Ratio Technology 1x12 Road Upgrade Kit

This upgrade kit 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.

The Ratio 1×12 Road Upgrade Kit 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

In your kit you will find:

Ratio 1×12 Road ratchet, with shift spacing specially designed for AXS™ 12 speed cassettes

Ratio 12 tooth jockey wheels with stainless Enduro bearings and labyrinth seals, specifically designed for AXS™ Flattop™ 12 speed chains

M2.5 screw for shifter ratchet replacement

Ratio chainstay sticker

To use this kit you will need:

SRAM 10 or 11 speed road shifters. If using 10 speed shifters you will also need a cable spool available separately here

SRAM 1x derailleur from the Force 1™, Rival 1™ or Apex 1™ groups

A SRAM 12 speed eTap™ AXS™ 12 speed cassette from the Red™, Force™ or Rival™ groups

A SRAM 12 speed eTap™ AXS™ 12 speed chain from the Red™, Force™ or Rival™ groups

A chainring compatible with the 1×12 speed eTap™ AXS™ groups

An XDR™ freehub.