![Master Drive (Left) Motor Controller for Ryobi 42 ZT480ex 48v Zero Turn Mower Master Drive (Left) Motor Controller for Ryobi 42 ZT480ex 48v Zero Turn Mower](https://zero-turn-mower.org/wp-content/uploads/Master_Drive_Left_Motor_Controller_for_Ryobi_42_ZT480ex_48v_Zero_Turn_Mower_01_ygt.jpg)
![Master Drive (Left) Motor Controller for Ryobi 42 ZT480ex 48v Zero Turn Mower Master Drive (Left) Motor Controller for Ryobi 42 ZT480ex 48v Zero Turn Mower](https://zero-turn-mower.org/wp-content/uploads/Master_Drive_Left_Motor_Controller_for_Ryobi_42_ZT480ex_48v_Zero_Turn_Mower_02_xw.jpg)
![Master Drive (Left) Motor Controller for Ryobi 42 ZT480ex 48v Zero Turn Mower Master Drive (Left) Motor Controller for Ryobi 42 ZT480ex 48v Zero Turn Mower](https://zero-turn-mower.org/wp-content/uploads/Master_Drive_Left_Motor_Controller_for_Ryobi_42_ZT480ex_48v_Zero_Turn_Mower_03_gsc.jpg)
![Master Drive (Left) Motor Controller for Ryobi 42 ZT480ex 48v Zero Turn Mower Master Drive (Left) Motor Controller for Ryobi 42 ZT480ex 48v Zero Turn Mower](https://zero-turn-mower.org/wp-content/uploads/Master_Drive_Left_Motor_Controller_for_Ryobi_42_ZT480ex_48v_Zero_Turn_Mower_04_kafv.jpg)
Master Rear Wheel Drive (Left) Motor Controller. Tested & Fully Functional. As shown in photos. For Ryobi 42 ZT480ex 48v Zero Turn Mower. This is the outboard one & has a larger connector-see photos. Please note these are series motors & cannot be tested just using a battery.