Came here to get. 3.91 gear ration installed for my BMW E46 M3, Eddie and his team came highly recommended from a respected shop so I scheduled time and to drop off and get the install done. Jose was the tech performing the install and man, what an amazing job! Diff is quiet, no whine, feels absolutely OEM! These guys are the real deal! read more

Unitrax Differentials - Eddie and Jose are awesome! - Auto Repair Near Me - Corona, California

See all

This place is great! Had to have my f350 rear differential rebuilt and the front new bearings and seals. They did a great job at a fair price. Talk to Mark he's great to deal with and kept me updated while my truck was in the shop. I would definitely recommend taking your trucks or hot rods to this place. read more

Long-time customer of Unitrax since 2013. Got a few differential setups for different Miatas and 86/FRS/BRZs over the years; a couple of them went to set road race circuit lap records and win championships. Always quick turnaround time for bench jobs and customer support is top-notch. Eddie's a good guy; he called me about missing a few seals for my last differential rebuild and quickly got some to get the job done. And his communication is precise, to the point, and polite. Thank you good sir. read more

BIG thank you to Eddie and a shoutout to Paul for making the best out of a dreadful repair. I have a classic car which experienced a failed differential. Unitrax was a name that came up regularly for this kind of repair with even people on the other side of the country sending their cars here. Due to manufacturing delays, sourcing a new part meant a 6+ month wait, but Eddie kept tabs on it regularly. I finally have my car back, fully repaired and running great, and I'm thrilled with the results. Thank you Eddie for taking care of everything! read more

Great service on my 1969 Camaro Switch gears and they recommend changing the axles Their experience and willingness to share information to satisfy my needs was accomplished 3:42 gears new seals axles runs awesome Special shout to Eddie for his knowledge and recommendations Marks outstanding service and communication. I highly recommend them for service of our 3rd member read more

Unitrax Differentials - Thank you guy's outstanding - Auto Repair Near Me - Corona, California

See all

I just got off the phone with Eddy at Unitrax. I have not bought anything from them at this time, but Eddy took the time to talk to me about the problem I am having with my project. I feel that if he will take the time to talk with a random stranger, that Unitrax will treat their customers exceptionally well. If and when I need a product that they have, I will not hesitate to purchase from them. Thank you very much for your time Eddy. The other upside to Unitrax is i was referred to them from Currie Enterprses who said although they (Curie) couldn't help me due to manufacturer of my truck, that Unitrax probably could help. That's high praise in my book, and Eddy just proved their point. read more

Thank you Eddie and Unitrax for taking care of me and my truck. Had to replace a differential prior to a move and they were so quick and helpful, truck is back and running like new and Eddie checked in with me to keep me in the loop the whole time. Great experience! I will be back for any work I need done. read more

Eddie and the techs took AMAZING care of me. In and out in less than 30 minutes with all my problems fixed. Can't recommend them enough. Had some specific issues with a Datsun and OS Giken LSD and they were the only shop that got me covered. Will be coming here again!!! read more

Working with Eddie was FABULOUS ! He was able to locate what we needed for a 2008 Viper. Communication was great and parts needed were found! VERY knowledgeable and easy to work with. THANK YOU read more

I took my 67 Camaro to Unitrax and they did a great job! Eddie from Unitrax was great! He kept me informed during the rebuild. read more

Unitrax Differentials - Auto Repair Near Me - Corona, California

My truck just got finished here today, full differential rebuild and a ton more!! Eddie is the Man, and even the whole office crew they were super helpful and I much appreciate all the hard work on my 2019 ford F150, thank you guys and like I said Eddie is the MAN super helpful and reliable read more

I had my 2007 Toyota Tacoma calibrated. it runs great. Staff is knowledgeable and very professional. I searched my local area for this work and I'm so glad I drove the 2 hours to get it done here. read more

Needed help choosing a new rear axle for my motor home. Eddie was very helpful and gave me some great ideas. He went out of his way to help me. Thanks Eddie! read more

