Modern Muscle Xtreme / MMX

Reviews

Reviews are sorted by relevance, with the most helpful and insightful feedback listed first for easy reference.

  Mr Apthorp
a month ago
MMX has always been there for me... They're always busy as hell but anytime I've needed work done on my truck, they get me on a lift...

  Andrew Ornelas
3 weeks ago
These guys are super amazing. They have definitely made my dream truck come true with the intake, manifold ported I make great power out of my 5.7Looking forward to doing a supercharger with y all in the future they have great customer service always answer the phone in a timely matter always have gone Above and beyond to make sure my product got to me if something was broken they were quick to fix and get me on the road fast

  markschellhaas
a month ago
I have owned little river hot rods for almost 20 years here in Georgia and I understand supply issues but we communicate with our customers to get their projects finished in a reasonable time frame. I purchased a set of sniper valve covers within a large order of parts for a gen 3 hemi in November. One has a manufacturing defect that when they drilled out the oil fill hole they should have noticed. It can t be bolted to a cylinder head because it s bent . I called them and they waited a few days to reply. The other valve cover was already installed so I told them I would wait on a replacement. I have patiently waited until February 24 . I called and actually spoke to someone after 2 weeks of intermittent calls with no response. I was told that Edelbrock was no longer manufacturing them . They told me they would send a replacement this week. I have had zero contact since that conversation 6 days ago. Luckily it s not a customer car but my own supercharged 426 Chrysler 300 so at least I don t have missed off customer. My main question and complaint is why did I have to repeatedly call and was not informed that they had been discontinued?? How long have they been discontinued? My car has been sitting in my shop taking up shop space this entire time. I can t emphasize this enough. They really need to work on their communication and updating customers with problems. I don t want to start avoiding purchasing from them but if I never hear back I will and my business wolill let people know if the issue

  Eric Wolf
a month ago
I just got the mmx max effort V2 camshaft and tune from Matt at mmx. I loaded the start up tune and vehicle fired right up and ran great for a start up tune very pleased with there products and knowledge this is my 2nd camshaft to buy from them and will definitely keep buying from them.

  Raymond Munoz
2 months ago
I purchased a product and had a defect over a year after buying it. I sent an email and they responded immediately. They sent me a new one. Excellent customer service!

  Justin Sullivan
a year ago
Picked up a 6.4 crate engine with a cam from them. Very helpful and knowledgeable for all things hemi. Got the engine in and running, sounds great very happy with them. These are the guys to go to if you have a mopar.

  Richard Williams
2 weeks ago
They have been instrumental for my build and questions. Tony over has been responsive through emails and calls

  Alexander Averett
7 months ago
Extremely happy with this company. Ordered a cam from them November of 2022 got around to building the motor 9/2023 found out the cam was wrong called them just to verify the cam wasn t right. I was planning on paying for a new one since I waited so long but they took care of it.

  Daniel Fernandez
a year ago
First of all, these guys have very competitive pricing on every part from a simple catch can to full supercharger systems. But even better than that, they have fantastic customer service. This company stands behind their products and business 100%. I had some Mix-Ups due to the billing company that I was using, they were super patient and helpful, and helped me get everything sorted out and made sure that I had the correct parts. Then,because of that mix up, they accidentally double ship me some parts which I shipped back to them and was interested in upgrading the springs for my camshaft kit and they just gave me the upgrade for free because of my honesty. People don't do this type of service anymore. I've worked with a lot of different performance companies. I've been in this scene since I was 15 years old. I'm now 37. If you call these guys and ask them if they have a part in stock, and they tell you it's in stock, it will be in stock. Unlike lots of other companies that I won't name that I have worked with. Big name companies that apparently have gotten so big they don't feel they have to take care of their little customers anymore. I just got to say keep up the great work guys I look forward to working with you guys on whatever builds I have in the future and when I'm done with my current build I'll make sure to get you some photos to put on your website. YOUR COMPANY ROCKS!!!

  Nicolas Marquez
6 months ago
Ordered an NSR cam with a full MDS delete kit. Everything I needed came in the box. Went with am MMX RTD tuner. It can take a while to hear back sometimes but my car is done. Runs great. Has a little bit of a "baby chop" which is exactly what I wanted. I'd buy from them again.

  Dj Stewart
4 days ago
The Tomahawk loves this place. Guys are super friendly and helpful

  K Brx
a year ago
Ordered a Cam kit from MMX for my hellcat, which took quite a while but was no fault of these guys , their supplier was actually behind on their order of like 100 cams , when it was done I had it overnight...they have always been as straight up as possible with me and ready to answer whatever question I had , I appreciate that.One thing to note is their communication isn't the best ..I tried by phone ,messenger,text service.. it that took me 3 days before placing the order, I just wanted to ask if anything was in stock...when I did get someone he was quick to help though.I will continue to be a customer of theirs and definitely will reccomend them in the future.

  BossMoss 703
10 months ago
Beware of scam parts! ordered a $350 part on the website 6 months ago. I got a confirmation email. I got an order number. They charged my card. I have emailed, called, left 20 messages, texted them... this seems like a scam website.

