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Mosfet Upgrade

Discussion in 'Technical Help' started by chrisw, Aug 13, 2025.

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  1. Handy thread this for members :upyeah:
     
  2. There are quite a lot of these Honda Mosfet Reg/Recs on eBay. A common price is sub-£25.
    They would need a connection mod, but doable with female spade connectors.
    Here is the cheapest.
    https://ebay.us/m/xOzyZ8
     
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  3. I bought that for £16.
    Although it's not a MOSFET Reg/Rec as it's the SH type which is the Thyristor/SCR Shunt type.
    FH denotes MOSFET technology but it's still a shunt type
     
    #10 Petsmith, Feb 6, 2026
    Last edited: Feb 6, 2026
  4. Could be a FH020AA which is mosfet technology.
    Mosfets shunt but run cooler.
    The best are series Reg/Recs.
     
    #11 chrisw, Feb 6, 2026
    Last edited: Feb 6, 2026
  5. It's not a FH, it's a SH. Still good for the money.
     
  6. What are these compatible with ?
     
  7. Pretty much any single phase or 3 phase alternator. You may have to adapt the wiring but it's simple. Connect your 2 or 3 yellow wires to the plug with 3 contacts. Any way round is good. Then connect your battery to the other plug, one being positive and one negative.
     
  8. Top , thanks, guessing the 888 and 996 would benefit
     
  9. For bikes with two wires out of the stator then just connect the wires to any of the 3 pins on the Reg/Rec.
     
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  10. If you say I need one, I need one, ordered, thanks !
     
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