Ultimaterectifier Recensioni 

I have recently bought a Series MOSFET regulator rectifier from Ultimate Rectifier for my Kawasaki KLE 500 (2003 model). As the website only offers a standard shunt type rectifier for KLE 500 I contacted Ultimate Rectifier team via email and asked if they would be able to modify the connectors from any other Series MOSFET type rectifiers they offer for other bikes. Rudy and Merel replied fast and we're extremely helpful and patient with my questions. They suggested which series MOSFET I should take and they modified the connectors so the rectifier was basically plug&play. The regulator rectifier works great, it's charging properly and is not overheating (I ride in hot weather up to 36'C). I've done a few longer journeys so far and over 1000km since I bought and installed it - no issues whatsoever. I'm sure the regulator rectifier will continue work and in case of any issues, I am sure the team will be equally helpful as they were when I was reaching out via email. 10/10 thank you guys!

READ THIS REVIEW: If you're like me, you usually read just the negative reviews. But when it comes to professionalism, knowledge about older bikes (mine is a 1991 Honda), and quality products, it's hard to find a company that does it any better. As someone who never writes reviews, I felt it was necessary to say something about the exceptional customer service I received from UR.

I purchased a MOSFET voltage regulator (UR-R-121) and I'm extremely satisfied, not only with the quality of the product but especially with the customer support. A special thanks goes to Rudy, who was always helpful, knowledgeable, and exceptionally courteous. He handled my case with great professionalism, answered all of my questions, and even sent me a regulator with a voltage setting better suited to my needs without hesitation. It's rare to find such attentive and customer-oriented after-sales service. I highly recommend this company for its professionalism, expertise, and genuine commitment to customer satisfaction.

I bought an alternator regulator from
Ultimate Rectifier a few weeks ago.

It was used at the Pannoniaring from June 21st to 23rd with excellent results.
Everything's great!
Thanks Ultimate
Rectifier Team!

The experience was really good. I had a few questions, and Merel was very professional and kind, taking the time to explain everything. Top service! I'm very happy with my first order and would highly recommend it.
Thank you, Merel, for everything.

J’ai commandé un redresseur de tension sur une Honda africa twin 750 de 1992 , rd04 le service client est super , très bonne expérience. Je recommande

Ich habe einen Gleichrichter für eine Ducati Monster S4R gesucht. Auf meine Anfrage wurde mir super geholfen. Die Beratung war sehr gut und der empfohlene Gleichrichter wurde von mir Freitags bestellt und kam am folgenden Montag an. Besser geht's nicht. Der Regler ist Plug&Play, das Kabel hat eine gute Länge, so das man ihn sogar ander platzieren könnte. Top Verarbeitung. Danke für die nette und gute Beratung.

I’ve bought an UR110 rectifier in august 2024.
Beginning of may 2026, it fryed. Stator ok.
I’m the owner of a 1990 VFR 750.
I contacted ultimate rectifier.
They quickly answered and indicated me how to test to send back a video. I made the choice to send the rectifier directly. The engeneer tested it like out of order.
They shipped a new one faster than time for them to write it to me !
Excellent reactivity and communication. I wanted more informations on what happened. The engeneer took time To search and find that it is a frequent issue on the VFR (rectifier screwed on the frame) and proposed me a link to get idea to find a new place for rectifier, giving me some advise.
Commercial et technical teams available.
Excellent after-sales service.

Erg goed geholpen door Rudy. De regelaar geeft een mooie constante laadspanning onder alle belastingen. Niet eerder gezien met andere merken. Onder hete omstandigheden (buiten 35 graden + langzaam rijden) schakelt de regelaar af om schade te voorkomen. Na afkoelen, begint deze gewoon weer te laden.

Top product

I ordered a mosfet regulator rectifier from Ultimate Rectifier to replace a standard unit on my 1998 Ducati 748.

There’s a three year guarantee which is good for a component like this.

Delivery was as stated.

When it arrived it really is a beautiful looking bit of kit. I also had some questions as electrics are not my strong suit. Rudy answered my questions and I was able to fit the unit.

All really reassuring.

All good now and I know I made the right choice.

Very happy.

Top producten en zeer snelle levering!
Absoluut een aanrader.

Producten zijn ook van hoge kwaliteit en je krijgt er soms zelfs een leuk setje speelkaarten bij van hun eigen merk.

Rudy is ook echt een topper!

Only good experiences with UR.
They have fantastic customer support.
Thank you for good, and fast service.
I already have mounted an older version of UR Rectifier on my Honda CBF 1000, and it have served me great, but I always want the best, so I have ordered the newest version rectifier, the: "Series-Mosfet".
This type rectifier allows the rectifier and the stator to run cooler, and protects against burned stator.
Burned stator, is a well known problem on the first generation Honda CBF 1000.
Keep on the good work.......

Zeer goede service! Ik heb een regelaar besteld voor een CBR600RR, en deze is na een week kapot gegaan door de hitte van de originele bevestiging. Ze hebben mij kosteloos een nieuwe unit gestuurd en wat tips gegeven voor een andere bevestiging om het probleem te voorkomen. Enorme aanrader!

Perfecte spanningsregelaar motor loopt zelfs mooier door de mooie gelijke spanning dit heeft namelijk invloed op je ecu en vonk

One of the best company I foud related to after-sales service. Very quick and effective response every time I needed via WhatsApp. I had some problems with the rectifier and they sent me a new unit without any cost after sharing some information. They also give different recomendations for my specific model and problem. And, about the product, I decided to ask for it because of the good reviews I found on the Internet. Highly recomended.

Very fast & kind customer service from Merel. They helped me a lot with the rectifier. Thank you

Received a defective unit and ultimately died after 8 months of bad work. Every time I passed over a bump the H4 headlamp would die, I even complained about the Osram lamps. Did some electrical troubleshooting and after some weeks got to the defective rectifier. I was testing it and since I'm a mechanic (not bikes), I had a person with a fire extinguisher next to me. The bike didn't catch fire when I plugged the rectifier because I was already prepared. Didn't use the extinguisher despite lots of smoke coming out! They said they would replace it. I lost trust in the brand. Keep electrical to OEM!
Feedback after UR reply: I do want to emphasise again that a replacement for a new unit was readily at my disposal. I just didn't want one. I was, anyhow, reimbursed of 1/3 of the price. I wouldn't install a unit even of a different brand. Bought OEM.
PM sent.

I recently purchased a voltage regulator from Ultimate Rectifier, and I couldn’t be happier with the experience.
First of all, the build quality of the product is outstanding—it’s clearly a major upgrade over the OEM parts. The shipping was incredibly fast, arriving much sooner than I expected, which was crucial to get my bike back on the road.
What really sets them apart, though, is their professionalism and technical expertise. They provided excellent support, helping me navigate the specific wiring requirements for my Honda with clear and competent advice. It’s rare to find a company that combines such high-quality engineering with genuine customer care.
I highly recommend Ultimate Rectifier to anyone looking for a reliable, high-performance charging solution. Five stars!

Ich habe im Juli 2025 einen Laderegler bestellt. Leider wies dieser einen Defekt nach 6 Monaten auf. Bisher habe ich von Freunden die auch die Gsxr fahren nur positives von UR gehört. Also habe ich auf WhatsApp um Hilfe gebeten und ich wurde sehr schnell auf mögliche Fehlerquellen hingewiesen. Am selben Tag noch bekam ich einen neuen Regler zugeschickt. Ein sehr Guter und netter Kundenservice!
Besonderen Dank gilt Rudy🤝