We use cookies to improve your experience on our website and to show you personalised content.
You can read our Cookie and Privacy policy or manage them individually.
You can read our Cookie and Privacy policy or manage them individually.
Description
Accurate and precise data are vital for effective training and the 4iiii Precision 2.0 3D Shimano 105 5800 Power Meter will allow you to train smarter and harder. The unit itself has a compact and lightweight design which adds a mere 9g and is installed into a black or silver Shimano 105 5800 crank arm.
Using 3D technology, this Precision power meter measures tri-axial strain on the left crank arm for extremely accurate measurement of your power output (+/- 1% error margin) and provides you with highly dependable cadence data, so you can train efficiently for improved performance and results.
With a battery life of more than 100 riding hours, you can see your remaining battery life via the 4iiii app so you will never run out mid-ride. The unit is compatible with most fitness apps including Strava and Wahoo Fitness, and Garmin, Wahoo and Cateye head units plus others supporting Bluetooth Smart and ANT+.
Please note: Images are shown for representation of design only. Power meter will come installed on a Shimano 105 5800 crank arm.
Please note: To check whether the 4iiii power meter will be compatible with your frame, please follow the instructions on by clicking this link.
Still unsure? Contact us here for more information.
Delivery & Returns
Reviews
Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".
Q&A
Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".
Oh, dear. You tried too many passwords and now your account has been locked for the next 30 minutes.
Not sure of your password? Reset using the link below.
We've sent you an email to reset your password.
To create your new password, click the link in the email and enter a new one. Didn't receive the email? Check your junk email.
Please enter your registered email address below and we'll send you an email explaining the next step.
Select a store
Select the store you visit most frequently below and their stock information will show on product pages.
Important Update for Our US Customers
We regret to inform you that due to ongoing challenges related to current US tariffs, shopping on Sigma Sports is temporarily unavailable for customers based in the United States.
We understand how disappointing this may be and sincerely apologize for any inconvenience caused. Please rest assured that we are actively exploring solutions to resume service and find the best way to support our US community.
We appreciate your patience and understanding during this time, and we look forward to welcoming you back as soon as possible.
If you require any further assistance, please reach out to the customer services team
— The Sigma Sports Team