How To Slacken Head Angle

Slackening head angle is a technique used in mountain biking to adjust the geometry of your bike. It involves changing the angle at which the forks are attached to the frame, which can affect the handling and stability of your bike.

Why Slacken Head Angle?

There are several reasons why you might want to slacken head angle. One common reason is to improve descending performance on steep terrain. By slackening the head angle, you can increase the amount of trail your bike has, which can help it track better and feel more stable at high speeds.

How to Slacken Head Angle

To slacken head angle, you’ll need a few tools. First, you’ll need a torque wrench to ensure that your bolts are tightened properly. You’ll also need an Allen wrench or socket set to loosen and tighten the bolts.

  1. Start by removing the front wheel of your bike.
  2. Loosen the top bolt on the stem, which is located at the base of the steerer tube. This will allow you to adjust the angle of the forks.
  3. Use an Allen wrench or socket set to loosen the bolts that hold the forks in place. You’ll need to remove these bolts completely to adjust the head angle.
  4. Once the bolts are removed, use a torque wrench to tighten them back down to the manufacturer’s recommended torque specs. Make sure to double-check that they are properly tightened before riding your bike again.


Slackening head angle can be a great way to improve the handling and stability of your mountain bike, especially on steep descents. By following these simple steps, you can adjust the geometry of your bike to better suit your riding style and terrain.