What is a Shift Kit?

By Mister Transmission

Today’s customers demand a transmission which shifts smoothly, is durable, and delivers excellent fuel economy all at the same time.

To accomplish these benefits we would install what is known as an automatic transmission shift kit, which is probably one of the most misunderstood upgrades in the automotive world.

Many people know the words, but not many fully understand what a shift kit truly does or why it’s desired. In short, an automatic transmission shift kit modifies the transmission’s shift timing in order to dramatically increase shift firmness and durability of the transmission components.

This is desirable because the automobile manufacturer’s engineers sometimes allow far too much shift overlap (when the transmission is actually in two gears at once) in an effort to increase shift smoothness. It’s this overly smooth, disconnected feeling that earned early automatic transmissions the label “slush box.”

While the extended shift overlap creates a very smooth shift, it also reduces the efficiency and durability of the transmission by making the friction surfaces work overtime. The added friction also creates excessive heat, which prematurely wears out seals and clutches.

Transmission shift kits can reduce this overlap time while improving the overall shifting action. By better utilizing the energy normally turned into heat by slipping during extended overlap, shift kits allow you to instead use that inertial energy for forward motion with quicker shifts, therefore you’re also able to notice improved city fuel economy.

Most vehicle owners are willing to live with the faster shift patterns in exchange for the extended durability and added fuel economy. Plus, the fact that shift kits can be installed in a few hours without removing the transmission from the vehicle makes them a logical upgrade.

We carry a variety of shift kits for most makes and models and would be more than happy to answer any questions you have. However, due to the fact that one misplaced shift valve or spring can result in a malfunctioning or damaged transmission, it’s highly recommended that you allow the experts at Mister Transmission to perform the installation of a shift kit for you. To have a shift kit installed in your vehicle’s transmission, please contact your local Mister Transmission.

Want to know more?
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Customer Reviews
Lorenzo and his team did...
Fernando Munoz
Lorenzo and his team did a great job on my VW Cabriolet. Lorenzo is very knowledgeable and provides an honest opinion. Repair had a fair cost, and I had a friendly service. I'm so pleased about finding a great transmission shop and shop crew.
Date: November 4, 2024
Website: Google
My sincere thanks to the...
Patricia Pike
My sincere thanks to the team at the Beechville Mr. Transmission. They spent the time to clearly explain what they were going to do and when it turned out that my transmission was unrepairable, they didn't charge for the time they had taken to look at it. They were very helpful and provided me with advice on next steps. Thanks guys. - Patti
Date: November 4, 2024
Website: Google
Thanks Phil for the great...
Dan Zybert
Thanks Phil for the great service you guys did for me fast transmission service with great warranty and prices.
Date: November 4, 2024
Website: Google
Casey and all the people...
Kaitlin Farmer
Casey and all the people there were so kind and helpful ! We really appreciate their service! We love how Casey would update us often. And the work that was done on our Dodge Journey was great. Highly recommend going here! Thanks Mister Transmission for all your great work !!
Date: November 2, 2024
Website: Google
Mister Transmission has always been...
Sunny L.
Mister Transmission has always been our first choice for vehicle repairs. They take the time to thoroughly check everything and, incredibly, they don’t charge any diagnostic fees. This is a huge relief, as other shops often charge hundreds just to diagnose an issue, even when they don’t fix it. Mister Transmission’s commitment to transparency and customer care makes them stand out. We trust them completely with our vehicles and highly recommend their service to anyone looking for reliable, honest auto repair.
Date: November 1, 2024
Website: Google
I had the best experience...
Tanya Comrie
I had the best experience with Mister Transmission at the Queensway. Uli took really good care of me and was very professional, kind and courteous. He was able to explain thoroughly what was the problem and gave me constant updates in terms of what was happening with my car. He took a hopeless situation with my car’s transmission (as stated by dealership) and fixed my car. It runs as good as new. John, the mechanic was very thorough as well. If you need your transmission done, please go to this location. As mentioned in another post, the owner and everyone at Mister Transmission are very honest and do a fantastic job. I cannot say enough good things about this place. Thanks Uli!
Date: November 1, 2024
Website: Google
Great service
Alan Fraser
Great service
Date: November 1, 2024
Website: Google
I recently had my transmission...
Nate Wilson
I recently had my transmission give out on my Nissan Rogue, I brought the car in and was explained the process, the price was fair and the work was done professionally. I was even able to get my brakes and exhaust repair at the same time. This shop offers it all for me, make sure to talk to Noah in the front for all your needs.
Date: October 31, 2024
Website: Google
Thank you Jordan and the...
Omar
Thank you Jordan and the amazing team. 1st class service.
Date: October 31, 2024
Website: Google
Thank you Jordan and the...
Omar
Thank you Jordan and the amazing team. 1st class service.
Date: October 31, 2024
Website: Google
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