What disc brake pad compound options does SRAM offer for SRAM RED and Force eTap AXS HRD brakes? SRAM USA May 23, 2019 20:19 Updated Organic and metal sintered. Related articles What type of brake pad compound comes stock with SRAM RED and Force eTap AXS HRD disc brakes? Are 11-speed SRAM RED eTap derailleur batteries compatible with SRAM RED and Force eTap AXS derailleurs? What size disc brake rotors does SRAM recommend for eTap AXS HRD? What is the max cog size that is compatible with SRAM RED or Force eTap AXS™ rear derailleurs? Is there a 2x version of the RED or Force eTap AXS™ crankset that uses a 4-bolt spider? Comments 0 comments Article is closed for comments.