If your transmission is slipping, shifting hard, throwing codes, overheating, or just not driving the way it should — you’re in the right place. And if you’ve already added horsepower but know your stock transmission won’t survive the power you’ve built, you’re also exactly where you need to be. A weak transmission doesn’t just hurt performance — it creates stress, downtime, and expensive failures.
 

The truth is, every truck combination is different. Power level, tuning, tire size, gearing, towing weight, and driving style all directly impact what your transmission needs to survive and perform. That’s why our estimate form is detailed. The more accurate information you provide, the more precise we can be.

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 RedLine Transmission is one of the most sought after builds in the industy, We specialize in the 68RFE, 48RE, and 47RE behind Dodge Cummins, the Allison behind Duramax, and the 6R140 behind Power Stroke platforms. These are the units we build, strengthen, and refine every single day.

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Take a few extra minutes to complete the form and you’ll receive a realistic, customized estimate. Our goal is to give you clarity up front, eliminate surprises, and design a transmission build that matches your power, your workload, and your expectations the first time.