano 105 R7000

The 4iiii Precision 3 Power Meter is reliable and easy to live with. A longer battery life than previous models (800 hours) means fewer battery swaps, and consistent data makes it easy to train with on a daily basis. For UK users this is also the fastest way to get your existing crank converted to power measuring. There's a lot to love.

Installation is super simple, and if you're running a few bikes with Shimano cranks then this is a pretty easy one for swapping between them.

In terms of this consistency, the 4iiii Precision 3 has been perfect. The device wakes up and connects quickly to a bike computer, the data delivered has been reliable, and there have been no bugs to cause frustration. The numbers have been reliable, which is just what is needed for regular training.

4iiii Precision 3 Power Meter Shimano 105 R7000-1

The Precision 3 is rated as IPX7 waterproof so you'll be safe to wash your bike and ride in the rain.

Buy this here

4iiii’s factory installation process – where you send off your existing left crank and it is turned into a power meter – is done in the UK. The cost is £299.99 and 4iiii will have it back to you in about a week.

All in, the 4iiii Precision 3 is a brilliant way to add power measuring to your bike for a sensible amount of money.