This is a brand new, top-quality replacement regulator rectifier for your 1977-1979 Yamaha RD400. This redesigned unit uses the latest technology and highest quality materials available, making it sturdy and reliable. This regulator rectifier has been manufactured to precisely control voltage and current, maximizing power without risking damage to the generator. Accurate voltage control is necessary to maintain a proper charging rate on the battery. This unit is cost-efficient and easy to install. This product meets or exceeds all factory specifications.
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