Vision SMR ACR Stem

ACR stands for Aerodynamic Cable Routing. This system is designed to route your brake and derailleur housing internally through the stem and into the frame, which cleans up your cockpit and reduces aerodynamic drag.

Yes, as long as your handlebars have a 31.8 mm clamp diameter, which is the industry standard for most modern road and gravel bikes. It is compatible with a wide range of drop bars.

While internal routing is cleaner, it does add a step to maintenance. You will need to disconnect your cables or hoses to remove or swap the stem, so it is best suited for riders who are comfortable with basic mechanical adjustments.

You can physically install the stem, but you won't be able to utilize the integrated cable routing feature. If your frame and headset aren't designed for internal routing, the cables will simply run externally as they would with a standard stem.

No, the -6 degree angle is fixed. This is a standard geometry for road and gravel bikes, providing a balanced position that works well for both aggressive racing and endurance riding.