Xbox Series X/S Controller LB/RB Bumper Button Replacement Kit

Function and Compatibility

The LB (Left Bumper) and RB (Right Bumper) buttons are shoulder buttons located on the top of the Xbox Wireless Controller. These buttons are prone to damage, breakage, or loss of springiness over time due to intensive use.

Replacement kits are designed specifically for the Xbox Series X and Xbox Series S controller model. They are NOT compatible with Xbox One, Xbox One S/X, or Xbox Elite controllers due to internal design differences .

Kit Contents

A standard replacement kit for these buttons includes the necessary physical replacement parts. While contents vary by manufacturer, a typical kit contains:

• Replacement Buttons: A set of LB and RB bumper buttons .

• Middle Bracket Bar: A small plastic bar that sits between the shoulder buttons and is often included with the replacement buttons .

• Repair Tools: The kit includes the precision tools required to open the controller casing, generally a T6 and T8 screwdriver (Torx screwdrivers) and a prying tool to safely separate the controller shell without causing damage .

• Spare Screws: Some kits include replacement screws for the controller’s back cover .

Material and Installation

The replacement buttons are typically made from high-quality ABS plastic, designed to be as durable as the original part . Installation requires disassembling the controller, which involves removing the side panels, unscrewing the outer shell, and carefully swapping the old buttons for the new ones . This is considered a technical repair that requires basic electronic repair experience .