Serfas MR-4

The MR-4 is designed to fit standard handlebars with a diameter between 21mm and 26mm. It is compatible with most road, hybrid, and commuter bikes, but you should measure your bar diameter before purchasing to ensure a secure fit.

The lens is constructed from blast-resistant glass, which is significantly more durable than standard glass. While it is designed to withstand the impacts and vibrations of daily riding, it is not indestructible, so it is still best to avoid direct, high-force impacts.

At 119 grams, the MR-4 is lightweight and should not noticeably impact your bike's handling or balance. Its secure mounting system ensures it stays in place even when riding over rougher terrain or bumps.

Yes, the mirror features a 360-degree adjustable design. While you can tweak the angle on the fly, it is safest to set your preferred viewing position before you start your ride to ensure the mount is tightened securely.

While the MR-4 is built with durable nylon fiber and blast-resistant glass, it is primarily designed for road and commuter use. If you are riding on technical trails with tight clearances, a handlebar-mounted mirror may be prone to snagging on branches or obstacles.