FSA Afterburner MTB Stem

This stem is designed for a standard 31.8mm handlebar clamp diameter and a 1-1/8 inch steerer tube, which covers the vast majority of modern mountain bikes. If your current setup uses these standard dimensions, this stem will be a direct fit.

Yes, the stem features a 6-degree rise. You can install it in either a positive or negative orientation to fine-tune your cockpit height and reach, allowing you to prioritize either a more upright, comfortable position or a lower, more aggressive stance.

Absolutely. It is constructed from AL6061/T6 aluminum using a 3D forging and CNC machining process, which creates a high strength-to-weight ratio. It is specifically engineered to handle the rigors of off-road riding while keeping the front end of your bike lightweight.

The stack height is 40mm. This measurement is important because it dictates how much space the stem takes up on your fork's steerer tube; you need to ensure you have enough steerer tube length available to accommodate this height.

The four-bolt faceplate provides a more secure and even clamping force across the handlebar compared to two-bolt designs. This ensures a stiffer interface, which translates to better steering precision and control when you are navigating technical terrain.