Yamaha R-6 "S" (different from the "R" or "2CO" version. The "S" has a WHITE tachometer face, see photo above) Annitori QS PRO Quickshifter with fuel injector loom (YM2L4-Fi)
IF using OEM footrests, you need to purchase the 90mm shift rod AND "8mm to 6mm" conversion rod listed in our Spare Parts to install.
(All non-OEM setups please use our online guide to measure your shift rod, subtract 50mm for QS PRO sensor and purchase needed length(s).