The CeramicSpeed OSPW X SRAM Alt Red/Force/Rival AXS XPLR is an exceptionally durable oversized pulley wheel system made for demanding riders. It features a wide range of compatibility with SRAM RED AXS XPLR, Force AXS XPLR, and Rival AXS XPLR, offering a 35-40% reduction in friction over a stock pulley system with stable chain retention and no added drag.