This is the ver2.0 model with a rear tow hook race strap specifically for the FL5. It comes with a special bracket that can be installed with bolt-on. This is a high-quality tow hook bracket made of 6mm thick stainless steel, which is stronger than iron and will not rust. To install, if you want to remove the strap from the toe hook cover, cut the top of the cover to remove the strap. If you do not want to cut the cover, remove it when using it. If you are not using the towing strut, retract it into the cover and install the cover. If not used for an extended period, it will protect the strap from discoloration caused by sunburn. Because it uses a strap system, it won't rust or protrude from the body, and can be used comfortably from the street to the track without worrying about vehicle inspection procedures.