I took my truck to them after being ripped off by another shop. They diagnosed my problem quickly. It ended up being a problem with my tires.They are very honest and customer friendly. They didnt even charge me a diagnosis fee as they knew I had been ripped off by another shop.I highly recommend them. I will definitely use them in the future.

I noticed my 4Runner started having a slight gear whine from the rear axle when I took my foot off the gas at higher speeds. Since I take my truck on trails back in the woods I wanted to get it checked out before I had a failure on the trail. My truck is verify modified with a solid axle one ton conversion on 40 tires so I was very selective about the shop I took it to. I heard a lot of great things about Walt and the team at National Differential so thats where I took my truck.Walt opened up my rear Dana 60 and checked the tooth pattern, backlash, and preload. He said everything looked great and would give me years of service. The noise he concluded was coming from the Motive gears I had installed, they were making the whine but it was nothing to be worried about. This was great news.The whole team there at Nation Differential was awesome and I would recommend them to anyone. They will definitely be building my next axles.

Outstanding!! Absolutely hands down great customer service and knowledgeable people.

This was my second visit, just as excellent at the first. The first, a couple weeks ago, they rebuilt the carrier for my Dana 80 in a couple hours. Today I brought in the pinion for it, it was in rough shape, theyhad cleaned up with new bearing pressed on with all the other parts to put it right back i . In and out the door today in less than 30 minutes. This will be my goto place for all my differential needs. Thank you very much.

Ive been in this place now twice. And both times got me the right parts even when a 4x4 parts store kept selling me the wrong ones. Had them get me a special seal to go in my dana 30. What ever your needing Id hit this place up.Thanks Scott.

This is the best shop that I have been in or worked with! Here’s what happened. The transfer case totally locked up and broke in my Chevrolet 2500HD diesel pick up truck. I couldn’t move an inch. I had a flat bed truck bring it to my home.I found National Differentials with a Google search and to my surprise they were in my hometown of Colorado Springs. Their beautiful website looked to good to be true with the colorful photos and spotless surroundings.I decided to drive to their address and verify if this shop was as good as their reputation. And to see if it was clean.It was better that what I saw on their site. The interior of the shop was filled with beautifully painted rebuilt differentials and transfer cases lined up on spotless shelves and racks. When I arrived, I met Walt and he offered to give me a tour and explained how they could repair my truck and get me going in one day. He showed me the newly rebuilt transfer case that would go in the truck. I was so impressed with his knowledge from twenty plus years. One of the owners, George, came out to introduce himself as well. This simply doesn’t happen these days. Their manners were incredible.I had the same flat bed towing company deliver the truck to the National Differentials shop and Walt did the work to perfection with cleanliness and great expertise. I was given a warranty for three years and the truck runs perfectly again. All at a great price.I am so grateful for this group of experts who treated me so well. I recommend them without hesitation. There are many other good shops but these guys are the best!. Call them. They ship rebuilt parts across the globe and can give customers the correct advice.Tim in Colorado Springs, Colorado

Do great work snow plowing on my snow plow trucks

I wouldnt let anyone repair or even look at my differential!

Bought a differential from them. Was for a specialty vehicle and it worked. Do be sure, when you return your core, to ship everything back to them. They need all the parts.

Walt has been awesome to work with. I bought a differential from National in August well the mechanic that installed it did some things wrong and in this last snow storm the differential gave up the ghost. Had it towed to him and he has taken care of me in rebuilding the differential again. This time I have no doubts that it will work for a long time coming since he is the one rebuilding it this time.Walt gives fair estimates and does top quality work.

I drove 715 miles from DFW (North Texas) to Colorado Springs to visit this shop. The rear differential on my 1999 Chevy Suburban was previously rebuilt by a local shop in my area and the workmanship was downright terrible. But after seeing reviews for National Differential and speaking with Walt, I knew this shop was going to take care of me. After they completed rebuilding my differential (in a half day’s time!) and also helping out on a couple other things, it was quiet and MUCH smoother heading back home. Big thanks again to Walt and also Mike for taking care of my truck.

Walt and Ron went the extra mile for me. Thanks guys

Job was done on time and correctly would highly recommend them guy knows what he is doing and is open to talking about what he does and giving info on things you ask

Wonderful experience dealing with them. Prompt, courteous service.

So far so good. Had my rear diff rebuilt and feels like a new truck again thanks to National Differential. Can’t wait until my front diff comes in.

This place is Super awesome, And Walt was really helpful he got me a great deal on my differental . I will definitely return if i ever need other work done . THANK YOU NATIONAL DIFFERENTIAL !

I took my truck to have my differential rebuilt. And they are very knowledgeable people, and quite friendly... They also were quick with thier services. And I highly recommend them !!!!!

I took my suv too get the differential repaired. And i was very surprised on how great the service was and vehicle Performance. Had my vehicle back in a day. Great job thanks..

These guys are the best. Top workmanship, honest, and fairly priced. Keep at it ! Thanks.

Top-notch work, honest estimates and quality work!

Great place to get your differentials transfer cases and manual transmissions rebuild or remanufactured units instock at most points in time Walt, Mike and George have always treated me right with great pricing will use them every chance i can get..

Walt and Mike at National Diff have gone out of their way to take care of my Jeep. These guys are truly an asset to the community.

Hey everyone, if you are in the market for a differential, transfer case or looking to make those mods that you’ve been dreaming about doing. Give National Differential in Colorado Springs a call and talk to Walter. They have the parts and the experience to get the job done right the first time.

Great service even with difficult circumstances. Will absolutely use again.

Absolutely love the shipping! This shop is great!

Good selection.... But high prices

Awesome service extremely fair prices did a great job on my truck! Got me right in and out

Walt did a great job! Thank you!

Excellent products and services

Appreciate the service

Great service