Frequently asked

About Us


Mosfet R/R universal
mounting brackets

Shindengen FH020AA
universal kit for almost
all 2 and 3 wire stator

Reverse Gearbox for
motorcycle powered
vehicles and Legend cars.

Five wire stator, excited 
rotor regulator build up
Do it yourself project

LED Voltage Monitor

and SH775
mounting dimensions

Stator Testing Example

Easy Mosfet Hookup

Vmax fuel injection
throttle body kit

Vmax CV to TBI

Vmax Microsquirt
and Megasquirt
setup Instructions

'32 Roadstercycle® 
Harley Powered

'34 Roadstercycle®
Vmax Powered

FRS/BRZ rear turbo



------YES,  I SHIP WORLD WIDE------


Guys beware of counterfeit FH020AA and FH012AA R/Rs on Ebay
I can't even count how many of the fakes people are replacing with mine
after failures of the knock offs, so be careful. If your not sure send me a picture
and I can verify them. You can not buy a real Mosfet kit for $49.95, don't get ripped off.

I only sell real OEM Shindengen FH020AA and SH847 Regulators.

Home of the Original FH012AA,  FH020AA,  and now the SH847 Upgrade Kits



New!! 600/750 GSXR LEAD LINKS

USA  Priority mail shipping $6.50,  Includes insurance.
Express Mail International $65.00  (default) Fastest
Priority Mail International $35.00 no tracking or insurance.
Canada, Express Mail International $44.00 (default) Fastest
Canada Priority Mail $25  slow, no insurance or tracking

Choose shipping method at checkout. Sorry no Russia or Ukraine shipping at this time. 
Remember No insurance or tracking with Priority Mail International.



  Hi Everyone, I try my hardest to give you a great kit but you need to measure if 3 feet of 10 gauge battery cable is long enough for your bike. 99% of the bikes it is, check your bike to make sure. Also, Super kit stator connection wire length is about 12" long,  Is that enough length for your hookup? Measure to be sure.
Order more below if needed. Do you need an adapter bracket? Measure your mounting holes and compare them to mine.  Extra sheathing is included with 10 gauge cable add on. GSXR 600 and 750 with the R/R in the front behind the radiator need 1 extra foot of battery cable if you order a Complete kit or Super kit, not the GSXR lead link. GSXR 600/750 Lead links are now available, scroll down the page.  Stator wires do not have polarity so you can hook them up in any order.  Also one other little tid bit, I have people ask me all the time that they have 2 red and 2 green wires coming out of the old R/R and what do I do? Some bikes have 2 wires because the Manufacturer needed bigger gauge wire and decided to double up the reds and blacks to carry more current.  But if you read my directions you'll find we don't use them anyway in an upgrade kit. The old power plug gets taped off and ty-wrapped safely away. No worries as everything will work just fine.  Just add my pos and neg battery cables to the battery and hook up the stator wires to mine and your done other than mounting the new R/R. Adapter brackets are available below for upgrading to any of my R/Rs. Measure your R/R mounting holes against mine as you probably won't need an adapter bracket.

       Shindengen SH847 Series R/Rs  Now available below!!!!!

       YAMAHA FJR  Custom Built Upgrade Harnesses $49.95 Email me.

Add on battery wire length for all Mosfet kits................

Add on 12 gauge stator wire for Super kit builds only....Not complete kits!
Stator wire add on


Click here for FH020AA and SH775 dimensions

Complete Mosfet Kit FH020AA DIY crimp or solder kit!

Universal  FH020AA Kit with 30 amp Circuit breaker.

 The DIY kit is a crimp or solder complete Mosfet kit with everything you need to upgrade your Sportbike or Cruiser to a Mosfet R/R. Crimping cutting, stripping, soldering, installing heat shrink is all done by you to build your own custom kit. Takes a little time but when you're done you'll have your own customized by you install. Very Cool!!  Custom wire lengths are available. Now with PVC wire sheathing!!
Dielectric grease available below!! OK, if this is your first time soldering or your not real good at it, watch my video on soldering. Use thin solder, I use .035 or .040 solder so it flows easily. Make sure your iron on a real hot setting. If you need an adapter bracket to mount the Mosfet easily they are down below, scroll down.  Mosfet dimensions are in the left side index so you can check if it is a direct bolt on replacement or not. Remember that stator leads can go any which way there is no polarity. Also, the wire I use is tin covered copper marine grade wire which solders awesome. It is not aluminum. Also take a look at my LED voltage monitors, they are awesome.


