As cyclists, we design the products we want on our bikes. The Ratio 12-Speed Upgrade Kit allows you to operate an Eagle derailleur with your existing SRAM11-speed 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.

IMPORTANT: To fit this kit your chain stay or seat stay derailleur cable stop must be over 70mm from the centre of the dropout. For those bikes where it is less than 70mm choose our112 Wide Upgrade Kit Rear Cable Exit.

In your kit you will find:

1. Ratio 12-speed ratchet, with shift spacing specially designed for Eagle cassettes
2. Ratio cable fin, replacing the existing cable fin on an Eagle derailleur
3. Ratio cable adjuster, providing indexing ability on a mountain bike derailleur
4. Spare cable fin circlip
5. M2.5 screw for shifter ratchet replacement
6. Ratio chainstay sticker

To use this kit you will need:

1. SRAM 11-speed shifters from the Red, Force, Rival or Apex groups or the 10-speed S-700 shifters.
2. An Eagle derailleur from the XX1, X01 or GX groups. The kit isNOT COMPATIBLEwith SX and NX derailleurs as the cable fins on these derailleurs are riveted in place.
3. A SRAM Eagle 12 speed cassette. We cant confirm that aftermarket cassettes will perform properly with your drivetrain.
4. A 12 speed chain for SRAM Eagle drivetrains.
5. A 112 speed compatible chainring.