Monster Transmission & Performance Reviews 

I would rate a minus 1 since there rip offs and do not give you the $500.00 core return!!! It's been months!!! 40 calls to them!!! Company is not reliabe!!!!

David is great with his customers very knowledgeable only will sell you what you need. Doesn't try to sell you something you don't need. All around great experience. I will only be dealing with him in the future.

I got the black beast, 750 hp and 1000 ft lbs. 90 day warranty. It made 500 of the easiest miles and reverse went out. No help from monster, waste of 4000 thousand dollars. Yes it was 8 months old. 90 day warranty means it won't last. Truck was never in the mud or hooked to a trailer. It couldn't handle running the dogs. Junk!

I would like to gave Dorothy Montiny five stars due to the fact she help me a lot. Unfortunatelly the Monster’s checkout page did not work well and she spent a lot of time and did her best efforts trying to find a solution. She is a very professional, nice and kind sales representative!, Thanks Dorothy !!!

I was inquiring on how to get my core charge money refunded to me. I called Monster and got in touch with Susan.. She sent me the form to fill out and called back the next morning to confirm she was mailing me a check for my core. She was very knowledgeable and helpful!

Fantastic customer service! Scott was very helpful and knowledgeable helping me with the rebuild of my turbo 350 transmission. This is the third transmission I have purchased from Monster Transmission for different hot Rod projects. Definitely a quality company with quality staff members.

Scam alert!! Don't buy from these guys, I canceled a transmission order within an hour of ordering because I realized the transmission I ordered wasn't going to be strong enough. Now they won't refund me my money or return my calls or answer the phone .

Our sales rep Dorothy Montini was fabulous! Very informative and helpful. Would highly recommend her. We are very pleased with the transmission we purchased& the service was excellent

The first 48re they sent me burned up within 2k miles. The replacement never made it out of the driveway. Started a claim took it to transmission shop and paid to have it diagnosed sent paperwork to monster and Covid hit. I never heard from them again. They claim a shipment email was sent to me. Ended up buying a new truck so just put that one on the back burner. Thought of it a few months ago and after several emails finally got a response. Basically telling me to kick rocks. They will not provide me with a copy of the email that was sent to me. Stay away from them! You would be better off buying a transmission off of Facebook market place and rolling the dice.

Scam alert. Purchased a transmission for $3700, canceled the order within 24 hours and they didn't want to refund me at all. After calling everyday they eventually refunded $2700 and kept $1000 of my money saying it was a restocking fee. So it cost me $1000 just to call them and cancel a day later. Horrible, horrible business.

Help with choosing the right transmission for was a great and comfortable experience.I’m confident that this tranny will work just as great.Thanks again!

DO NOT BUY ANYTHING FROM THIS COMPANY!!!!

Review ALL of the GOOGLE Reviews!

And review ALL BBB Reviews BEFORE you speak with them!!

DO NOT BUY ANYTHING FROM THIS COMPANY!

I’m currently fighting for a full refund and I cancelled my order#558993 within 24 hours. I’ve left numerous messages, sent numerous chats and emails. RUN!!! These people are scammers and stealing hard earned money from EVERYONE they come in contact with.

DO NOT BUY ANYTHING FROM THIS COMPANY!! Look up the address, this isn’t a business. I wish I had done more research beforehand. Do yourself a favor and steer clear of these thieves!

There customer service is horrible
I purchased a turbo 400
And had some issues
You can not get a person on the phone and after waiting for hours they treat you horrible

I received the trans covered with trans oil
The pan gasket was cork and leaked
The shifter rod was rusted and the seal was not installed

I submitted a warranty form with no response

Do not buy from them

Ordered a 48re trans. Scott Tucker was very friendly and informative. I hope the trans is as good as the customer service. Thank you Scott for the service you provided. Greg Skoofalos

I placed a order with Scott today. Very pleasant and helpful. Can't wait for my 4r100 trans to show up. Thanks Scott, and monster.

I recently bought a lockout kit for a 700r transmission. My customer service rep. John Blair was very helpful in getting me what I needed.

I’ve purchased a 4L65E on 10/10/22. First off they send me a 4L60E, which I ask for the 4L65E. Secondly, when I had a licensed GM technician install it me and come to find out that the transmission would not go into any gear. After diagnosing the issue, the technician discover the transmission had a bad oil pump. Try to talk to several of Monster’s representatives and they will not work work me to resolve the issue. They were telling me that I would have to pay out my pocket for their warranty. The GM technician had an estimate of $1200 to repair it. After battling with monster, I was left with no choice but to dispute the transaction with my bank. After 7 months of investigation with the bank, I won the settlement in end February of 2023. Now to this date 5/3/23, monster is now is harassing me with collection agencies twice, and both agencies have drop their case against me after hear my story and providing them with evidence.

Straight to point.. can't wait to see how there transmission are

Sold me a transmission that lasted 800 miles.they will not talk to you only email back and forth.really sorry product and customer service

No support, parts don't fit together. Ordered a tyranny, torque converter combo and the torque converter doesn't fit. Good luck talking to someone or if you do getting a answer or call back. All I can say is run away. Not worth the hassle and no one there knows what they are talking about.