Sinister Diesel - Transmission for Duramax

GM Duramax - Transmission for Duramax
Modified Chevy or GMC Duramax diesel trucks can have a hard time getting every bit of horsepower and torque to the wheels with a factory stock diesel transmission. That’s why an upgraded diesel performance transmission is the best bet to handle the 1500 lb-ft of torque that some modified Duramax engines can produce. Sinister Diesel stocks a wide range of diesel transmission parts and components that you need to ensure reliable drivetrain operation in your stock or high-power Duramax build.

Eliminate Weak Links in Your Duramax Drivetrain

The stock diesel transmission is the single weakest link in your drivetrain when building a high-performance truck. The raw power and torque produced by a diesel engine, especially under load can be too much for the complex and intricate gearing inside your transmission. In our catalog below you’ll find performance clutch kits and torque converters, transmission controllers, and upgraded valve bodies to prevent transmission slip. And for stock transmissions, you’ll also find cooling kits and deeper transmission pans to combat heat buildup and extend the lifespan of your gears. At Sinister Diesel, it has been our mission for years to push diesel performance beyond just horsepower and torque and into uncompromising durability and drivability and that drive is what fuels most of what we do.

Trusted Brands from Sinister Diesel

We stock the very best in diesel performance transmission parts from trusted brands like aFe, ARP, ATS Diesel, BD Diesel, Bully Dog, Mag-Hytec, Merchant Automotive, Mishimoto, PPE, Suncoast Converters, and Valair. And we’re happy to answer any questions you might have about the products in our inventory and if they’re right for your specific application. You can reach our knowledgeable diesel experts by phone, email, or by using our easy and convenient live chat. At Sinister Diesel, we’re committed to making sure you find the diesel transmission parts and components you need to build a drivetrain you can rely on.

Select a Sub-Category