SRAM Rival AXS XPLR E1 Rear Derailleur If you are ready to push the boundaries of where a drop-bar bike can take you, the SRAM Rival XPLR AXS E1 rear derailleur is the definitive upgrade for your gravel or all-road setup. Specifically designed for the modern 1x13-speed drivetrain, this unit offers a massive gear range with a 46T maximum capacity, ensuring you have the climbing gears necessary for steep, loose terrain without sacrificing the tight jumps you need for pace on the flats. The AXS wireless technology eliminates the headache of internal cable routing and provides instantaneous, crisp shifts even under the heavy load of a punchy climb or a muddy trek. Beyond its technical precision, this derailleur is built with the legendary durability of the Rival suite, making it a reliable partner for bikepacking adventures and grueling races alike. It features a spring clutch system that keeps your chain exceptionally quiet and secure over washboard descents, so you can focus on your line rather than mechanical noise. By integrating this 13-speed powerhouse into your build, you are investing in a future-proof system that balances elite electronic performance with an approachable price point, giving you every advantage of a pro-tier wireless drivetrain on every ride.  Please Note: Battery is not included - available separately, click here