Madrone Cycles emerged in 2024 with its booth at Sea Otter Classic, showcasing striking aftermarket pieces to prolong the life of SRAM rear derailleurs ... with 9-,10-,11-, and 12-speed ...
There is also a separate and less expensive 9/10-speed set of mechanical shift ... hydraulic brake calipers & rotors, 1x crankset, rear derailleur, cassette, and chain would retail for $896.