SRAM Apex XPLR AXS D1 12-Speed 44t Max Black Rear Derailleur

The SRAM Apex XPLR AXS D1 is a wireless electronic 1x rear derailleur for 12-speed cassettes up to 44t. It brings eTap AXS shifting and a spring clutch to SRAM's entry road tier, aimed at gravel and all-road bikes that run a single chainring.

SRAM lists it for 11-44t XPLR, 10-44t XPLR and 10-36t cassettes. It pairs through the AXS app like any other AXS derailleur. The battery is not included.

Who It's For

• Gravel riders building a 1x AXS drivetrain around a 44t or 36t cassette.
• Owners of Apex AXS shifters replacing a derailleur.
• Riders who want wireless shifting without moving up to Rival or Force.
• Consider a different derailleur if you run a 2x crank or a cable-actuated shifter.

What to Look For

• Battery: Not included. You need an SRAM AXS derailleur battery.
• Cassette: XPLR 11-44t or 10-44t, or a 10-36t. The listed maximum is 44t with 34t of chain wrap.
• Drivetrain: 1x only; it is not designed to work with a front derailleur.

Key Features

eTap AXS wireless shifting. No cables to route or stretch. Shift logic, button mapping and trim are set in the AXS app.

Spring clutch. SRAM fits a spring clutch for chain management on and off pavement, which keeps the chain quiet on washboard gravel.

1x-specific geometry. The derailleur is designed around wide 1x cassettes, so it doesn't need to accommodate a front shift.

Standard mount. Bolts to a 10x1 standard derailleur hanger.

Rider Intent Summary

• Biggest strengths: Wireless AXS shifting and a clutch at the Apex tier; reaches 44t.
• Tradeoffs: Battery sold separately; 1x only.
• What makes it different: The lowest-cost way into SRAM's AXS ecosystem for a gravel 1x.

Victory's Take

We like Apex XPLR AXS for riders who want wireless 1x gravel shifting at a sensible budget. Victory Bicycle Studio can set up and pair the system in the shop.

Specifications

• Brand: SRAM
• Model: Apex XPLR AXS (D1)
• Drivetrain speeds: 12
• Largest cog: 44t
• Chain wrap capacity: 34t
• Mount type: 10x1 standard
• Shifter compatibility: SRAM eTap AXS
• Cassette compatibility: 11-44t XPLR, 10-44t XPLR, 10-36t
• Battery: Not included
• Color: Black
• Part number: 00.7518.175.000