Your bike is your freedom. Protect it with accuracy.
Threo Bicycle Wear Indicator accurately measures bicycle chain stretches and features a wear indicator that quickly identifies when it needs replacing. Made from durable materials to suit road and mountain bikes, our compact tool is a must-have for cycling enthusiasts of all levels.
Accurate measurement
Threo indicator accurately measures the stretch of your chain, allowing you to determine when it needs replacing.
Durability
Made from high-quality and durable materials, our compact tool is built to last for road and mountain bikes.
Optimum performance
Maintain your bike in its best condition, preventing the need for expensive repairs. Achieve the best ride performance effortlessly.
More reasons to love our Threo chain indicator
Color Palette 
Active Lifestyle
Compact
Ergonomic Design
Aengus –
I really like this tool. It is super easy to use and it provides the best accuracy. Recommended!
Brian –
Zack –
This tool gives an exact reading of chain wear and is very precise. It’s also more comfortable than the ones with a window. Portable and compact as well!
Joseph –
Ossian –
Aidan –
It’s an easy to use and good tool, does what it’s supposed to do. Would recommend.
Eamon –
Teague –
Fearghus –
It’s a great tool that lets you know if your chain is worn a little or a lot. Good quality, seems durable and definitely helps.
Cathal –