Saturday, November 7, 2026 · Customer reviews of US businesses
The Fair Hearing score
Excellent
121 reviews
Quantum GearSelect a line to read only those reviews.
Honesty, pricing, process and quality scores appear once 5 customers have rated them.
At Quantum Gear, we understand that a failing transmission is stressful — and that trusting someone with a repair this important isn't an easy decision. That's why we focus on doing things the right way, from the first click to the day your unit arrives.We specialize in remanufactured GM automatic transmissions, with our core lineup built around the 6L80 and 6L90. Every unit goes through a complete remanufacturing process, where worn and failure-prone components are replaced and restored. Before anything ships, each transmission is tested on a dynamometer, so we know it performs the way it should — not just on paper, but under real load.We ship nationwide. Ordering is done online, and your unit is delivered by freight straight to you, wherever you are in the country.Whether you're a repair shop, a mechanic, or a driver simply trying to get your vehicle back on the road, our goal is the same: make the process clear and straightforward, and hand you a unit you can rely on. No guesswork, no runaround — just a properly remanufactured transmission and people who are ready to help when you have questions.
Quantum Gear (quantumgear.us) has 121 customer reviews on The Fair Hearing, with an average rating of 4.9 out of 5.
Showing 108 reviews with 5 stars · Clear filters
A well deserved 5 stars. The new transmission is way smoother at shifting than the original GM transmission doesn’t clatter and downshift like the original. Transmission was delivered right on time, customer service was responsive and my refund was issued very soon after the return shipping. Also had very reasonable price for such quality. We will definitely use Quantum again. Workhorse Mobile RV
By Workhorse Mobile R.
very good and fast
By Thiago D.
Response from Quantum Gear· Oct 23, 2026
Thiago, four words and every one of them good. Thank you, and we're glad we could move quickly for you.
I called and talked to a specialist about some concerns I had with purchasing the new transmission and was quickly reassured me that I would have no issues, I ordered the transmission. Quantum shipped out the next day. I received it just like they said 2 days after placing my order. It delivered to my guys and they installed it with no issues. This truck shifts so smoothly and I have already put around 1000 miles on it since it was installed. The core was picked up and I was credited with in a week. I will definitely recommend Quantum to anyone and would purchase from them again.. Thanks again.
By Paul O.
Response from Quantum Gear· Oct 19, 2026
Paul, the phone call is the part I'm happiest about. Having doubts before a purchase this size is normal, and I'm glad talking it through with us was enough to put them to rest. A thousand miles in and the truck still shifting smooth, that's the part I read twice. Thank you for the long write-up.
It was super easy to place the order, arrange shipping, and return the core. They are super fast and efficient and make sure that you're taken care of. The instructions are thorough and the seals and fluid they send with it make it basically a total package where you can simply install it and go.
By Ian J.
Response from Quantum Gear· Oct 19, 2026
Thank you, Ian. Fast only counts if the rest of the process holds up, and it sounds like it did for you from the order to the core going back. Really glad you felt looked after along the way.
Great product and service. THe shop was super easy to deal with and the transmission looked brand new. Save a ton of money having it installed by a local rather than the dealership. Lets see how long she goes.
By Carissa L.
Response from Quantum Gear· Oct 19, 2026
Carissa, going local instead of the dealership and still getting a unit that looks new, good call on both counts. Thank you for the kind words, and we're rooting for her right along with you.
They were easy to deal with, prompt shipping, great communication. The guys at quantum gear will take good care of you and stand behind their work.
By Martin Y.
Response from Quantum Gear· Oct 19, 2026
Martin, standing behind the work is the part we care about most, so reading it from a customer in his own words lands harder than anything we could say about ourselves. Much obliged.
Everything went smoothly,great price, quality as expected
By Ed W.
Response from Quantum Gear· Oct 19, 2026
Thanks a bunch, Ed. No surprises on the price and none on the unit, and that is all any of us were hoping for with your order.
Transmission worked great at a fantastic price!
By Sheas R.
Response from Quantum Gear· Oct 15, 2026
Price and performance in the same sentence, that's the combination we're after. Thank you for this.