Worst customer service. Took my truck for differential work. And. An upgrade pn my supension. Very good quality parts on that. 5 stars. But. They did shitty job they dont give a shit. About customers. Bolts coming off on my control arms brand new installed by them. Had to tow my truck from barstow ca to corona where their shop is. They didn't cover my tow bill. They cracked my windshield. Shitty alignment on front wheels. Had to take it somewhere else to do right $6500. What i paid. For them to give me shitty work. I would not recommend to any one to come this place read more

I found this business very easy to work with. The service was fast and I found the information I asked for on my differential. I have a older car so you can't always find parts for it. They were able to get all the bearing and seals. read more

Unitrax Differentials - Auto Repair Near Me - Corona, California

Took my 2003 mustang GT to get rear diff fixed took only a couple days and they were really nice and great price professional quality

I decided to install a TruTrak differential. I checked prices and found the price was very reasonable. I made an appointment and the job was finished when promised...no surprises! read more

Want to say thank you to Eddie . I called regarding my 81 Oldsmobile deferential service and he was real honest and told me he was really busy and wouldn't be able to take me inn for a few weeks but was so kind to give me all the details on what type of oil to use and all the extra info that was needed . Wish there was more shops like this . Thanks Eddie read more

This review is for multiple visits to this excellent diff house. They were referred by my regular mechanic to work on my '06 Dodge Ram 2500 5.9L 4x4 Quad Cab. They have added Warn Hubs, front and rear Detroit TrueTrac Ltd slip differentials among other improvements. They are the very best at what they do with honesty and integrity beyond exceptional. They are more than fair in what they charge. When you come here, they will be clear about their capabilities and what they know. They will seek to satisfy. In all of my life, I have never experienced better, more capable service than what I experienced with Unitrax. Jerry, Eddie and everyone I met here are high quality people doing a tough job that they love to do! read more

I want to take a second to thank Eddie and all the mechanics here. The job they did on my Land Cruiser Birfield axel, was not easy. Eddie was very transparent and upfront about all costs and work. I felt very comfortable having this team work on my truck. I have worked in the industry myself for years and sometimes I feel taken by mechanics. That is far from the case here. Eddie allowed me to walk in the back and see my truck up on the rack and the master Toyota mechanic walked me through all the work being done. I would highly recommend this company. read more

Eddie saved the day! I have an old rusted classic truck that had been sitting for a year. The rear wheels were locked due to a damaged differential. I got a warning from my HOA to move the truck or face fines, so of course this was financially stressful. I like the truck too much to let it go. A mechanic referred me Eddie so I called him up for an average quote. Eddie was polite and professional. I knew that he could not quote over the phone, it was unreasonable for me to ask that. Yet, he did give me more or less some figure based on what I was describing. He warned that if it was worse he'd call me right away. Soon after I towed the truck to the Unitrax and got it delivered. Eddie kept his word and called me within a week with an assessment of the issue and a quote. He explained in detail what was wrong and looked for the most reasonable price in pars based on the year of the car. He salvaged most of the parts so I knew he was not trying to make a quick buck. The facts that many shops would not take my truck makes me feel so appreciative that Eddie was not afraid to take on the job. Many shops turned me down saying it was too hard of a job since the truck is 50 years old and others complained about the space it would take to house such a monster long bed. Eddie was brave. The guys at the shop deserve props too! The truck runs like new. Eddie noticed additional Issues and gave feedback as to where I can get these leaks addressed. Thank you Unitrax and Eddie for taking on my project, I will be back as a regular and will spread the word to classic car owners as to your skill set and customer service. read more