  David
7 months ago
Coming from the LSx platform I found MMX as a Hemi parts specialist and highly recommend them for any Hemi performance needs. I ve been upgrading my wife s Jeep SRT over the past year and it s woken it up.

  Jorge Sanchez vCard
9 months ago
I just spoke with Robert, I had one simple question and instead of helping me with a 30 second answer, he decided to be rude as hell and hang up the phone on me, I totally don t apreciate the disrespect fromHis part specially after spending thousands and refering all my firendss to their company. The parts they sell are good, 0 instructions and terrible customer service.

  We Buy Gold Llc
2 years ago
I have a 2016 Dodge Ram with the 5,7 Hemi. I took my truck to MMX for a new transplant after 170000 miles. . The shop was extremely impressive with all the best up to date equipment. Byron took time and suggested the new build for my truck which gave me approx 460hp. I dropped off the truck and within on month the truck was completely finished and it could not have been any better. Great workmanship in every detail. The truck is incredible now. I cant recommend these guys enough if you have a dodge and want it done right. The truck is better then it ever was and I am extremely satisfied with the build and the price. Great work !!!

  Brian Spahn
a year ago
Ordered a NSR Cam and after finding a place to install decided that I wanted something that have me more power. Returned Cam to them it did take an update email about refund and Dave replied and money was instantly put back into PayPal. Cam ended up going with I'm extremely happy with the results. Parts ordered came nice and fast. No issues at all. I recommend them for any parts or service needed on your mopar.

  Chris Luke
8 months ago
Awsome guys, answered all of my questions and respond to emails in a timely manner. Not all performance shops are this organized (lots of emails with others do not get responded to), and thank you Tim for all the help :)

  Tom Hier
2 years ago
Awesome shop.Got car back today, they asked my goals, I told the 700hp to the wheels. They delivered 733whp and 638 lbft of Torque. They told me a month, and it was complete in a month.Haven't gone over with a fine tooth comb yet, but initial inspection looks AWESOME!Their engine assembly room is a paint booth, so It is spotless. Great idea!DO NOT HESITATE to take car here, or order parts, engines ect.

  Jenna Weatherholtz
5 years ago
Got some parts last week from these guys for my Challenger and they were very helpful, very knowledgeable,and they explained everything specifically in detail and gave me a hand with my supercharger. They really know their stuff with these cars and have a very impressive shop. I would highly recommend them to anyone needing performance parts for their vehicles. shout out to Lee and Dave.Thank you guys so much I will be a repeat customer : )

  Patty Miles
a year ago
Place order on 4/23/22. Cancel order due to not receiving product after two weeks. On 5/21was told I would get refund. It is now 6/11/22 and still no refund. Contacted lawyer and will be pressing charge for theft/fraud. Do not buy from this company!!

  Dustin Bach
2 years ago
Bought a 6.4 Hot Rod Hemi and transmission from them. Everything has been good but customer service sucks! My engine is new and paint is peeling from valve pans, no call back from them to warranty it! Does anyone even care!?!?!?

  Paul Yancey
6 years ago
The perfect salesman assured me before getting my money that I would receive my Whipple supercharger in 3 to 5 weeks. We are at week 11 no supercharger. Whipple sales manager Mike stated from order reception to finish it takes 6 to 7 weeks. We were better off ordering directly from manufacturer than a dealer that's offering what he can't deliver. Not only has it put a bad taste in my customers mouth with Whipple, It is costly to me the small business owner

  Lawrence p
a year ago
Awful place to deal with . They will gladly take your money and not send you the parts you have ordered ....Twice I have had this happen with them , very dishonest business . Dont recommend this business at all !

  Rayna Morgan
a year ago
Once again MMX delivers power and performance as promised!! #poweredbyMMX

  Emmanuel Gonzalez
a year ago
I ordered a part from them and I haven t received anything it has been like a month or longer and I emailed them and they haven t answered wouldn t recommend buying your parts from this company they will take your money.

  John Mclaughlin
a year ago
Top notch, everything from parts, to tech questions and service. And they have current state of the art machine equipment, to get your hemi done right.

  David Mcdonald
5 years ago
I have bought multiple parts from MMX for my 392 HEMI. I have no complaints regarding quality of all my parts. Also I have to say that there have been multiple occasions where Bogdan Gilewsky came through for me last minute for my car parts. He's been helpful throughout my entire build and provided me with assistance through MMX builder Byron for specific questions regarding our HEMIS. Thanks Bogdan for all your help and I look forward to working with MMX for me future HEMI builds

  Zach Neill
3 years ago
I would not recommend this business at all. If you have your heart set on dealing with them make sure you hold them accountable!!! Go elsewhere if available. #mmxbuilt all the engine problems you need added to your car at your expense. Good luck everyone.

  Chris Allen
7 years ago
Only spoke to them on phone. I live in new Jersey. I ordered a few parts which arrived within a few days. They are very helpful and know what they are talking about.