
Vintage motorcycle electrical parts
Keep your old bikes charging.
Rectifiers, regulator rectifiers, and AC regulators for vintage Japanese motorcycles.
Application focusedModel and year fitment guidance
Real product photosThe part shown is the part we sell
USPS shippingCalculated from accurate packaged weights
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Find the right charging part.
Select a make, model, and year. Results come from the fitment data stored with each Brain Tarp part.
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Charging-system essentials.
From the catalog
Popular charging parts.

6 Volt Regulator Rectifier for CB125S XL125s XL185s XL250s 31600-428-003
$39.99
Brain Tarp 12 Volt Regulator Rectifier Upgrade - AFM007
$36.99
Brain Tarp 12 Volt Regulator Rectifier Upgrade - AFM008
$36.99
Brain Tarp 12 Volt Regulator Rectifier Upgrade - AFM009
$36.99
Brain Tarp 6 Volt Regulator Rectifier Upgrade - AFM017
$36.99
Brain Tarp 6 Volt Regulator Rectifier Upgrade - AFM019
$36.99
Brain Tarp 6 Volt Regulator Rectifier Upgrade - AFM020
$36.99
Brain Tarp Heavy-Duty Honda Rectifier - BT006
$27.99Why Brain Tarp
Small parts. Serious attention to detail.
Vintage charging systems are rarely one-size-fits-all. Connector style, system voltage, grounding, and model-year changes matter.
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