I used the Ratio conversion to bring both my old 10 and newer 11 speed SRAM drop bar shifters to 12 speed spec. Highly recommend! https://bikepacking.com/gear

I used the Ratio conversion to bring both my old 10 and newer 11 speed SRAM drop bar shifters to 12 speed spec. Highly recommend! https://bikepacking.com/gear/ratio-1x12-upgrade-kit-review/ https://bikepacking.com/gear/ratio-1x12-upgrade-kit-review/