Order Includes: 1x Regulator Rectifier. Compatible with Yamaha models: R1 YZFR1 1998-2001. Part Numbers: 5VX-81960-00-00, 4HM-81960-01-00, 4HM-81960-00-00, 4JH-81960-01-00, 4JH-81960-00-00, 5SL-81960-00-00. We strongly suggest comparing the posted picture to the unit(s) that needs to be replaced..
