How to adjust your SRAM AXS rear derailleur on a road 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, 2.5 mm
• Ruler or SRAM Chaingap Tool (compatible with the rear derailleur)
• Workstand (optional)

This tutorial describes how to set up SRAM eTap AXS and SRAM AXS Road 12-speed 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 (eTap AXS or AXS). For other shifting systems, go to the overview and select the right model.

• H-screw (outer end stop adjustment)
• L-shaped screw (inner end stop adjustment)
• B-screw (chain wrap adjustment)

• Shift to the small chainring in the front and the second-largest sprocket at the rear.
• 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 inner button on the left or right shifter while simultaneously pressing the shifter. This causes the rear derailleur to move 0.25 mm to the left (left shifter) or to the right (right shifter).

• Shift to the large chainring in the front and the largest sprocket at the rear.
• 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 appropriate gap depends on the largest sprocket on your cassette: 36 teeth = 5 mm, 33 teeth = 5 mm, 30 teeth = 10 mm, 28 teeth = 12 mm, 26 teeth = 14 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 small chainring at the front and the largest sprocket at the rear.
• Now turn the L-screw (clockwise) until the front end lightly touches the stop (on the opposite side).
• Shift to the large chainring at the front and the smallest sprocket at the rear.
• Now turn the H-screw (clockwise) until the front end lightly touches the stop (on the opposite side).

• Shift through all the gears one by one using the small and large chainrings.
• If the chain doesn't run smoothly and quietly in a particular gear, you can adjust the rear derailleur sideways in 0.25 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.