SPARCO 6-Point Bolt-In Roll Cage for BMW M3 Coupe E46 2000-2006 6-point bolt-in steel (Fe45) roll cage with door bars. Installation of a FIA Appendix J-approved roll cage is simpler than that of an ASN approved roll cage. Characteristics: 6-point roll cage, includes FIA-required door bars. Weight: 24 kg Material: Fe45 steel Homologation: FIA The drawings provided are intended only as an example and are non-binding.