Monster Transmission & Performance Avis 

"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.

Transmission came in good same, perfect match to what I had, swapped everything over threw it In and it drove great. Crisp shifts. One of the oil containers had a hole in it from shipping but not that much spilt out. Came with seal to trans cooler lines.

Great experience
I called at 4pm on Saturday and got a human. John was great was able to place an order ford a street monster 10r80. It shipped on monday arrived on Thurday install on friday everything went so smooth. Now have about 35 test miles on new transmission everything good. Call at 4 on friday to return core. Again customer service was great. Pick up scheduled for next Wednesday. This far super happy."

Excellent job. Very fast and friendly service

This is a terrible company, with terrible customer service, its been over 2 months and I cannot get a call back about my order, I have left over 5 voice mails with no answer, for all of you in the same boat as me, instead of dialing 2 for service, hit 1 for sales and go off on that guy, thats what i did and I got a call back today, the gave me another line of crap and said it was gonna be at least another month before I get my money back from them sending me the wrong transmission for the vin I provided, please do yourself a favor and pay double for another company before you stoop this low, they just stole $3,000 from me and im gonna have to hire a lawyer to get it back, I ordered a jasper transmisison and it took 3 days to get here and the truck is gone, im still waiting months later for my money back on this hunk of junk they sent me that never even got filled with fluid because it had the wrong output shaft in it.

Good warranty and customer service

The customer service was fantastic and extremely helpful and fast .The shipping was great not only cheaper then i expected especially considering where I live but fast as well.I will definitely buy from them again. Thank you guys !

Shout to John Blair! Had trouble ordering online and a quick phone call to John had my Street Monster 66rfe on the way! Merry Christmas to me! Throw some merch in my order and I’ll be happier than Ralphie with his Red Ryder

purchased new, never liked the shifting, 95k miles, overheated on the highway had to get towed home. added thermal bypass, had fluid flushed at dealer. truck was shifting hard and sloppy with lots of torque converter shudder on the way home. did not drive it afterwards. took a chance it was just the torque converter and purchased stock 1600rpm, went for a drive today and it was so smooth and shifted so well, temps are in the 160's. thank you Monster for the advice on the phone and having the parts I needed available and on sale. I am very happy all around.

"easy ordering

ordering process was easy. shipping was quick."

Ordered and received the transmission within a week. Installation by my shop went smoothly, but had to work out the tune after a couple of days of driving. All good now. Scheduling the core return was also easy. Great price and included the fluid."