About Us (legacy - use global orders)

TSO: Passion, Innovation, and Excellence In Two-Strokes

Central to our company’s vision is Luke Arana, a passionate engineer and innovator in the dirt bike community. With a rich background in designing high-performance parts for Camburg Engineering’s Kinetik series race trucks, Luke has channeled his expertise into creating top-tier components for dirt biking enthusiasts. His dedication to excellence has transformed his love for off-road performance into a respected brand known for quality and innovation in the industry.

The Business

Founded by Luke Arana in San Diego, TSO is a small, independent company dedicated to the art of two-stroke dirt bike restoration and performance. We specialize in creating the highest quality two-stroke parts, from cosmetic restyle kits to complete billet engines, ensuring exceptional performance and customization for every rider.

What sets us apart is our commitment to keeping older two-strokes alive and enabling some of the most beautiful restorations and custom builds. We leverage modern engineering practices such as 3D scanning, modeling, simulations, reverse engineering, and rapid prototyping. These cutting-edge techniques allow us to innovate quickly and with precision, pushing the boundaries of what’s possible while preserving the legacy of these classic machines.