Ratio Technology 1×12 Wide Ratchet

Original price was: $144.95.Current price is: $120.00.

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Ratio Technology 1×12 Wide Ratchet


This ratchet allows you to upgrade your 11 speed mechanical SRAM shifters to 12 speed. You can pair your upgraded shifters with a SRAM Exact Actuation™ derailleur and a cassette with Eagle™ sprocket spacing. This is the neatest solution on the market to gaining all the performance advantages of a wide-range 1×12 drivetrain on a gravel, road or touring bike without the expense of electronic shifting.

This product ONLY contains the ratchet. If you require a cable fin too then please see our upgrade kits, 1×12 Upgrade Kit – Forward Cable Exit and 1×12 Upgrade Kit – Rear Cable Exit. For more information on kit compatibility, check our compatibility guide.

View our Support and FAQs here.

As cyclists, we design the products we want on our bikes. The Ratio 1×12 Wide Ratchet allows you to run a SRAM Exact Actuation™ derailleur 12 speed with your existing SRAM 11 speed road shifters, gaining an unbeatable 500% or 520% range and 12 evenly spaced gears on your gravel, road or touring bike. For reference, a traditional 50/34 compact chainset with 11-28 cassette provides only 374% range.

In your kit you will find:

  1. Ratio 12-speed ratchet, with shift spacing specially designed for Eagle™ cassettes
  2. M2.5 screw for shifter ratchet replacement
  3. Ratio chainstay sticker

To use this kit you will need SRAM 11-speed shifters from the Red™, Force™, Rival™ or Apex™ groups or the 10-speed S-700 shifters.

To fit your ratchet to SRAM shifters for hydraulic brakes, see the following video*:

To fit your ratchet to SRAM shifters for cable brakes, see the following video*:

NOTE: On some older shifters, the reach adjuster will not spin freely when it bottoms out. Stop turning the reach adjuster screw as soon as you encounter resistance.

*Please note that modifying these components may void the original SRAM warranty. Ratio Technology Limited is in no way linked to SRAM LLC

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