Ratio Rings
What’s it for?
The Ratio Rings are 1x-specific chainrings for 11, 12 and 13 speed drivetrains. The chainrings feature a directional narrow-wide profile to prevent chain drops both while pedalling and when freewheeling over rough terrain. The chainrings are currently available for SRAM 3 bolt direct mount, SRAM 8 bolt direct mount, 5 bolt 110 mm BCD fitment and 4 bolt 110 BCD for Shimano GRX.
Ratio Ring compatibility:
The Ratio Ring is designed for use with:
- Ekar* 13 speed
- SRAM Eagle* 12 speed
- SRAM Flattop* 12/13 speed including T-Type
- Shimano HG+* 12 speed chains
- 11 speed chains
The 5 bolt, 110 BCD pattern is the most common ‘road compact’ chainset bolt pattern. All the Ratio DM Rings are compatible with Shimano HG+* 12 speed chains too. Currently the Ratio DM Ring is only available for SRAM 3 bolt and SRAM 8 bolt cranks.
*AXS®, DoubleTap®, eTap®, SRAM®,SRAM APEX®, SRAM EAGLE®, SRAM FORCE®, SRAM RED®, SRAM RIVAL®, X0®, X01®, XX1® are registered trade marks owned by SRAM, LLC. Eagle™, Exact Actuation™, GX™, NX™, SRAM APEX 1™, SRAM Force 1™, SRAM RIVAL 1™, S-series™, SX™, WiFLi™, X-Actuation™, XD™, XDR™, XPLR™, XX™, Zero Loss™ are trademarks of SRAM, LLC. The use of these trademarks in the table below is for informative purposes only, and all trademarks remain the property of SRAM, LLC.
