CeramicSpeed OSPW RS Pulley Wheel System for SRAM Red D1/E1 and Force D1 AXS - Aluminum Pulley, 5 Spoke, Carbon Cage, Black, v2 EA Cage Assembly

Injection Molded Carbon Fiber reinforced PA cage offers new levels of strength and durability Anodized aluminum 5-spoke 15-tooth upper and 19-tooth lower pulley wheels are light weight and durable This OSPW System has handbuilt CeramicSpeed bearings installed in each pulley and features Grade 3 Silicon Nitride ball bearings that are 400% smoother, 128% harder and 58% lighter than standard steel balls normally used in the bicycle industry 2 customizable spring tension settings for optimal setup Compatible with SRAM Red D1/E1 and SRAM Force D1 AXS rear derailleurs Note; this OSPW system is not compatible with the SRAM RED XPLR, Force XPLR, or Rival XPLR eTap AXS rear derailleurs