Sram Red Etap Axs D1, Rear Derailleur, Speed: 12, Cage: Medium, Black Wide Trail * Super bright rear lighting*

* Super bright rear lighting* Articulated turn signals* Fully customizable flashing patterns

Being seen on your bike at night never looked so good until Serfas' Thunderbolt Taillight hit the scene

but subtle undertones really optimize these lenses for fishing

with the addition of part number PRS-33

Sram Red Etap Axs D1, Rear Derailleur, Speed: 12, Cage: Medium, Black Wide Trail * Super bright rear lighting** SRAM AXS enabled for easy personalization* Orbit chain management technology keeps drivetrain quiet and secure* A single rear derailleur for all gearing combinations, including 1x and 2x * Improved motor and signal travel for faster shifting* Larger X SYNC pulleys and ceramic bearings for increased durabilityand efficiency* Compatible with existing eTap batteries