SRAM RED eTap AXS Rear Derailleur 12 Speed Short Cage model-tr6-4 Specialized S-Works Epic Mountain Bike

Specialized S-Works Epic Mountain Bike - 2018

Cervelo P2 Ultegra Time Trial Bike - 2012

Veloflex Corsa 25 Tire 700c x 25mm 320 TPI Clincher

It also has a wider external width (28mm) that optimizes the aero performance of 25mm tires

SRAM RED eTap AXS Rear Derailleur 12 Speed Short Cage model-tr6-4 Specialized S-Works Epic Mountain BikeThe SRAM RED eTap AXS rear derailleur is AXS enabled for easy personalization and designed for both 1x and 2x systems. Orbit advanced chain management technology keeps it silent and secure no matter the terrain. Component upgrades include faster pulleys, bearings, motors and signals, to improve speed in every way.