Transmission Specialties

Transmission Specialties

Verification Status
Quality Standards 93%
Very High 7%
Customer Service 89%
Highly Rated 11%
On Time Delivery 81%
Very Good 19%
Overall Trust Rating 90%
"A" Rated 10%
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For over 40 years, Transmission Specialties has been in the forefront of creative new products for the high performance transmission and converter industry.

Every TSI Racing Converter is Spragless

If 90% of converter failures are caused by a slipping or broken sprag, why put one in a racing converter? Since the TSI patent on spragless racing converters expired, every racing converter manufacturer, except one, offers a spragless racing converter, thus dispelling the tired argument that a spragless converter is slower There is no better form of flattery than imitation of a superior product. With no sprag to fail, a spragless converter is more consistent and durable. We recently did the 1st stall adjustment on an 8” spragless converter built in 1984. That is unsurpassed durability for even a spragless converter.

Transmission Specialties has been building spragless racing converters for 30 years so no one has more experience building this racing converter.

Courteous and Knowledgable Sales Force

We expect every call to be a positive experience for every customer. All the salespeople at TSI appreciate the value of the customer, and treat him or her in a fashion they would expect. Some of our technicians have over 30 year experience in the transmission and converter business so there are very few areas where they are not knowledgeable and helpful. We know how difficult it is to gain a customer and how easy it is to lose one…you will find our sales force to be friendly and appreciative of your business.

Free Stall adjustments in the first 90 days of use

We at TSI want the best MPH and E.T. from your racing converter so we offer a 90 day “free stall adjustment” provided the combination has remained the same. No other company in the Industry offers this service as we want you 100% satisfied with your purchase.

Extensive Inventory of Racing Converters

Transmission Specialties pours the profits back into the business so we keep a huge inventory of spragless racing converters in stock. 90% of orders placed before 3 pm are shipped same day and the other 10% will ship within 24 hrs. Since we make all our own converter parts, we are never out of stock, so, if necessary, making a new converter from scratch is never an issue.




Find the most frequently asked questions below.

We are the Official Marketplace for the Transmission Industry.

If it can shift a gear, we've got it here!

Well, it's all in the name.. here at we bring together the top transmission brands from across the country.

Sort them, for price, quality, warranty, shipping, customer satisfaction and more.

You tell us what's most important to you and we do the shopping for you, plain and simple.

On top of that, all Purchases are backed by our exclusive Buyer Protection Program which is above and beyond any retailer's warranty.

Rebuilt transmissions replace the typical common wearable items. You typically see this from a local shop or your buddy in his garage.

Remanufactured transmissions are a much more thorough process. Dissasembling the entire transmission down to the bare case and replacing and upgrading components to a higher standard. Remanufactured transmissions are dyno tested for quality assurance.

Local shops serve a purpose and that is to help get you back on the road for installation or repairs.

However when looking for the best value, price, warranty, and quality.. we "know our shift". Rather than be limited to your local shop, we actually compare top transmission brands from across the country to get you the best value possible.

We often hear from customers looking to purchase a transmission from Summit or JEGS because of their price or delivery options. Please note that big box online retailers may appear to have what you want and at an unbeatable price, but that is often not the case.

Here at, we are actual transmission specialists and can answer the tough questions. Making sure you are actually getting the right transmission for your vehicle the first time and actually verifying realistic lead times.

The devil is in the details. Make sure when shopping online or locally to obtain a copy of the written warranty. Many companies tend to hide a lot of details that won't protect you when you need assistance. purchases are backed by our exclusive Buyer Protection Program, which gives you peace of mind.

Our dedicated team will shop & compare top transmission brands to ensure you get the best bang for your buck.

All you have to do is give us a few bits of information and sit back and relax.

A "core" is the old/original transmission that came from your vehicle. The majority of transmission companies require your old transmission in exchange for the replacement transmission.

Most suppliers have a refundable core deposit that is charged at the time of sale and is refunded later when your core is returned.

  • ★★★★★

    “Top notch service, thanks guys for helping me get the truck back on the road!”

    Dan Trundle
  • ★★★★★

    “I appreciate the quick turn-around. Got my replacement on time.”

    Tim Wolly
  • ★★★★★

    “2nd time using you, the process was very simple. I'd highly recommend to anyone looking for a transmission.”

    Riley Simpson
  • ★★★★★

    “I gave them what I wanted, they came back with 3 options. Saved me a bunch of time and I got what I really wanted. Thanks folks!”

    Mike Caldwell
  • ★★★★★

    “Quick delivery and pleasant reps. I got notified every step of the way. Thank you!!”

    Julie Udette
  • ★★★★★

    “Biggest concern was shipping cost because of where I live. They helped me find a reasonable option, thanks again :)”

    Ashley Inez
  • ★★★★★

    “I've got a modified mustang and wanted something that would handle more power and abuse. These guys took good care of me and got me the transmission and converter package I needed.”

    Benjamin Foust
  • ★★★★★

    “Needed a heavy duty trans for my Silverado 4x4, they hooked me up. Thanks yall!”

    Pete Munez
  • ★★★★★

    “My local shop wanted over $4k for the same trans I got from these guys for $3,200 delivered! Thanks for the deal and taking the time to help me.”

    Ernie Pleasant
  • ★★★★★

    “Couldn't be more pleased with my experience with these folks. They did a great job helping me pick out the trans for my hot rod and got all the parts for the install.”

    Dave Armstrong
  • ★★★★★

    “I wasn't sure what transmission I needed for my vehicle. Their reps were very patient and took the time to walk me through the process. I ended up saving about $400 compared to my local dealer. Thank you very much.”

    Susan Trundal