  $128.95 + $6.50 S&H USA
Regulator Option

The Super Mosfet Kit is my #1 selling kit, Fast, Easy and complete.

            The Super Mosfet Kit FH020AA
Easy, fast and complete. As close to plug and play you can get.

FH020AA with Circuit breaker setup, now with PVC wire sheathing!!  I do the crimping and soldering except your 3 stator wires. Ready to go with 3 feet of 10 gauge red/black wiring, 30 amp auto reset circuit breaker or Maxifuse, heat shrinkable butt connections and solder connectors for your choice of hookup to  your stator. Custom wire lengths available. Stator wires are 12" Dielectric grease available below!! If you need an adapter bracket to mount the Mosfet easily they are down below, scroll down.  Mosfet dimensions are in the left side index so you can check if it is a direct bolt on replacement or not. Remember that stator leads can go any which way there is no polarity. Also, the wire I use is tin covered copper marine grade wire which solders awesome. It is not aluminum. Also take a look at my LED voltage monitors, they are awesome.

 $149.95 + $6.50 S&H

Circuit protection



The Super Series Kit SH775 is no longer
available through me due to corporate greed.
Do yourself a favor and go with a SH847 as they are 50 amp and no high RPM issues to date and a much better unit.

OK, here's what's happening.  The SH775 is out and the SH847 is in. The SH847 is a better and higher output higher RPM series R/R and now it's a better priced than the SH775.   So since I won't buy into Corporate greed and pay double for the SH775. I am only going to supply Super Harnesses for you guys that source the SH775 elsewhere. The Harness is available below.  The SH847 Super kit is also available below.  Maybe in the future Polaris will bring the price back down if everyone sticks together and does not buy the SH775 for such a ridiculous price.  It's not worth the price they want at this time.    Jack

Click here for the
Easiest Mosfet Hookup suggestion!!!


SH847 series regulator picture     This is the newest R/R from Shindengen, the same people who build the FH020AA and SH775 so you know the quality is there. These are 50 amp peak models that have been tested on the Rotax motored Buell and Aprilia models and have been working great. They have been running these on the 600 Ducati with no issues.  These are scarce but I have a pretty good line on them now. They go fast.  You can get the auto reset circuit breaker or maxifuse.  Again remember that you can make these harnesses any length, check the highlighted areas above for add on wire lengths for battery and stator.  Battery wires are 36" and stator wires are 12".

    I am only selling SH847 only as a Super kit as this R/R is very expensive and I don't want any issues due to old or bad charging system wiring. I want to make sure this setup is rock solid in every way.  The dimensions of the SH847 are as follows. 1.5" thick, W 4.75" x L 4.75"  Bolt holes center to center 4.0" Bolt holes are 2" from the non-connector side end.
Remember that stator leads can go any which way there is no polarity. Also, the wire I use is tin covered copper marine grade wire which solders awesome. It is not aluminum.
    Also, if you order a SH847 I Bench test them all before they leave the shop so on the back I will have put a note on it.  The SH847 and shipping is expensive and there is no returns so I make sure everyone is solid before I send them.   Suzuki will not accept warranties from me or even their own dealers. So if you buy a SH847 from me you can be sure it's ready to go! 
Also take a look at my LED voltage monitors, they are awesome.


plus $9.50 shipping and insurance.

Circuit protection
  Super harness 30 amp circuit breaker                                                         
Super harness with 30 amp circuit breaker. 

Comes with both crimp and solder connectors for stator. 3 feet of 10 gauge red/black flexible wire and PVC flexible wire sheathing. The easy way to upgrade your stock harness. Remember that stator leads can go any which way there is no polarity. Stator wires are 12" long. Custom wire lengths available.

