How much does the Apex mechanical system weigh? Apex XPLR drivetrain weighs 2872g.Apex mechanical with Eagle (Mullet style) drivetrain weighs 3062g. Related articles When is Apex 12-speed mechanical available for retail aftermarket purchase? What is the weight of the XPLR derailleur, cassette, and crankset? Are 12-speed Apex mechanical shift levers compatible with Eagle mechanical rear derailleurs? What is the MSRP for a full Apex mechanical groupset? Why is my SRAM Force eTap AXS drivetrain noisy, especially the cassette?