Six4 Motorsports is built around hands-on mechanical experience, performance, and a real understanding of the machines we sell parts for.
We specialize in ATV and Dirt Bike engine work, performance parts, rebuilds, and race-focused builds. Our goal is simple: provide the parts, knowledge, and service riders actually need without the guesswork.
More Than a Parts Store
Six4 Motorsports is not just an online catalog.
We work on engines, diagnose problems, build performance combinations, and understand how the parts we sell are actually used in the real world.
That means customers can shop for parts with confidence and also turn to us when they need help with repairs, rebuilds, or performance upgrades.
Race-Focused Performance
The performance behind Six4 Motorsports did not happen overnight.
Years of testing, development, engine building, measuring, tuning, refining combinations, and learning what works under real race conditions have gone into getting our engines to perform at the level they do today.
That work has contributed to championship-winning results and continues to shape how every performance engine is approached.
We believe there is a major difference between simply assembling an engine and developing an engine package that performs when it matters. Our race-focused builds are backed by real experience, constant refinement, and the understanding that reliability, power, and proper setup all have to work together.
When you send an engine to Six4 Motorsports, you are benefiting from years of hands-on development—not just parts being installed from a catalog.
What We Offer
- ATV and motorcycle parts
- Performance and race parts
- Complete engine rebuilding
- Blueprinting and precision assembly
- Race engine preparation
- Vapor blasting and cosmetic finishing
- Cerakote options on select components
- Nationwide engine shipping service
Built for Riders
Whether you're maintaining a trail machine, rebuilding a race ATV, or looking for more performance, Six4 Motorsports is here to help you get the right parts and the right work done.
Questions about a product or build? Contact us and we'll help point you in the right direction.