About Us

Siskiyou Diesel was founded in 2007 in Mount Shasta, California, in Siskiyou County, where Mat and Kat Ray grew up. What started as Mat’s personal passion for diesel performance – working on his own truck and constantly pushing for more power – quickly evolved into a full-time diesel performance and repair shop. His love for power led to breaking parts, learning what worked and what didn’t, and gaining hands-on experience along the way. As word spread about their ability to fix trucks, the business began to grow.

In the early years, Kat joined in, taking the wheel of her own truck at the drag strip, and it was clear that the racing bug had bitten both of them. As the business continued to thrive, the couple decided to move to Southern Oregon, seeking new opportunities and distancing themselves from California. The move was a game-changer, allowing them to expand their business, invest in better tools, and hire the right people to continue providing top-notch services.

Siskiyou Diesel specializes in working on Ford, Chevy, and Dodge light to medium-duty pickup trucks. The shop sticks to these brands because they know them inside and out, constantly refining their skills and knowledge. Over time, they've brought in passionate and skilled individuals to join their team, including experts like Tony Salas, who provides specialized training on the latest issues in newer trucks, from emissions diagnostics to CAN Bus communications. This focus on continual learning and expertise helps them stay ahead of the curve and solve problems that other shops might struggle with.