Yamaha R1  GYTR / YEC Kit ECU Set 2018-2019 models. Enable to adjust the amount of fuel injection, ignition timing and etc, to use this ECU with kit wire harness. There are two types of basic control data for the ECU: SB (Supersport) and ST (SuperStock). CD-ROM, software manual and kit manual are included in this set.  For use with BX4-F2590-70-00, Wiring Harness (sold separately).

FITMENT: 2018-2019 Yamaha R1 (with YEC Kit Racing Wire Harness)