Experts in Dodge Ram Cummins

Transmission Dionne offers heavy-duty and high-performance solutions for your Dodge Ram Diesel, including heavy-duty Transmissions/Torque, Differential ratio replacement and Custom calibration to optimize your truck's performance.

A team at your service

Don't hesitate to contact us with any questions you may have, our team is here to help!

Over 5,000 projects

With 45 years' experience and over 5,000 completed projects, we know how to take care of your trust! This experience makes us an indispensable reference for enthusiasts and professionals in the sector.

A winning team

The experience and cutting-edge knowledge gained by our family team over all these years of passionate work make us one of the most specialized companies in the industry.

Customized products

Our transmissions, differentials and calibrations are tailored one by one to your truck's use, giving you an exceptional driving experience like you've never had before.

5 STARS ON GOOGLE

Customer testimonials

The guy has a passion, and you connect with him as soon as you walk in the door... I've had a Dionne in my Cummins for a week now, and wow... a real monster now!

- Denis

Excellent service with Raphaël, he'll do everything he can to get you on schedule and get the job done quickly. Even after the fact, he'll contact you to see how you like his work.

- David

Seriously, I just have good things to say about this company. Raphaël is a machine! You bring her your Cummins and you can be sure that you won't regret it. Very satisfied with my setup, a big thank you my friend!

- Keven

Courteous and impeccable service! Shares his passion and meticulous work. Don't look any longer to have your trucks modified, go see him at all costs! 👌

- Samuel