Built by Engineers. Trusted by Riders Who Care About the Details.
Two-stroke builds demand precision. Fitment, geometry, reliability, and performance all matter — and there’s no room for shortcuts.
Your Bike Deserves More Than Guesswork
Two Strokes Only exists to give classic two-stroke machines a second life using modern engineering, proven fabrication, and hands-on expertise. From high-value conversion builds to precision-machined parts, everything we make is designed, tested, and refined in-house.
The Two-Stroke Story
The Problem: Keeping Two-Strokes Alive Isn’t Easy
As two-stroke platforms age, quality parts disappear. Fitment becomes inconsistent. Knowledge fades. Riders are left choosing between outdated components or questionable aftermarket solutions that compromise performance and reliability.
The Solution: Engineering-First Two-Stroke Development
TSO was created to solve that problem properly.
Founded in San Diego by Luke Arana, Two-Strokes Only applies modern engineering methods to classic machines — combining 3D scanning, CAD modeling, simulation, reverse engineering, and rapid prototyping to develop parts and complete builds that fit correctly and perform as intended.
The Outcome: Better Riding, Better Builds, Longer Life
Luke’s background designing high-performance components for Camburg Engineering’s Kinetik series race trucks shaped TSO’s philosophy: precision first, aesthetics second, and zero compromises on quality.
The result is two-stroke parts and builds that feel modern without losing their soul — improved fitment, refined handling, and confidence every time you ride.
Not Just Another Shop. Not Just Another Parts Brand.
This isn’t just another moto brand. It’s purpose-built for riders who care.
What makes Two Strokes Only different:
- Engineering-led development: Every product starts in CAD, not guesswork
- In-house everything: design, fabrication, testing, and refinement
- Conversion expertise: geometry, tolerances, and system-level thinking
- Build-first mindset: parts are proven on real bikes, not just sold
- Hands-on support: guidance before, during, and after purchase
Built by People Who Ride What They Create
TSO isn’t a factory. It’s a hands-on operation led directly by the people designing and building the parts.
Luke and the team are involved in every step, from concept to final fitment. That means real accountability, honest recommendations, and a level of care you won’t find in large-scale manufacturing.
Proven on Real Builds. Trusted by the Community.
TSO builds and components have been featured in high-profile projects and trusted by riders who demand excellence and custom restorations that push what’s possible with vintage platforms.
Unsure About Fitment or Complexity? That’s Where We Help.
Two-stroke projects can feel overwhelming. We make them manageable.
- Fitment guidance before you buy
- Clear recommendations based on your platform and goals
- No pressure, just honest expertise
- Support throughout the process
If something isn’t right for your build, we’ll tell you.
Global Orders
Built in San Diego.
Trusted Worldwide.
We work with riders across the U.S. and internationally. Whether it’s a single component or a full-scale project.
If you care about doing it right, you’re in the right place.
