CeramicSpeed OSPW X SRAM Red AXS XPLR E1

The CeramicSpeed OSPW X SRAM Red AXS XPLR E1 replaces the stock rear derailleur pulley cage with a system built specifically for SRAM's 13-speed AXS XPLR E1 gravel drivetrain, and it's fully compatible across Red, Force, and Rival AXS XPLR E1 groupsets. CeramicSpeed sized the pulleys at 14 teeth up top and 20 teeth on the bottom, larger than a stock cage, which reduces the angle the chain has to wrap around and cuts drivetrain friction as a result.

The pulley wheels use CeramicSpeed's ALPHA Disc design — a composite tooth profile for wear resistance and quieter running, paired with a solid aluminum disc that closes off the gaps between spokes so sticks, gravel, and other debris can't lodge inside the wheel. Nested inside those pulleys is CeramicSpeed's patented ADR technology: a stainless-steel dust cover combined with a bladed groove structure that actively pushes contaminants away from the bearing as the pulley spins, rather than letting them collect near the seal. The bearings themselves are hand-built hybrid ceramic units, chosen specifically to pair with the ADR system for low friction that holds up over time.

The cage is a reinforced, molded carbon fiber construction, built for strength and durability without adding weight — a meaningful detail on a gravel-specific product that's going to see rocks, roots, and rough terrain a road-only OSPW system never would. It comes in Black and Silver and bolts directly onto a SRAM AXS XPLR E1 rear derailleur, making it a straightforward upgrade for gravel riders who want reduced friction and real protection against the debris gravel riding throws at a drivetrain.