Is this product legal in all 50 states?
Sinister Diesel Blue Spring Kit with Adjustable Billet Spring Housing for 2003-2007 Ford Powerstroke
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Open Apr 23, 2026 - 09:10 AM
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Answer
Apr 23, 2026 - 09:10 AM
Yes, this 6.0 blue spring kit is 50 State Legal, carrying a CARB (California Air Resources Board) Executive Order (EO) number D-721-4, ensuring it meets emissions standards nationwide—especially important for customers in states with strict emissions regulations for the blue spring kit 6.0 Powerstroke.
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