1x12 Road Ratchet

This ratchet allows you to pair 10 or 11 speed mechanical SRAM shifters and a 1x-specific Exact Actuation™ derailleur with a 12 speed eTap™ AXS™ cassette and chain. You’ll gain all the advantages of greater gear range and closer gear ratios without the expense or weight of electronic shifting.

NOTE: You will need to replace your 11 speed jockey wheels with SRAM eTap™ AXS™ compatible ones. We offer some in our 1×12 Road Upgrade kit.


The Ratio 12 Speed Road Ratchet allows you to operate a SRAM eTap™ AXS™ 12 speed cassette and chain with your existing SRAM road 10 or 11 speed shifters and 1x-specific Exact Actuation™ derailleur.

Using a 1×12 Road kit gives you following advantages:

  • Greater gear range and/or closer gear ratios than 11 speed
  • Lower cost than wireless electronic. Save $1800 on a Force™ build; $800 saving on a Rival™ build
  • Lower weight. Save 160g on a Force™ build; 220g on a Rival™ build
  • No batteries to keep charged
  • The reliability and serviceability of mechanical shifting
  • #humanpowered

In your kit you will find:

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

To use this ratchet you will need:

  1. SRAM 10 or 11 speed road shifters. If using 10 speed shifters you will also need a cable spool available separately here
  2. SRAM 1x derailleur from the Force 1™, Rival 1™ or Apex 1™ groups
  3. SRAM eTap™ AXS™ compatible jockey wheels. We offer some in our  1×12 Road Upgrade kit
  4. A SRAM 12 speed eTap™ AXS™ 12 speed cassette from the Red™, Force™ or Rival™ groups
  5. A SRAM 12 speed eTap™ AXS™ 12 speed chain from the Red™, Force™ or Rival™ groups
  6. A chainring compatible with the 1×12 speed eTap™ AXS™ groups
  7. An XDR™ freehub.