Everything you need to bring AXS wireless shifting to your Eagle drivetrain, in one complete kit. Combining the wireless performance of the S500 Eagle AXS rear derailleur with the personalization of the AXS Pod Controller, this kit includes all the hardware and accessories needed to install, configure, and power your setup. If you're already running Eagle components, this is your most straightforward path to AXS without committing to an entirely new groupset. Whether you're chasing an upgrade or simply looking for great-value replacement parts, the S500 Eagle AXS Upgrade Kit has you covered. Features The S500 Eagle AXS derailleur features a Type 3 cage damper for reliable chain retention and composed, quiet descending AXS connectivity enables effortless wireless setup, personalization, and compatibility across SRAM MTB and Road AXS components Compatible with 50t and 52t Eagle cassettes (sold separately) The AXS Pod Controller's intuitive two-button "click and fire" design delivers just the right amount of input resistance for confident, precise activation Button assignments can be fully customized via the AXS App, with ergonomically adjustable buttons and subtle grip texturing for a comfortable, tailored feel Details: Kit Includes Derailleur Controller Kit Includes Derailleur: Eagle AXS S500 rear derailleur Controller: AXS Pod Battery: AXS battery Charger: AXS USB-C charger (USB-C cord not included) Extras: Chain Gap tool and quick link for easy installation Eagle AXS S500 Rear Derailleur Model ID: RD-S500-E-B1 Speeds: 12-Speeds Shift Tech: Wireless Max Tooth: 52t Cage Material: Aluminum Drive Config: 1x Chain Tech: Eagle AXS POD Model ID: EC-AXS-POD-D1 Controller Type: Wireless Orientation: Left, Right Clamp: Discrete Rocker Paddle: Optional, not included