I had and accident 2 years ago and had Unitrax replace axel assembly n my Lexus lx450, As a shop owner and prior service writer for Caliber collision had been using Unitrax for over 20 years. They have always been professional and provided great service. I was hit by some meth head in oct 2016 and after reconciling with ins company had my reliable vendor Unitrax replace and reseal axle in January 2017. The Landcruiser is my 5th vehicle so dont do alot of miles. After about 6-8 months noticed steering wheel slightly crooked but still drove straight so didn't think much of it. Recently moved to Utah so started to drive more and started to notice more of a crooked steering wheel but still driving straight. Then noticed new seal replaced leaking right side. Took by local shop to get estimate to reseal. They gave me a quote few days later and was going to drop on my way out of town. Next day pulled out onto road and steering wheel went completely upside down, heard a pop and vehicle stopped immediately. Exited vehicle to find rt side trailing arm to steering linkage on ground. Reached underneath and found 2 bolts missing and 2 sheared off into housing. I have been in the industry for over 30 years and pretty much knew the bolts on axle housing that I had them replaced weren't properly tightened (torqued) confirmed the other two sheared bolts came out easily, not stripped and no loc-tite. As a shop owner I also know we all make mistakes. I called Unitrax and advised of the situation hoping they would step up and stand behind their work? Couldn't bring back to Unitrax as they were over 500 miles away so had local shop repair and sent copy of invoice to unitrax with shop number to confirm bolts missing no loc-tite in axle housing. After almost 2 weeks no answer so called and was told basically go pound sand? They claimed I abused the vehicle without inspection. So I guess for almost 20 years and 200k mi never had bolts fall out of the axle but after aprox 4500 miles the bolts fall out from abuse? I told them... hey it's ok I can eat the $700 dollars no biggie? Its your business you can do what you think is right? But I will also do what I think is right? As a shop owner there have been times we needed to step up because we made a mistake. Ethics means doing right by your customers because its right. They didn't want to do what was right and I thought that their future customers as well as their old loyal customers like me should know how they stand by their work. They don't and then they blame you for abusing the car. James Anthony Sweett Lake Forest, Calif read more

It's been a while since I was here but I still wanted to write a review for the older gentlemen who helped me out with rear axles for my chevelle. He was very helpful, took his time and showed me multiple options, made sure I had the correct part and it was going to fit. I will come back here again when needed because of the great service. read more

When looking for Drivelines and differentials go see Eddie he's your man that guy is so knowledgeable, asked me a lot of questions which is good trying to pinpoint my exact issue had them do the work and he was correct with his diagnosis, absolutely amazing shop highly recommend very honest very trusting read more

I called Eddie at Unitrax because I was not getting any power to my wheels on my 93' FJ80 Land Cruiser. I took it in the same day. Eddie quickly discovered the issue and had a quote to me. The job was completed reasonably quick and Eddie kept in communication with me which I liked. I'm relieved to have found an honest mechanic for my truck. I will definitely be bringing my FJ80 back. read more

As a Auto repair shop owner I depend on competent vendors to supply me with quality parts and supplies. The pros at Unitrax are my go to guys when anything differential is needed. These guys know their stuff and are down right good people and pleasure to do business with. I highly recommend Unitrax for parts and repair service. Keep up the good work. read more

I just came from there and it was not a good experience. It's pretty sad when a customer goes to have work done to spend some good hard cash and they are treated as the company is doing them favor, Just in the door some short rude guy with a mustache got bend out of shape because I came in the FRONT DOOR, his piss poor attitude did not get any better. I went there because originally I was quoted $800 to rebuild the Axle in my ford. this guy got it to $1200 and still wasn't done. I will never go back there again, Who ever this guy works for, he need's some management and personality training. Like Winston tire CEO used to say, " if he worked for me, he wouldn't be working for me." read more

Great place for rear end work. Eddie knows his stuff and explained everything that was messed up with my truck. . Major work done in 2 days . 1 year warranty. Fair price. Definitely recommend this place. read more

