Features:Preventing over charging battery and improve charging capability.Designed with heat sink fins for better cooling, long service life.Solidstate electronic component, help to dissipate excess voltage.Original standard, perfectly match to the original motorcycle.Easy to install, just plug and play, no instructions required.Compatible for Yamaha YZFR1 19992001 R6 19982002.Specification:Condition: NewMaterial: Aluminum AlloyColor: BlackSize: 88 * 90 * 27mm3.5 * 3.5 * 1.1inPackage Weight: approx.232g8.2ozFitment:for Yamaha YZFR1 19992001for Yamaha YZFR6 19982002for Yamaha YZF600 19962005for Yamaha YZF600R 19952007for Yamaha FZ6FZ6NFZ6S 20042009for Yamaha FZR600 FZR600R 19951999for Yamaha XP500 TMAX500 20012007for Yamaha TDM850 19962001Package list:1 * Motorcycle Regulator Rectifier