Nitto UI-25 Stem

The UI-25 is designed for a standard 1-1/8 inch threadless steerer tube, which is the most common size on modern road, gravel, and mountain bikes.

This stem is compatible with handlebars that have a 31.8 mm clamp diameter, which is the current industry standard for modern road and mountain bike bars.

The 5-degree angle provides a relatively neutral, slightly aggressive riding position. Depending on whether you flip the stem, it will either offer a slight rise for a more upright posture or a slight drop for a more aerodynamic, racy feel.

Yes, the UI-25 is constructed from durable aluminum and is built to handle the rigors of gravel and light trail riding, offering a secure and reliable connection for your cockpit.

Stem length significantly impacts your reach and handling. If you feel too stretched out, a shorter stem will bring the bars closer to you; if the cockpit feels cramped, a longer stem will open up your position and generally slow down the steering response.