absoluteBLACK brings wild HOLLOWcage derailleur pulley upgrade to SRAM eTap AXS
Debate the cost:performance ratio of oversized ceramic bearing pulley upgrades all you want, but there’s no denying that the absoluteBLACK HOLLOWcage is unique, and now it’s available for SRAM eTap AXS derailleurs too, with even greater noise reduction this time around. AbsoluteBLACK says their derailleur pulley upgrade solution is lighter, more aero, lower-friction, AND quieter
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