About our Riverside Auto Repair Shop

Our Master Technician Miguel Barraza has decades of Differential Service and Repair Experience. He has performed Tens of Thousands of Jobs across every kind of vehicle. All major upgrade shops know Miguel Barraza to be a foremost industry expert. He is joined by his son Carlos Barraza and his brother in law as well as other high quality technicians. Miguel was the first major mobile gear installer in the market.

What seperates us from other Mobile operators is our vastly stronger physical and virtual presence. Our Mobile competitors do not have shops and are strictly mobile. They are difficult to trust for warrantly work as they are impossible to find when you need them most. We have Mobile service vehicles as well as a shop with a 15,000 lb heavy duty lift. We perform on-site service within a 100 mile radius from our actual shop in Riverside, CA.

We service General Repair Shops, Upgrade Shops and Transmission Shops primarily.

As an established brick and mortar business we attend trade shows like the pomona Lucas Oil - https://www.offroadexpo.com/pomona-ca and APEX/SEMA in Las Vegas Nevada. As an idustry leader it's important that we provide a well established and reliable presence so you know that we are here to support you for the future. Be careful and cautious with those other mobile only companies who are hard to reach and hard to find when you need more work or warranty service provided for your vehicle. They can easily dissappear leaving you in a bind. We help many customers who got burned by these less reputable mobile service companies.



Best Service

Our mission is to attract and retain customers by providing Best in services and solutions. We aren't a general repair shop trying to do specialty work. We only do Differential, Gear work and Axles!


The pricing won't be the lowest and won't be the hightest. The pricing will be the best possible pricing available for the quality of work and guarantee we provide.

Safety & Security

It's important to understand that doing your Differential properly is extremely important for your safety and the long short and long term stability of your vehicle. Some things are worth shopping for the lowest shop. Other things are worth finding the highest quality provider for the best possible price.


At Premier West Gears we are dedicated to making your experience a positive one. For most of us, the cost of a Differential job is an expensive but necessary endeavor. We understand that this may be a lot of money for you. We care first about your safety and the quality of the job and second to that is your satisfaction with the overall experience we provide.

We are here to make sure you are 100% Satisfied with the entire process. We aren't selling to the world. We are just selling to you!


We specialize in gears and differentials for a reason. It's important to have the most specialized company possible working on your important Differential and Gear project.


Miguel Barraza is our Master Technician of 30 Years!

We strive to ensure that our services have become a benchmark of quality in the field of Differentials and Gear work.


Premier West Gears is committed to ensuring effective communication and digital accessibility to all users. We are continually improving the user experience for everyone, and apply the relevant accessibility standards to achieve these goals. We welcome your feedback. Please call Premier West Gears (951) 320-1390 if you have any issues in accessing any area of our website.