MZB RD350 RD400 Race Ignition. From MZB Germany, high performance race, solid state ignition for aircooled Yamaha RD350 and RD400, RD250. Highspeed up to 22K rpm, magnet based ignition for vintage racing applications. At 18.000rpm (36.000 sparks/min) still 25 Kilovolts output. 3.000-8.000rpm = 40kV, Diameter of rotor is 59mm, rotor weight is 180 gramms. Note: Race only, no charging / lights Very stable ignition with high energy spark, better starting, more efficient burn, very lightweight, total system at 850gr Includes: documentation / assembly instructions wiring diagram This system is manufactured to exacting standards and all components and machining are top notch high and quality. What you'd expect from a German company.Manufactured by MZ-B imported from Germany. Economy Cycle - authorized US distributor / re-seller. Units in stock and ready for immediate delivery. Guaranteed from manufacturing defects for 24 mos.You will need a basic understanding of motorcycle electrical systems and basic mechanical knowledge to install this system or you can have your own mechanic or local bike shop perform the installation. The system takes 3-4 hours to install and includes comprehensive instructions.