Custom Yamaha FJR 1200 harnesses also available. You can order the FJR Harness in the drop down list at the bottom of this window. It has 6 feet of battery cable, 50 amp circuit breaker. Does not come with the stator side because it's not needed. Most FJR riders are saying there's about a 1/2 volt increase at the battery. It does not sound like much but it is. The FJR Harness is also $49.95 plus S&H $6.50.

For FH020AA, FH012AA, SH775 and SH847.

 Dielectric grease available below!! Also, the wire I use is tin covered copper marine grade wire which solders awesome. It is not aluminum.

               Custom lengths available above in the add on section  $49.95 plus $6.50 S&H

Harness Type
Mosfet R/R and connector setFH020AA  Regulator/Rectifier with connector kit.

For the do it yourself quickie wiring hookups. If your stock harness is good and you trust it, this will do the job for a Mosfet or SH775 upgrade.  Do it once and do it right.  Dielectric grease available below!!

$118.95 plus $6.50 S&H 
R/R option
FH020AA Mosfet Regulator/Rectifier

 Mosfet  Regulator/Rectifier  only.
Straight from Shindengen these are the Best selling upgrade R/Rs on the planet. The FH020AA  is what Yamaha uses on a number of their motorcycles. The Yamaha P/N is 1D7-81960-00-00.

Do you need connectors?  If your not replacing an exsisting FH012AA SH775,  or a FH020AA you'll need connectors.

$99.95 plus $6.50 S&H

R/R option

Connector kit fits all the
FH08AA, FH012AA,  FH020AA, SH775 and the new SH847 series R/R.
These are proprietary connectors and terminals for the above regulators

Dielectric grease available below!!

$19.95 plus $3.00 S&H


Fits the Mosfet, SH775, and SH847 Gray and Black housings.
Free shipping USA 

For making your upgrade even more bullet proof. A lot of people have been requesting this so here it is. This is a 5ml tube which is plenty for anyone of my kits plus enough for many other uses. This is what the car companies put in there tail light and turn signal sockets to prevent moisture and corrosion. 


        .99 cents ea.  Free shipping of course when added with any of my kits.



Includes 3, 3 foot sections of 12 gauge yellow wire and crimp and solder connectors and heat shrink. Ships free and only available with a Mosfet kit or installed when ordering a Super kit with extension purchase. I install it for the least amount of connections.
Also, the wire I use is tin covered copper marine grade wire which solders awesome. It is not aluminum.
Mosfet Kit Add On Only $9.00



Finally back in stock !!!!

YES, these monitors are completely water proof, the little square box I put them in is not sealed but all the electronics are sealed great. Comes in white case leave it or paint it.

This is a  HOT item!!! This should be stock from the factory on all motorcycles. .  My new units have been re programmed for either Shorai or stock battery use.  It has the over voltage warning now at 15 volts to warn guard against killing a Shorai battery or boiling a stock battery, best of both worlds in one unit. White case only. I put the LED in the square case myself for ease of mounting, if you want them separate so you can drill a hole and mount it I can do that too just let me know as I glue them in normally. You have to tell me or it will come glued together.


        $23.95 + 3.00 S&H USA

LED monitor

Buell 3 phase Stator.      This is a HOT item !!!!

This is the new CE-6014 three phase stator for the Harley powered Buell's. Use as a replacement or upgrade to a 3 phase system using a FH020AA Mosfet R/R. This will not fit the 1125CR, sorry I wish had one for you.

$99.95 plus $6.50 S&H


1/2" PVC Sheathing

Sheathing  now comes stock with all my kits, except the series kit  and now I'm making it available for your custom applications too. This is something we all need for our bikes from time to time but it's just not easy to find at a moments notice, and of course if your like me I needed it yesterday. So here it is 1/2" ID. which I find is perfect middle of the road wire covering. Sold by the foot and shipped free its in stock and ready to go. US sales only. Jack
$2.00 a foot with free shipping. 3 Feet  minimum order.

