AST Rollcages V4 Weld-In 8-Point Roll Cage for Audi Coupe B3 (Quattro) - FIA VN511 Salt Flat How do I correctly choose

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Each gear is designed to be mounted in place of the OEM one

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AST Rollcages V4 Weld-In 8-Point Roll Cage for Audi Coupe B3 (Quattro) - FIA VN511 Salt Flat How do I correctly chooseAST Roll Cages SpecificationsAttention : AST roll cages designed and built according to FIA Appendix J may not be approved depending on the year of preparation of your car. Indeed the safety requirements are often revised in Appendix J by the FIA. Check with your Federation Sporting Organisation for the minimum safety requirements specific to your vehicle version engine and type of event and or championship to be contested. AST roll cages have 4 to 10