How to adjust the SRAM AXS on a Mountain Bike

If the gears ever get stuck, SRAM AXS electronic shifting systems can be adjusted with minimal effort. We'll show you, step by step, how to get your rear derailleur working again.

• Hex wrench, 3 mm
• Ruler or SRAM Chaingap Tool (compatible with the rear derailleur)
• Workstand (optional)

This tutorial describes how to set up SRAM Eagle AXS MTB systems. The images may show a different rear derailleur model and are for illustrative purposes only. For more details, please refer to the manufacturer's manual. You can find the tutorial on SRAM Eagle AXS Transmission shifting systems here. 

• H-screw: Outer end stop adjustment 
• L-screw: Inner end stop adjustment 
• B-screw: chain wrap adjustment

• Shift to the second-largest sprocket.
• Look at the rear derailleur from behind and check whether the upper pulley wheel (rear derailleur) is parallel to the second-largest sprocket.
• Otherwise, adjust the position by pressing the side function button on the handlebar controller while simultaneously pressing the up or down button to shift gears. This causes the rear derailleur to move 0.2 mm to the left (lower button) or to the right (upper button).

• Stay on the second-largest sprocket.
• On full-suspension mountain bikes, the chain wrap is adjusted within the SAG (negative travel). To do this, sit on the bike and ask someone to make the following adjustment.
• Look at the gap between the upper pulley wheel and the largest sprocket from the rear (disc brake side), and measure it with a ruler (starting from the outer edges of the large teeth). By turning the B-screw in or out, you can increase or decrease the gap.
• The required chain gap for Eagle AXS rear derailleurs is 3 mm.

Note: SRAM recommends using a Chaingap Tool compatible with your rear derailleur to adjust the chain wrap. The procedure is described in the respective manual (see above).

• Shift to the largest sprocket.
• Now turn the L-screw (clockwise) until the front end lightly touches the stop (on the opposite side). Then turn it back out a quarter turn.
• Shift to the smallest sprocket.
• Now turn the H-screw (clockwise) until the front end lightly touches the stop (on the opposite side). Then turn it back out a quarter turn.

• Shift through all the gears one by one.
• If the chain doesn't run smoothly and quietly in a particular gear, you can adjust the rear derailleur sideways in 0.2 mm increments (see step 1).

Your rear derailleur should now shift smoothly and run silently.
If it cannot be adjusted in this way, there may be various reasons such as a bent derailleur hanger. In such cases, the service workshop in your Rose store will be happy to help you.