Tier One Transmissions LLC, Phoenix AZ

Brandon and his team at TIER 1 are fantastic! They are professionals who are always willing to offer advice and recommendations. They take their time to explain what work is needed and are honest with the costs. It’s a rare opportunity to work with such honesty!

Bery happy so far! Everyone was very knowledgeable! Always got back to me fast! And did the in a timely fashion as well!

After lots of shopping I had tier 1 put the 750hp 68rfe in my 2015 ram 2500. I’ve had some family go with other brands and have issues pretty fast. Today I stopped in to have the first service done after the break in and this transmission is a dream! The shifts are so smooth which was not anticipated knowing it had the upgraded valve body but it’s so gentle. It tows well, drives through town smooth, and kicks down and takes off just like you’d want it to. I’m well convinced I’ve made the right choice at tier 1 with a big investment. On top of the performance I can’t skip the customer service. Both of the guys who have helped me at tier 1 have been beyond helpful and answer my stupid questions.

Matt and his team went over and beyond on my stage 2 transmission in my Ram with same week turnaround service

Thanks for all your help and assistance. Great experience. I’ll let you know after I get it in and running.

These guys got my truck dumped on them by another shop because they couldn't figure out the issue. Tier One went above and beyond to figure out my problem and within a strained timeline in order for us to make our weekend trip possible. Top notch shop and staff.

I have a 48 from tier one that is a stage 3, it shifts flawlessly and has not missed a beat in over 35k miles!

Brought my truck in to tier 1 and couldn’t be happier! Everyone working there was beyond helpful. They had my truck in and out within a day kept me updated throughout the whole process. Hats off to this shop I will not hesitate to come back in the future!

Price was a grand cheaper than ats and they rate their transmission for more power. They answered all my questions about switching from pto to non pto transmission in a Ford super duty. Glad to send buisness to someone in state.

I dropped my 2010 ram 2500 off, and I got it back in a week with no issues. Great service.

Best experience I've ever had with a repair and performance facility. They were extremely easy to work with, over communicated everything (which is awesome), honest and gave me options to work with after diagnosing my truck. I ended up getting a built transmission, installed by Tier One and couldn't be happier. Tanner and Brandon were amazing to work with and I was left feeling good about my choice in Tier One.

Such a smooth process to get my new transmission. These guys are extremely knowledgeable on transmissions and gave me all the options and recommendations. My GMC runs better now than it did when it was new. Even gave me a tour of their facility which was 5 stars. There is no other place to get a transmission in Phoenix.

I had them do a stage 3 48RE build/upgrade for my 2006 Ram 2500. Very quick turnaround. I previously ran their stage 2 and it was a quality piece, I just needed a more stout transmission after adding power and using the truck more aggressively. Had one issue with an electronic part in the valvebody that was beyond their control (a common part that is known to fail in these transmissions across the board), they diagnosed the issue and I was back in action. I have faith the new stage 3 will treat me just as well. Great products and customer service. Definitely the go-to place for a performance transmission build in Arizona.

I order a transmission from trier one and i installed it my self. Took the truck on a 1000 mile road trip on 8-10% grade and I have never rode in or driven a truck with such smooth shifting in those conditions wether it be stock or aftermarket transmissions.

Huge shoutout to Dave for being awesome in customer service never dealt with and one so great
And thank you tanner for building such a great trans
Anyone that needs a transmission wether it be a spare or need one redone give these guys a call they know what they’re doing

I talk with these guys had my truck dropped off they called me a few days later and let me know it was done. I picked the truck up went thru the break in. This trans really is super BADASS! If you are looking for something you don’t have to worry about it breaking this is the place. Called today and ordered a service kit parts will be on my door step in a few days.

Best service in town by far called Tanner at tier one they had a trans built and my truck back on the road in less than a week.

Stage two, 48re runs like a champ towing and off road.
Always helpful when I have questions.
Highly recommend!

Speedy and great trans replacement. Called with updates and gave great instructions for break-in.

Do not use these guys. I wish they had a zero star. 10k dollars trans out 3 times and still wrong. Fast forward 8 mouths and trans out again. Find a different guy!