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?
Visite one of our locations!

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Customer Reviews
They did a good job,...
Lisa Overland
They did a good job, pretty fast so far so good. Shifts good.They did break an exhaust sensor, did not mention it to me after l showed the warning light to em. Cost me anouther $200 at Midas while getti g an oil change.
Date: June 29, 2022
Website: Google
Very nice staff and service...
Rehman Sherazi
Very nice staff and service with enough satisfaction to your questions and concerns.
Date: June 28, 2022
Website: Google
Great people and service!!Service: Transmission
Robert Vieth
Great people and service!!Service: Transmission
Date: June 28, 2022
Website: Google
Zaff was really good.Services: Body &...
Ze Ad
Zaff was really good.Services: Body & Trim, Oil change
Date: June 27, 2022
Website: Google
I have used this location...
D Anderson
I have used this location (Centennial Pkwy.) for transmission repair and preventative maintenance work on several occasions, with more than one vehicle over the years. Owner Steve is both courteous and knowledgeable. The work done here is honest and reliable. They are not in the business of overcharging for work that isn't required! I would highly recommend this location to anyone in need of transmission repair or service.Service: Transmission
Date: June 27, 2022
Website: Google
Great service and honest !Fixed...
NatyBe Creator
Great service and honest !Fixed my problem with very little headaches!
Date: June 26, 2022
Website: Google
Doctor Matt and his crew...
Michael Crofton
Doctor Matt and his crew fixed up a bad situation on a 700R4 in an old car. It’s tough to get ANY shop these days to even consider working on ol school Detroit muscle. They’ve touched both my cars and I wouldn’t have anyone else deal with my drivetrain issues. Thnx again Matt
Date: June 25, 2022
Website: Google
Fantastic place! Staff so friendly...
Dave Nelson
Fantastic place! Staff so friendly I would work there!!
Date: June 24, 2022
Website: Google
Excellent people small family business
Casperft Dubbert
Excellent people small family business
Date: June 23, 2022
Website: Google
A true “five stars” service...
Adnan Isakovic
A true “five stars” service by a professional Team of experts!Had intermittent transmission issues with my old SUV and previously tried to get help from the dealership, with no resolution - until I called Eric.Got immediate attention and effective service. Eric is passionate about his business and someone you can trust without reservations. You will get the best transmission job done for a fair price.Highly, highly recommended!
Date: June 23, 2022
Website: Google
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