For Sym GTS125 HD125 HD200 EVO EFI HD 2 125 200 JOYRIDE 125 200 200i 67-31600-M56-000-M1 Material: This motorcycle voltage regulator is made of a special material that combines wear resistance and reliability, ensuring a stable power output during daily use. Function: The voltage regulator rectifier maintains stable voltage, minimizes noise interference, accelerates throttle response, and shortens engine start-up time. Purpose: It helps dissipate excess voltage, improves charging efficiency, prevents battery overcharging, provides high reliability, and allows for quick rectifier replacement. Feature: Stabilize voltage, reduce clutter, improve low-speed driving, shift gears more smoothly, and improve ignition effect. Easy to use: Installation can be successful with simple operations. Repairs can be completed in a short time and require little to no mechanical expertise. Installation is simple and no complex tools are required.