Optiline STEAM phone holder for steering stem 12/25.1 mm Ø duo lock

The Stem phone holder for sport motorcycles is suitable for bikes with a hole in the steering stem, mainly for sports models but also for other segments. It is compatible with the entire line of Optiline cases and accessories with the patented Duolock quick-release system.

The Stem phone holder, like the Tube models, is placed inside the motorcycle's steering stem. Being made of die-cast metal, like the entire Titan Series, it is more durable compared to the range made of fiberglass-reinforced plastic. It’s an alternative solution to handlebar-mounted phone holders when there is not enough space for installation, such as in the presence of clip-on handlebars.

Once the Stem phone holder is inserted into the steering stem, you simply need to tighten the hex screw, allowing the components to expand and firmly adhere to the walls of the steering stem.

Before purchasing the Stem phone holder for sport motorcycles, check the size of your bike’s steering stem, for example, using a caliper, to ensure compatibility with your vehicle. Also, pay attention to the necessary clearance around the steering stem, such as in the presence of a steering damper.

Unlike other phone holders for sport motorcycles, the Stem comes with three adapters (included in the package) that allow it to be fitted on different steering stems ranging from 12 to 25.1 mm in diameter, divided into three sizes: S (12 – 15.1 mm), M (15.1 – 19.5 mm), and L (19.5 – 25.1 mm).

The rubberized ball is able to absorb some of the low-frequency vibrations coming from the engine or road surface (speed bumps, potholes, cobblestones) that are transmitted to the handlebars. With fewer vibrations passing to the phone holder, there is less risk of damaging the components found in the latest generation of smartphones.

The ball allows the phone holder to be fully adjustable, enabling its use and viewing in both vertical and horizontal positions. The ring allows the head to be locked once the optimal angle is found.