Ultimaterectifier Reviews 41

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!

After endless voltage regulator soul searching on a 1995 BMW F650, I finally opted for an UR model. Pricier but well worth the expense: the rectifier remains barely warm, so do cables, and the tension remains remarquably stable at 14.5V whether idling or in high RMPs. Recommended !

I fit Ultimate Rectifier regulators to all my motorbikes and they always work great, they're the best!

On this occasion, there was a problem with the last unit I ordered, I contacted them and in less than 24 hours the problem had been satisfactorily resolved.

They make very good products and have very good pre- and post-sales support and customer service.

Looked for an upgrade to the regulator rectifier for KTM 990R, found Ultimate Rectifier online and contacted them as I was looking for a solution on a rally bikes build.
Merel and the tech guys at UR were really helpful.
I was supplied with a rectifier that I could use with different battery types including lithium which I was looking to use on this build.
The rectifier is now installed and operating well maintaining the correct voltage.
Highly recommend

I was looking for a good replacement reg rec for my bmw f800s 2010 so I came across the ultimaterectifier website. wasn't quite clear what type to choose from so I started with a basic one.... after a fast shippment I started installing the item and tested it but my lightbeam did some weerd. I took contact with the helpdesk and they quickly helped me out solving my problem ! Now I have a good and reliable electrical source so I can enjoy for many years ! thanks Team !

These people have incredible patience. I grilled them for four days with constant questions, and their responses weren't just great—they were exceptionally polite. They helped me through the whole decision-making process. I’m looking forward to receiving my order, but as someone in the same field (heating and ventilation), I know I wasn't an easy client. They stuck with me until the very end. Mad respect!
To be continued once I receive the relay :)

Great customer service, and communication is clear, helping me to decide options available to me.
Ordering and shipping to UK was fairly quick.

Quality rectifiers and wiring SKU: UR-SR-121-230 for my 98 Honda VFR800FI to replace my failed unit, providing a stable voltage though idle to high rpm as indicated by my voltage meter that was connected.

Would highly recommend!

Merel and the team at Ultimaterectifier were excellent from the very start to the very end. They got back to me quickly with my initial enquiry and I could tell that they really knew their stuff (which filled me with confidence). A couple more questions were answered quickly and then my order was placed. It arrived swiftly, I fitted it and it cured an ongoing problem where previous inferior products had failed. Merel and the team are genuine and professional. It was so refreshing to experience the human touch for a change. I would thoroughly recommend them. Great work!

Service at this company is just magic
The product vs price is good

Have bought them for both my motorcycles

Recommended 👍👍👍👍

Very good customer service answer came within a day of writing they helped a lot with my numerous questions.
I ended up ordering a different one than what they recommended a ur 104 for a Honda vfr 800 2001 for my KTM 640 2004 so I could make my own cables.
The rectifier looks good I can't test it so far as the bike is in storage but the delivery was fast it came in 3 days and the plugs fit very well was easy to install and didn't hit the negative battery post like the original did.
Very nice people at customer support when i asked if they sell extra crimps in case they break they offered to send new ones I will make sure to recommend them to friends.

Well, what can I say. Brilliant customer service.
Original product arrived in good time and was simple and easy to fit, (BMW F800 st). After a few months I had a failure and the Rudy and team quickly replaced the unit. However there was a slight issue with the plug on this unit (I would suggest this to be a supplier issue rather than UR) and although it was difficult to show/explain the unit was replaced in good faith.
So the number of units they probably sell it’s reasonable to think a percentage won’t be perfect as any company selling a product but it’s how a company deals with these issues is what I value and I think they have done a great job. I will say, I used the WhatsApp option as method of contact and they have always responded, even when I simply sent a video demonstrating my issue and they still responded to show a little gratitude as now they know they can rectify issues or as a company deal with it. So I have to say I’m happy I chose UR.
Thanks you.

Website and ordering was fine, product not so much.

Having a 1994 VFR750, new to me, which is known for charging issues I decided to do a preventative upgrade to the 'Ultimate'.
6 months and max of 2,000km later it dies leaving me at the side of the road with a huge recovery bill.
Putting the old un-branded one back on when I got home of course restored normal operation.

Emails asking about the '3 year warranty' go unanswered so it seems like the warranty isn't worth the pixels its written on.

Update- They got back to me with a return label. I had been responding to receipt emails which turned out to be a no-reply.

I ordered a custom wire length rectifier to fit my Ducati 1098s.

Rudy and the Ultimaterectifier Team are very professional and a pleasure to work with.

The new unit is doing an outstanding job putting out 14.55v at 1200rpm and unlike the OEM unit runs completely cool to the touch.

I placed an order for a Vfr 750 rectifier on the 18/08/25 it’s supposed to take 5 to nine days,the order says complete on their website no shipping date,I have tried ringing and the number doesn’t exist. They are a big con don’t bother it’s a big scam !

Perfect! Needed a new rectifier/regulator for my 2003 Aprilia Caponord. UR's plug and play model fitted perfectly and gives a steady 14,5 volt at idling rpm. High quality looks and feels, very happy

Perfect customer service. Very helpfull in finding the right model for my bike. Well finished product that seems to work perfectly. Nice experience buying from someone who puts quality first.

I Purchased an ultimate rectifier for my 2008 Daytona 675 in December 24, fitted it and started using my bike in March 25, this month august 25, I had some troubles with the charging system with my bike. I emailed ultimate rectifier not sure if it was related to that, Rudy Coppens of customer services was super fast to reply with information and I soon realised it wasn’t the rectifier that was the problem and the bike is now fixed. I would definitely buy from this company again and would recommend it to friends. Customer service is top notch and you don’t see this often now. Thanks again.

I have yet to test the rectifier and will comment about after some extensive riding. But I can already say the customer service is awsome.
Shipment of the first order was quick, unfortunately the mail service in Austria lost the package, I made a second order and informed the customer service - they immediately replied very kindly - filed their own inquiry - and shipped the second order out instantly.
Thank you, Rudy!