PVC lengths

Crimp and Go kitCrimp & Go Kit $128.95

The newest kit from Jack is the Strip, Crimp & Go. I am not an advocate of using your old harness to upgrade to a Mosfet regulator  but some people need this and who I am to say no. If your harness is on a new bike, or is in tip- top condition then this kit will work great for you. You just cut off your old stator and battery connectors and strip the wires and install the heat shrinkable connectors on your stock wiring making sure you have good solid crimps. There is no directions in the kit. You just strip, crimp and go.  This kit is fast and easy but you have to do it right. 12" wires on both. Remember that stator leads can go any which way there is no polarity. Also, the wire I use is tin covered copper marine grade wire which solders awesome. It is not aluminum.
You can not order extra wire length for the Crimp and go kit.  
Also take a look at my LED voltage monitors, they are awesome.  FH020AA Mosfet only with this setup.

$128.95 + $6.50 S/H


Ok everyone it's been coming for awhile now and we are finally getting ready to get these moving. I tried unsuccessfully for months to find a company in the USA to build these from my design with no luck. So we are finally tooling up to do them oursevles. I am in the process of building up some prototypes and will be selling these to people who want to be test pilots for them. The boxes will be dual 21 tooth sprockets standard and ratios will be changed at your front sprocket or rear wheel gear. The input sprocket will be always 21 or custom bigger and the output can also go bigger. These will be custom order and will have a few week lead time as they will have to be sent out for broaching which I have no time control over. So if you are interested in one of these new units email me to be put on the list. Also the outside sprocket is movable, closer to the  input gear or further out for  wide tire applications. The unit body is about 6" square and about 12" total from end to end.  There will be a couple shifter options for matching your design and mounting configuration needs.  We should be shipping in June.  Any questions just send me an Email.

You tube Video here:

Shaft in shaft reverse gearbox
This is a Fleming Engineering custom design and is in the patent process so please don't think copying our design for resale, it's not in your best interest.



I am now offering a universal mounting bracket for the ShindengenFH010AA, FH012AA,  FH020AA and SH775 regulators.  Also the SH847 bracket is now available.  Comes with bracket and stainless mounting hardware. The bolts I enclose are metric #6 x 1.00 mm counter sunk. These fit most metric bikes. If these are not your size you will have to provide them. I also provide 1/4" threaded mounting bolts and washers for the Mosfet mounting. I personally build each one in my shop on my milling machine  in the USA. These are made with 1/4" aluminum flat bar. You can trim if needed for ultimate weight reduction. The 2 way is 1.5" x 4.00. slotted hole spacing can accept from 1.875" to 3.40" center to center of bolt, spacing. Now also the new Super adapter plate with center hole will let 2006 and 2007 GSXR 600 and 750 owners be able to mount there Mosfet or even a stock R/R around the corner instead of behind the radiator.  It comes with spacer and hardened bolt and locking nut to move the R/R to a better and cooler airflow area. 

Below is the new 06-07 GSXR  600-750  Bracket and hardware. This bracket is new and is experimental so use at your own risk.  I designed this as a simple easy install, the hardened through bolt is better than grade 8. Use removable blue lock tight to install.  If you want to be a test Pilot for me let me know.  I don't have a GSXR so I built it the best and lightest possible for street and racing.  You can mount it 360 degrees if needed.

Gixxer Super bracketMosfet sidewaysMosfet up
GSXR side mount
This is the new GSXR side mount bracket (above)  install on 06/07 600 or 750. Out from behind the radiator out into the air.  The bracket will work with either the 06/07 GSXR lead link found below or any of the Super kits or Complete kits.

Stock mounting         
$19.95 plus $3.00 S&H

GSXR side mount      $23.95  plus $3.00 S&H     

SH847 mounting       $21.95  plus  $3.00 S&H      

If you buy a kit and a bracket you will not be charged shipping for the bracket.

Super Bracket

Wiring help is here.  and  videos here on

   Triumph T2500676 Harness
 and FH020AA Package

This is a T2500676 adapter harness for a direct plug and play for the Triumph Triple. It may fit other Triumphs a.but you'll have to check your connector ends and see. An avid Triumph owner told me it is the same connector found on a lot of other Triumphs. Also has been working on numerous Ducati motorcycles also. Check the forums .The picture of the ends should be a good indication of what it will fit.

