—$700

Gravel throws just about everything at your bike, and the RED XPLR AXS rear derailleur will happily take it all. Bring on the sticks, stones, and airport baggage abuse because the Full Mount derailleur design fits onto frames with the hangerless interface to make for the most robust and reliable gravel drivetrain possible. No adjustment screws mean setup is simpler than ever. And a surprise stick is no match for the Magic Wheel, as the debris-resistant lower pulley keeps the chain moving at all times. Purpose built for gravel, this 1x specific unit prioritizes shift precision and chain management no matter the terrain or conditions. Requires frame with UDH interface. 1x specific for use with 10-46t XPLR 13-speed cassette and SRAM road Flattop chains Hangerless Interface and Full Mount attachment allow for the most precise shifting and the ultimate resistance to impact Requires frame with UDH interface Carbon cage and ceramic pulley bearings Simple setup with no adjustment screws Superior chain management with MTB-inspired spring clutch Magic Wheel keeps the chain moving, even if debris enters the lower pulley Replaceable and rebuildable parts Compatible with existing AXS batteries (Sold separately) Item Specifications Chain Wrap Capacity (teeth) 36 Color Black/Silver Drivetrain Speeds 13 Largest Cog 46 Rear Der/Shifter Compatibility SRAM eTap AXS SRAM RED XPLR AXS 13-Speed Rear Derailleur E1 Rear Derailleur UPC: 710845899829

by SRAM

—$406.91

With the fast and accurate Di2 shifting technology, the Shimano 12-speed Ultegra RD-R8150 rear derailleur is extremely versatile thanks to a single cage length option compatible with 11-28, 11-30, and 11-34 cassettes. Compact design includes an integrated wireless unit, charger, switch Wider range capacity Max. low sprocket 34t LED status indicator Battery indicator, pairing, adjust mode etc. Item Specifications Cage Length Medium Chain Wrap Capacity (teeth) 39 Color Black Drivetrain Speeds 12 Largest Cog 34 Rear Der/Shifter Compatibility Shimano Road Di2 Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Shimano Ultegra RD-R8150 Di2 12-Speed Rear Derailleur Rear Derailleur UPC: 192790240961

by Shimano

—$378.23

Shimano's GRX RX825 Di2 12-speed rear derailleur features a built-in wireless connectivity unit and charging port, ensuring fast and reliable shifting for mixed-terrain riding and easy recharging. Integrated Shadow RD+ technology prevents chain slap and ensures precise shifting even on rough terrain. Thanks to built-in ON/OFF switch, wheel removal is easy too. The RD-RX825 is compatible with 11-34t and 11-36t 12-speed cassettes and supports Full or Semi-Synchronized shift modes, enhancing rider customization. Integrated wireless unit, charging port, and switch allows a compact design Offers fast and reliable shifting on rough terrain Adjustable chain stabilizer prevents chain slap Shimano Shadow RD+ offers a quiter drivetrain by utilizes a stablizer to reduce chain slap and provides a simple solution for chain drops Gravel-tuned clutch tension features a switch stabilizer ON/OFF to match terrain - ON for gravel, OFF for smooth roads LED status indicator to easier identify battery life, pairing, adjust mode, etc. Top sprocket: Max. 11t/Min. 11t Low sprocket: Max. 36t/Min. 34t Total Capacity: 40t Item Specifications Cage Length Long Chain Wrap Capacity (teeth) 40 Color Black Drivetrain Speeds 12 Largest Cog 36 Rear Der/Shifter Compatibility Shimano Road Di2 Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Shimano GRX RD-RX825 Di2 Rear Derailleur Rear Derailleur UPC: 192790310893

by Shimano

—$700

The heart of the AXS ecosystem is lighter, more efficient, and more capable than ever. Covering cassette ranges from 10-28t up to 10-36t, this wireless wonder has larger pulleys to decrease chain articulation and increase efficiency, and an Orbit fluid damper to keep everything in place over the rough stuff. One derailleur ready for 1x or 2x, on road or off. Orbit chain management technology keeps the drivetrain quiet and secure AXS enabled for easy setup, personalization, and reliability 16g lighter than previous generation Compatible with both 1x and 2x RED drivetrains Compatible with cassettes from 10-28t to 10-36t Larger X-Sync pulleys for increased efficiency Compatible with existing AXS batteries (Sold separately) Item Specifications Cage Length Medium Color Black Drivetrain Speeds 12 Largest Cog 36 Rear Der/Shifter Compatibility SRAM eTap AXS Rear Derailleur Mount Type 10x1 Standard Weight 262 SRAM RED eTAP AXS Rear Derailleur E1 Rear Derailleur UPC: 710845899812

by SRAM

—$814.99

The Shimano Dura-Ace RD-R9250 rear derailleur integrates the system charging port and a wireless connectivity unit all while delivering super fast, precise shifting worthy of any podium. A single cage length shifts cassettes from 11-28 to 11-34, offering exceptional versatility. Ultra-fast rear Di2 shifting Compact design includes an integrated wireless unit, charger, switch Wider range capacity Max. low sprocket: 34t CFRP rear derailleur plate LED status indicator Battery indicator, pairing, adjust mode etc. Item Specifications Cage Length Medium Chain Wrap Capacity (teeth) 37 Color Black Drivetrain Speeds 12 Largest Cog 34 Rear Der/Shifter Compatibility Shimano Road Di2 Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Shimano Dura-Ace RD-R9250 Di2 12-Speed Rear Derailleur Rear Derailleur UPC: 192790240954

by Shimano