SRAM RED chainrings D1 – Chainrings

By reducing the chainring size and increasing the gear range of the cassette, SRAM's product designers have Road Bike redefined and redesigned the gear ratio on Road Bike . This design innovation goes by the name of X-Range. At the same time, the 13-tooth gear step between the chainrings was retained to ensure precise shifting in every setup. The result is a more usable gear ratio in all configurations and fundamentally better shifting.

Features of SRAM RED X-Range chainrings
2x chainring setup with one-piece construction for faster, smoother, and more reliable shifting.
An improved tooth profile reduces wear, while a more durable surface treatment ensures long-lasting performance.
X-Range technology, in combination with the RED 12-speed cassette, offers a wider gear range and more comfortable gear spacing, so you're always in the right gear.
Improved front derailleur shifting performance for crisp and precise shifting.
The unique direct mount chainring design (not SRAM MTB DM compatible) enables a lighter, stiffer, and more durable crankset.