$114.95 plus $6.50 S&H USA

R/R option


         $128.95  + S&H =$6.50 USA

This is the new HYOSUNG leadlink package with a 

  FH020AA or SH775 Shindengen R/R INCLUDED !! 

     From what I understand this harness will work on about all Hyosung models, but of course you need to match you bikes connectors to my photo to be sure. Be sure before you order.  These harnesses I  build up so the price is a little higher than the Triumph lead link which comes to me assembled. Choose below either the FH020AA which is working on all the Hyosung bikes we have put it on.  If you want to try a SH775 which is still in the experimental stages you can order it but make sure someone has tried it on your make and model, there is no returns on these as they are experimental still.   If your not sure then order the FH020AA it has a great track record and I have them all over the world on a lot of Hyosung models.  The leads are 12" long.   Jack





Choose R/R

GSXR lead link
       2006-2007 GSXR 600/750 Lead link

   This is a custom made by me to help the GSXR 600 and 750 guys easily run a Mosfet or SH775 R/R.  It may fit other Suzuki models and only time and feedback to me will make the list grow. Also available is my adapter plate for moving the R/R around the side away from the hot exhaust.  The leads are about 12" long so side mounting with my bracket is a breeze.  You do not need to order an extra foot of red/black battery cable for a lead link.  $128.95
    FH020AA Mosfet INCLUDED

GSXR 600/750 connectors       Check and match your connectors to the picture on the left. The square hole in the connector is the positive side 2 terminals.  If you have another model Suzuki this may work for you but you have to check and make sure. The black connector is the same as the white connector in the other picture above.

Choose R/R


I have needed one of these many many times and I've used sticks, cardboard, a piece of aluminum, a beer can, a pop can, the list goes on and on. Well I finally found these and bought a bunch to be able to send them in kits to everyone cheap.
As Henry Ford once said, "Any color you want as long as it is black". So if you need one of these for those dirt parking lots, a soft asphalt lot on a hot day or even a cheap gift for a fellow biker here they are. They are injection molded and very solid, built here in the USA . Just add to cart and I will ship it with your kit. If you want a few e-mail me and I will work something out for you. I can ship up to 3 in a one kit. to make life easier. 

$3.99 ea. with kit purchase. 



Yamaha, Kawasaki, Suzuki, Triumph, Honda, Ducati, SV650, Aprilla, Ducati and many more!
Finally fix your single phase 2 wire and three phase 3 wire charging system problems with a new Mosfet voltage regulator upgrade kit!
Even if you buy a Mosfet somewhere else I will help you out with tech support.  
Click here for the
Easiest Mosfet Hookup suggestion!!!
Click here for stator testing page.......
Click here for FH012AA dimensions

All drawings and prints of the Roadstercycles have been copyrighted by Fleming Engineering

The proprietary steering and rear drive is property of Fleming Engineering
With over 14 years invested in the design, we will not take imitations lightly and we will prosecute .

Shindengen is a trademark or copyright of Shindengen America and or other countries.

ROADSTERCYCLE® is a registered trademark owned by Jack Fleming
V-Twin Roadstercycle, V-Four Roadstercycle,  '32 Roadstercycle,  '33 Roadstercycle  
'34 Roadstercycle, are Trademarks of Fleming Engineering/ Jack Fleming

*Harley Davidson and Twin Cam are trademarks of Harley Davidson *
Yamaha V-max is a Trademark of Yamaha Motor Company
Megasquirt is a trademark of Bowling and Grippo

All pictures of the Mosfet and other regulators with applied red and green dots or red and green stripes are Trademarks and Copyright of Jack Fleming / Fleming Engineering and these distinguishing marks are Trademarks applied by Jack Fleming to help customers and to separate other competing and copying websites from pretending to be    4/28/16

Copyright 2007, 2008, 2009, 2010, 2011, 2012,2013, 2014, 2015, 2016  JackFleming/