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Honda CB Charging System Kit: Rotor & Regulator

Partial charging system replacement kit for Honda CB series DOHC (Dual OverHead Cam) motorcycles. The K902 kit includes a F901 rotor, and a R210 regulator/rectifier at a 10% savings over buying the components separately. Both parts are easy to install and are perfect replacements for your OEM parts.
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Was: $224.00
Sale: $205.00
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Save: $19.00


The K901 kit is a complete new charging system in a box! The kit includes the F901 rotor, and a R210 regulator/rectifier. You save 10% when purchasing the kit over both parts individually.

F901 Field Coil Charging Rotor
The F901 is a high quality OEM style replacement for Honda field coil rotors in Dual OverHead Cam Honda CB & Nighthawk models. This rotor fits many CB series motorcycles from the 70's & 80's. The field coil is wound to stock specifications. We have upgraded the rotor for extreme reliability with a new core for the field coil. The field coil is wound around a durable protective core to keep the wire windings isolated from the metal body of the rotor. Our rotor has a machined face with less runout the OEM rotors. The slip rings on the face are of extremely high quality copper. The F901 is an easy installation for years of trouble free reliability from your Honda engine. Easy bolt-in installation just like the stock rotor.

R210 Regulator/Rectifer
The R210 is a high quality regulator/rectifier, designed to replace the OEM units on Honda CB DOHC motorcycles. This part is made with the highest quality components, and an intelligent heat sink design to keep heat down, and maintain a stable voltage while having a constant charge at any RPM. It works perfectly with our Honda DOHC CB rotors & stators, efficiently regulating field coil voltage to keep a perfect charge at all times, under all riding conditions. Much more reliable than the original units!

We highly recommend replacing your rotor brushes with our A100 brush set along with your new rotor. Worn brushes can cause a new rotor not to function, or function improperly.
Click here for brushes:

Technical Specifications

Rotor Field Coil Resistance: 4.4ohms, measured between slip rings on rotor face.
Stator Coil Resistance: 0.3ohms


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