Used with Simpson post clips. FIA standard 8858-2010 only approves helmets with the nut washer built in the helmet. If you purchase post anchors with nut washers from Simpson, you accept that these anchors do not comply with the FIA regulation. If you purchase post anchors without nut washers for use with helmets having a built in M6 terminal, these are fully FIA approved. Both types of anchors (with or without nut washers) are fully SFI approved. Specs: Brand: Simpson Racing Category: Vehicles, Equipment, Tools, and Supplies Emission Code: 6 FIA Certification: 8858-2010 Helmet Type: SAH Helmet Part Type: Head and Neck Restraint Product Type: Head and Neck Restraint Quantity: Sold as a Pair Sub Category: Safety Equipment, Tools and Accessories Warranty: Manufacturer's Limited 90 Day Warranty
