Monster Transmission & Performance Arvostelua 

I bought a new transmission from them it failed within the 1st 6 months less then 10,000 miles After months of being put through hell! they warranty it 2 months later i received a replacement which was left out in a parking lot by their driver, That Transmission lasted 5 miles!
having to hire a lawyer because of no response. STAY AWAY FROM THIS COMPANY NOTHING ON THERE SITE IS TURE

Great experience! Great product! Highly recommend. Ask for T-Mac.

"High quality build
Recommend to purchase great service top notch"

We ordered this transmission and it arrived quicky. Very happy with the shipping speed and customer service support."

Not had success calling them directly as their management won't return calls so I google searched and finally got through to the real owner of Monster transmission which is based out of south florida. They are called Hidden harbor capital partners in Boca Raton. After speaking to someone at their main office I finally got a resolution and wanted to share this experience as I'm sure others are having the same problem from what I read online.

Very good transmission. Lived up to my expectations!!

Customer service was great and shipping was fast and professionally packaged! Transmission was built to the highest quality standard!

These transmission are built to handle what you throw at them.

"6L80E
It was a pretty straight forward transaction. Frankie was great and helpful with all questions I had. Trans arrived very quickly and the process of replacing it was just a fast from my local shop. So far everything Works like a charm. Thank you Monster Trans"

Well, the first transmission from monster lasted weeks. Lost fourth gear. The replacement lasted 8 months. Same problem... Lost fourth gear. Had to pay shipping for the first replacement. They wanted me to pay $600 shipping AGAIN! No friggin chance. I'm taking my business elsewhere. DON'T WASTE YOUR MONEY WITH MONSTER TRANSMISSION!!!

Incredible Company and Product

This thing is a beast. I have an old truck that needed a transmission. The Monster team was super helpful in getting the information I needed and they got here to me quickly. The transmission was clean and had been painted. Built extremely well and works more than perfect. Thank you Monster for a great products and service!"

"Great quality unit!
Overall I'm very happy with everything. The help line was very helpful and knowledgeable with technical questions."

"Transmission

Bought one of there transmissions was not sure at first but im really happy I did this thing has been amazing shifts so smooth if you are on the fence about buying one of monster transmission you should definitely do it i highly recommend it super fast shipping and return"

Was charged a core deposit fee without any notes on “we won’t take back this model of transmission back because having your old transmission shipped back is more expensive”….kind of messed up because I waited over 3 months for them to find a core for a 97 4l60e so clearly it’s not like they’re just laying around for $10 at a yard sale. Either don’t charge the core fee, if the type of model is not cost efficient to ship back, or be honest and charge a $300 shipping fee and NOT promise a “quick and simple core return”.

6l80e

Staff very helpful, arrived within a week. Would recommend again but hope I don’t have to buy a new transmission!"

"Great product
Customer service was good. Frankie answered all my questions and got me everything I needed. Transmission works well and I am very happy with it."

Replacement
Thankfully it was it in stock. Shipped right away. It was installed within a week of ordering. Improved shifts"

Great price
I called everyone here local to me to get a price on a rebuild and even some transmissions shops that my company has a commercial account with and everyone quote me 4k and above. I saw the monster transmission one and decided to buy it so far it has been great and the salesperson that help me with extremely patient with and answered all my questions. Just buy from monster transmission there’s no need to go to local transmission shops that are going to overcharge and only offer a 1 year warranty

"2016 gmc sierra 1500
Got this single clutch billet torque converter as a replacement for the stock one. The new one works fantastic and my truck runs smoothly now shifts great and no shudder. Also added a cooler bypass and now no more overheating

The worst company I’ve dealt with.

This was going to be my second transmission from Monster. The first unit constantly leaked fluid, and warranty calls were never returned. Despite that experience, I gave them another chance after hearing about their “new direction.” That was a mistake.

At purchase, I was quoted a 4–6 week lead time. At 7.5 weeks, they still hadn’t even started building my transmission. After I pushed for answers, they apologized and promised it would ship in two more weeks. That deadline came and went—then I was informed they had canceled my order entirely and did not even have my transmission, despite previously claiming it was being built.

To make matters worse, they said they would hold my money for another 2–3 weeks before issuing a refund. So now I have no transmission and no money.

I’ve already contacted my bank to initiate a chargeback and will be reporting this company. No customer should have to deal with this level of mismanagement and dishonesty. The best part? Everything is documented in writing.

What a mess. Stay far away from these jokers.