SRAM Apex AXS RD-APX-E1

The SRAM Apex AXS RD-APX-E1 is the definitive choice for riders seeking the simplicity of a 1x drivetrain combined with the high-tech precision of wireless electronic shifting. Designed specifically for the gravel, bikepacking, and adventure categories, this 12-speed rear derailleur brings the AXS ecosystem to its most accessible price point yet. It features a robust Spring Clutch for exceptional chain retention, ensuring the drivetrain remains silent and secure over washboard gravel or technical trails. With its massive range compatibility—handling cassettes up to 44T—the Apex AXS derailleur allows you to build a bike capable of conquering the steepest climbs without the complexity of a front derailleur.

Key Features

• Wireless AXS Integration: Clean, cable-free installation and full connectivity with the SRAM AXS app for customization and easy battery monitoring.

• 1x Specific Logic: Optimized exclusively for single-chainring setups, providing a simpler, more intuitive riding experience with fewer moving parts.

• Spring Clutch Technology: A high-tension mechanical clutch keeps the chain planted on the pulleys, virtually eliminating chain drop and "slap" on rough terrain.

• X-Large Range: Designed to work perfectly with SRAM’s 11-44T XPLR cassettes, as well as 10-44T and 10-36T options.

• Durable & Resilient: Built to take a beating, featuring a high-strength aluminum cage and steel pulley bearings intended for the rigors of off-road exploration.

Specifications

• Drivetrain Speeds: 12-Speed Wireless

• Maximum Low Sprocket: 44T

• Minimum Low Sprocket: 36T

• Cage Material: Aluminum

• Pulley Bearings: Steel

• Connectivity: SRAM AXS (Wireless)

• Battery: SRAM eTap Battery (sold separately)

Typical Components Included

• RD-APX-E1 Rear Derailleur

• Chain Gap Adjustment Gauge

• User Manual

• (Note: Battery and Charger usually sold separately)