This place works on differentials and also install transfer flow auxilary fuel tanks. After calling various shops i gave this place a call. I spoke to jerry who took the time to answer my questions in regards to an auxilary fuel tank for my 2017 silverado 2500hd. He earned my business unlike other shops that left me feeling uneasy and unsure with this product. Jerry reassured me i was making the right decision going with transfer flow. Day of the install they had my truck a full day, upon receiving my truck I inspected their work. The wires were tucked neatly the hardware (tank and fuel guage) were secured to manufacturer specs. As of this day the auxilary fuel take works flawlessly. They may not be the cheapest but they do quality work. read more

Great service. They get your vehicle in and out. And will show you what they replaced and tell you why. Great service would recommend to everyone! read more

Awesome business. Really professional and knowledgeable. Had them install my already purchased ring and pinion after talking to Eddie on the phone and he said let's make an appt and bring my truck in. Had my truck back in a couple of days. Great pricing and service. Almost at 500 miles and no problems or loud sounds. Very thankful for this referral. Will recommend to all my friends and family. read more

These guys were great. I had them replace a leaking pinion seal on my Ford F-350. They did it in just a couple hours and for a great price.

UNITRAX was highly recommended by my local mechanic. They did repairs on my Hummer H3 front differential which ended up being a little more trouble than expected. Without question, Eddie did a fantastic job to make things right. read more

Took the plunge last summer to upgrade my 2003 F350 V10 4x4 crew cab. Had these guys install 4.30 gearing and Detroit TrueTrac differentials. I had a lower priced quote but Jerry was the only one who took the time to go into details, both on the phone and when I brought the vehicle in. I found him more approachable than others I had talked to and appreciated that he wanted to tell me about the work he was going to do as much as I wanted to hear about it. The work was done on schedule and as promised, and the only surprise was they were even able to bring the final price in below the original estimate. Truck has been all over since, towing trailers in California and driving backroads and in the snow in Utah. The additional capabilities now available have already proved to be quite useful. Everything has gone at least as well as expected and the components seem rock solid. Eddie told me as much when they did the break-in inspection and maintenance last month. I recommend Unitrax for anyone looking to have driveline work done right. read more

Recently took my truck in for a regear and had posi installed. We did have a issue with the original work preformed however they made it right where other shops would have denied any issues and would have told me to pound sand. They have earned my trust and have earned themselves a lifetime customer. I appreciate the honesty and quality work performed! read more

I've used Unitrax many times for my work trucks, my customers and my personal 4x4. Every time the work is perfect and the service is perfect. I hope they don't change a thing. They're the best and Eddie Is the Man! I'm calling them today for another truck and I know I'll get great service and fair pricing. read more

Great guy at The front desk (big Raiders fan) he was professional very informational and made me want to come back. This is just how every business should conduct themselves I brought it in 2004 Dodge Durango. And this week I want to bring in a Dodge van 2500 right before moving to Virginia. It's a long trip and I wouldn't trust anybody else!!! read more

I brought my 2004 Ford F-150 FX4 for a rear differential service on Sept 13,2016. My differential was making a loud grinding noise when I drove it. It almost sounded like stone grinding. I brought it in to a shop in my area and they referred me to Unitrax. When I brought in to Unitrax a gentleman named Edie quickly greeted me at the counter. I told him of my problem. They called their tech to go out for a test drive with me. After the test drive I left my truck there. They called in the morning and explained the details of what I needed done. I gave them a go. The next day I was just about to call them if they are going to need my truck over the weekend because it was Friday and I can plan other transpiration arrangement the weekend. Instead, they called me first, that my truck is ready for pick up. I was happy and took the bus from my work to the shop. When I got there I did all the paper work and transaction. They explained the details about my differential break-in period and showed me my old parts. They were friendly and very helpful. I drove my truck home and it was super quiet. They did a complete rebuild. All the issues I had were gone. They are the best when it comes to differentials. I am very happy with their service. I highly recommend them. read more

Unitrax rocks! Eddy is the man! They rebuilt my Dana 70 in my 1999 Ford E-350 Ambulance. He kept me updated and informed throughout the rebuild process. Excellent customer service and they used all factory Dana parts! read more