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TRANSMISSION BUILDS

Automatic Diesel Transmissions

STOCK TRANSMISSIONS CAN LET YOU DOWN.
Stock transmissions are known to FAIL! They were not designed to hold up to extra power or very hard work. How do we know that? Because our stock unit failed on us. too. That's how we got here.

YOU NEED A TRANSMISSION YOU CAN COUNT ON.
Your transmission should be able to work and play as hard as you do. You need a transmission that is reliable, fun to daily drive, able to handle heavy towing or simply match your performance mods.

WE BUILD STRONG AND RELIABLE TRANSMISSIONS.
Our transmission builds were created out of necessity. They are designed to withstand work, play, towing, and horsepower.

CHECK OUT THE BUILDS
below to find a transmission that will be reliable, respected and hold up to your power needs.

Dodge RAM

68RFE Transmissions     Over...

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Dodge RAM

47/48RE Transmissions  Choose the year of your truck:  

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Chevy/GMC

Allison Transmissions Choose the year of your truck:

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Performance

Parts and Upgrades

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Estimate

Get an Estimate! Contact us to get your options! Need a rebuild?  RedLine

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HOW OUR PROCESS WORKS

Upgrade your Transmission
in Three Simple Steps

Choose Your Perfect Transmission Build

Select the transmission build that best fits your truck's needs and performance goals. Our expert team is here to guide you through the options and help you make the best choice.

Decide on Installation or Shipping

Once you've chosen your transmission, decide if you want us to install it for you or if you'd prefer to have it shipped directly to you. We offer professional installation at our shop or secure shipping to your location.

Put your Power to the Ground

Enjoy Your New Reliable Transmission! Sit back and enjoy the peace of mind that comes with a high-quality, reliable transmissions from RedLine Transmissions. Experience improved performance and reliability on the road.

GET TO KNOW US

About Us

With over 22 years in the industry, we are RedLine Diesel Power, also known as RedLine Transmissions, and we KNOW Cummins and Duramax transmissions.

We build performance transmissions for Dodge RAM 68RFE, 48RE, and 47RE, as well as Chevy Allison 1000/2000. Our diesel transmissions are custom-built in-house with QUALITY USA parts, designed for longevity, with the added benefits of power and performance.
ENGINEERED TO SHIFT YOUR POWER TO THE GROUND
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Transmissions Built
1800
WHAT OUR CUSTOMERS SAY
Testimonials
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MONDAY
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TUESDAY
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WEDNESDAY
8 am - 5 pm
THURSDAY
8 am - 5 pm
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8 am - 5 pm
SATURDAY/SUNDAY
CLOSED

(Closed for lunch 12 pm -1 pm)