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CAT # FWB-352 (1 Review) Write a Review

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Product Description
35 AMP BRIDGE. 200 P.I.V. 1 1/8" square.
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to
(This item was manufactured prior to August 31st, 2018)

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Customer Reviews (1 Review)

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Great, cheap upgrade for vintage motorcycles.

Reviewer: from Detroit, USA

Most motorcycles made prior to the mid-to-late 1970's use a selenium rectifier to convert AC from the alternator to DC to charge the battery. These solid-state rectifiers are about 7% more efficient with zero current loss and are less fragile (both physically and electrically). This allows you to run the headlight during the daytime for safety--and to comply with the newer laws--without running the battery flat. For smaller bikes, such as my '73 Honda CB350 twin, this is a direct replacement and takes about 5 minutes to install. If you have a three-phase alternator (generally 550cc engines and above), you'll need two of these components wired together in parallel (wiring diagram: One caveat: Make sure that the device you're replacing isn't a combination regulator/rectifier or you'll overcharge the battery and boil it dry. Or, alternately, you can build a replacement, solid-state regulator too.

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