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Rick's Motorsports Alternator Rotor

(2 reviews)

Item: 350842

Fits: 1982 Honda CB900C 900 Custom

$187.95

In Stock - Ships Next Business Day!

Rick's Motorsports Alternator Rotor


  • High-quality replacement OE alternator rotor
Specification Details
OEM Reference 31120-425-852
Warranty 1 Year Manufacturer Warranty

Vehicle Fitment


Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.

Honda
  • CB1000C Custom 1983
  • CB650 1979-1981
  • CB650C 650 Custom 1980-1981
  • CB650SC Nighthawk 650 1982
  • CB750C 750 Custom 1980-1982
  • CB750F 750 Super Sport 1979-1982
  • CB750K 750 Four 1979-1982
  • CB750L Limited 1979
  • CB750SC Nighthawk 750 1982-1983
  • CB900C 900 Custom 1980-1982
  • CB900F 900 Super Sport 1981-1982

Customer Reviews

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Charging System maintenance

By   on  Verified Purchaser

The new Rotor works great as the electrical system is charging per OEM specification, like when it was new over 40 years ago! I love these old CBs...


Happy customer

By   on  Verified Purchaser

I was very pleased with the product and the timely manner it arrived, was everything it is advertised as. Thanks


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Questions & Answers

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You seem to be very knowledgeable when it comes to charging systems. My 82 650 Nighthawk has an issue where it runs fine but after i shut it off and try to restart it the battery is dead. I am waiting on a flywheel puller to come in and i am going to test the rotor and stator. Is there a common issue on this particular motorcycle you have heard of? This is my first CB motorcycle and have never had any problems with any of my other bikes i have previously owned. Any help would be greatly appreciated.

Considering the vintage of the bike, it's unsurprising that something electrical is going to fail. On this bike, the stator often fails first, but slowly. That is, voltage output slowly falls off with the rectifier circuit having to work harder and harder to maintain voltage over time. This usually occurs over the span of a few days. After that, the rectifier circuit also fails, so now you've got a bike that's basically running on battery power. And since that battery isn't getting any incoming voltage, that too, doesn't last long! So, once you've got everything tested, you'll likely find stator output to be poor and with that, you probably won't even need to test the regulator/rectifier as that's likely out of spec as well. We always recommend, especially on older machines, that the stator and regulator/rectifier be replaced at the same time.

By Staff
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