C6 SFI 25.1 / 25.2 Tube Chassis Roll Cage

Chevrolet Corvette C6 SFI Roll Cage / Steel Body Chassis Kit (4130 Chromoly)

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SFI 25.1K / 25.2E Certified — TIG Weld Only

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Our C6 Corvette roll cage and steel body chassis kit is engineered from 4130 chromoly and built for quick fitment and TIG welding. Each tube comes CNC notched and bent, ensuring tight joints and efficient installation without the need for custom fabrication.

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Key Features:

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  CNC Notched & Bent for perfect alignment

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  Laser-Etched Assembly Guides for hassle-free fitment

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  Pre-Drill Locations for TIG weld relief holes

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  Includes base plates to mount to the steel chassis (inside the bottom frame rails)

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  Built to meet NHRA / SFI regulations

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  Compliant with SFI 25.1K or 25.2E standards

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\nImportant: 4130 chromoly cannot be laser-etched on the backside of tube bends.
Etches will not be present in bend regions as they will crack during the bending process.
For these areas, you’ll need to manually align and drill TIG relief holes. All other laser markings will still guide a straightforward and accurate assembly. \n

Tubing Sizes (SFI Compliant):

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  1.625″ x .083″ — 4130 Chromoly

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  1.50″ x .065″ — 4130 Chromoly

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  1.25″ x .058″ — 4130 Chromoly

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  1.00″ x .058″ — 4130 Chromoly

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SFI Certification Options:

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  SFI 25.1K — For cars running 7.49 E.T. @ 2800 lbs. max

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  SFI 25.2E — For cars running 6.00–7.49 E.T. @ 3200 lbs. max

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Welding & Installation:

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This kit is TIG weld-only per NHRA and SFI specifications. Designed with clear guidance for a simplified install process — even if you're not a professional fabricator.

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What's Included:

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  All required 4130 chromoly tubing

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  Laser-etched alignment guides (excluding bend zones)

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  Base plates for steel chassis installation

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  Tailored specifically to the Chevrolet Corvette C6 steel body chassis

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Important Notes:

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  Made-to-order product – All sales are final

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  Ships once fabrication is completed

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