1. Suitability: This rectifier regulator is compatible with models such as YZFR1 19992001; YZFR6 19982002; YZF600 19962005. Dimensions: 88 x 90 x 27 mm / 3.5 x 3.5 x 1.1 inches. Please verify the model and dimensions carefully before ordering. 2. Aluminum Rectifiers: Designed to instantly supply devices with stable currents and voltages. Our rectifiers are crafted from quality aluminum alloy, offering scratch and wear resistance, durability, and heat dissipation for longevity. 3. Functionality: The rectifier regulates and stabilizes voltage, reduces interference noise, protects the battery and motorcycle circuitry, enhances ignition precision, improves throttle response, boosts performance, shortens engine start time, and effectively addresses acceleration, downshifting, and other issues—making it practical. 4. Easy Installation: The rectifier is plugandplay, designed as a direct replacement for old or damaged units. Installation is straightforward with no modifications, cutting, or drilling required.