Monster Transmission & Performance Opiniões 

We are a professional custom auto shop with years of experience working on high-end vehicle builds. After ordering a transmission and a rebuilt NP208 transfer case from Monster Transmission, we experienced an ongoing series of major issues that cost us time, money, and credibility with our customer.

The problems began when we were given incorrect guidance from Monster’s technician, who advised us to go with a ¾” output shaft. After receiving the unit, we discovered it was the wrong length. We provided precise measurements and returned it, only to receive another transmission with a shaft that was over 6 inches long. We were then told by their technician to cut the shaft down ourselves.

Upon installation, the transmission leaked from the front pump seal. Additionally, the case port had stripped threads, something we had specifically requested be fixed during the return process, and it was ignored. The transfer case we had sent in for rebuild came back with a fluid leak, and our ASE-certified technician discovered a hairline crack that had been completely missed. That crack allowed transmission fluid to fill the transfer case.

Despite providing proof of torque converter purchase from another vendor, as required to qualify for a 3-year, unlimited mileage warranty, we were told the unit was only covered under a 90-day warranty. Most of that time had been consumed by Monster Transmission's own slow response times and repeated errors. Their customer service delays routinely lasted weeks, and our multiple attempts to contact our sales rep went unanswered.

To make matters worse, Monster Transmission curates their online reviews and only displays 4- and 5-star feedback on their website. That level of selective publishing is incredibly misleading and does not reflect the full scope of customer experiences.

When we finally received a response from their support team, we were offered a bench inspection only if we paid for round-trip shipping and diagnostic fees ourselves. After all the back-and-forth, lost labor hours, rework, and reputational damage to our business, we requested a modest $1,000 refund to help offset the impact. They declined.

Our experience with Monster Transmission has been one of the worst we’ve had with any supplier. If you're considering them for custom work or rebuilds, think twice. Their quality control, communication, and willingness to stand behind their product have been profoundly disappointing.

"F-150 new life recharge

Replaced my old clunky, slipping, rattling, hard shift 18 FORD 1080r transmission with a Monster tranny from B & D, Although a difficult time consuming swap, well worth the time, its now better then new, clunks and hard shifts are gone, very smooth operating.... hope it lasts longer than the factory one, which barely made 100,000 miles"

Called in to verify I ordered the right kit they were friendly and helpful

THIS PLACE IS TERRIBLE. I sent them a working 700r4. worked fine no issue but we were doing a full build so customer wanted everything rebuilt or replaced. they wanted a monster transmission instead of using our normal local guy. The transmission lost 2nd and 4th gear withing 5 miles. we sent it back 2 more times at our shipping expense just to have the same result. ultimately i took it to our normal local guy who promptly fixed it up. the front pump did not have any of the updates done. the valve body separator plate was drilled in the wrong spot allowing check balls to pass through where they should not. amongst some other items I cant remember. will never touch a monster transmission again. in fact if someone brings us a car with a monster trans in it for repairs to the transmission, we will not touch it we will insist it be replaced as we do not want to go behind their terrible work.

Top notch service,knowledge, and quality. I couldn’t be more excited. I made changes to my engine and needed a transmission that could hold up to the HP increase. Couldn’t be more pleased

Installed 4l80e 30k miles ago, changed fluid and filter after 14k miles from install, after another 16k miles started shifting strange, checked dipstick, was full but burned terrible smell, my yukon has trans temp guage and was never run over 190 degrees ever, I’m the only driver of it as well. I used dextron6 synthetic just as I was supposed to, I was assured at purchase that it was built with all updated parts. I do not believe it was built with quality parts, no way should this be bad already, the inferior GM original made it to 225k. Do not buy this junk!

Very helpful, answered questions promptly. Everything has been an A+ Thanks Madison"

"Quick service
Everything so far has been great. Service is awesome and delivery was way sooner than expected. I’ve got it installed but I’ve gotta get the computers reset before I can judge the build quality."

transmission fluid

Great experience, great Customer service. Always best to run the fluid Monster Transmission recommends for your build!"

They sent me the wrong transmission. Then took them 18 days to get me the right one. Also would not paid for my truck sitting idle and in the way for them 18 days that in sit in the way. Having to gat a lawyer involved to even try to get my core charge. I will not order anything for them ever again. They are absolutely horrible company to deal with

Guess my first review was takin down. So I have been back and forth with monster for over 4 months. After my first bad review over selling me a bad transmission from another company and not holding up to the warranty that they promise. Wanted me to go through the company they used (BD diesel) warranty process. Tazz from their warranty dept contacted me and wanted to make it right. So they had no record of the warranty claim and was going to email me a link to send in another. Never happened!! No email no more contact just ghosted! So I sent it in like the last time I tried. Through their warranty dept. that was close to a month ago. Still no contact. I guess I’ve just been took for 5000. Stay away from this company. !!

Great service and timely shipping. Great product

Knowledgeable team - it is great to work with a company where their technicians and custmer service people are experts. I bought my replacement 4L60 transmission from Monster about a month ago and it's working perfectly so far. Thanks!

they were very helpful and friendly. Informative made it easy to order my transmission fast shipping.

Paid to have a beefed up tranny for a 2004 dodge cummins. Sent core, recieved rebuilt tranny. Installed and can't get it to stop leaking. Called customer service several time to let them know that the bolt holes in the housing were over torqued and stripped. After the second call, they stopped answering. Installed helicoil to try to stop leaks to no avail. Upon further inspection, the overdrive housing is cracked in 2 places.

These transmission are junk. Bought a new "quick ship performance" trans for the 2013 Silverado 2500. Had it installed, flashed by GM, it immediately starts making weird noises, emailed them right away, been two weeks of back and forth about what it is, tech reviews on their end, only to be told the ship it back (which they will pay for), they are going to tear it apart and see what's wrong, then they will decide how to move forward. (No fault warranty LOL). Then I can pay to have another one shipped to me. This is bullshit, I paid to have a junk $4999 transmission shipped to me the first time. And now I have to pay to have another shipped to me? I could understand if it had been used. It literally has 60 miles on it.

Worst place I’ve ever done business with. Transmission was junk, customer service is junk. Do not consider them for anything!

I’d like to add that in their response they stated they shipped a transmission and I refused it. They approved the transmission they originally sent me for warranty repair which they still have as well as my core. I was never notified of a shipment and have not refused a replacement transmission. I have been out of a vehicle since the first part of October and still am. It has taken them months to respond to me and it took this site, BBB and my credit card company to finally see some action. Do your research people.

I order a torque converter from them that’s supposed to fit a 4l60e/4l65e they sent me a pre-96 4l60e converter so I tried for a week to get a call back or email so someone could help me get the right one so I just order one from circle D but when they finally get back up with me today they say it will another 3 days before tech will be back to review my claim worst company ever terrible customer service and I can’t get my money back even tho torque converter is still new in box

Highly recommend you do not use this company. There is absolutley no customer service if you have a problem. First transmission was bad out of the box and took almost 4 months to rectify the situation due to no return calls or emails. I have been in auto repair business for 37 years and this is by far the worst company I have ever dealt with.