SRAM X-SYNC Red E1 Road Chain Ring - Threaded Mount - 12/13 Speed (4

Designed for use with our new RED XPLR AXS power meter, these replacement rings are purpose made for use with a Thread Mount spider design. This chainring mount system allows us to minimize weight, maximize stiffness and accuracy, and retain the ability to swap ring sizes. Available in five sizes to tailor your ride to your needs.Features:- Thread Mount design is light, stiff, and accurate- Compatible with all road Flattop chains- SRAM Thread Mount Chainring Removal Tool required for installationSpecifications:- Chainring Size: 38T- Bolt Circle Diameter (BCD): Thread Mount- Speeds: 12/13- Material (Chainring): Aluminum