Frequently Asked Questions
Answers to some of the most common questions about our products and services.
Are SPX engines street legal?
No. Our motors are designed exclusively for racing and off‑road use. They do not meet emissions or noise regulations for public roads.
Can I run pump gasoline?
Yes. Our builds are tuned to run on high‑octane pump fuel. For maximum performance we recommend using fresh 91–93 octane fuel and quality synthetic oil.
Do you offer a warranty?
We provide a limited warranty against manufacturing defects. Once any sealed component (such as the crankcase, carburetor or exhaust) is opened or the engine is operated, the warranty is void. Racing parts are inherently high‑stress and should be inspected regularly.
Can I order replacement parts?
Absolutely. We stock all components used in our builds. You can contact us to order individual parts or upgrade kits. Please note that part installation is not covered under warranty.
Do you ship internationally?
We currently ship within the United States. For international orders please email us — we can provide a custom quote and shipping options.
I still have questions — how do I contact you?
Send us an email or use the form below. We're happy to help you design your dream engine.
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