Spoke mount. Offers drastically improved braking performance and looks over stock. It is a simple bolt-on installation, but will work in combination with 18" or larger wheels only. The brake disc is made of 420 stainless steel and is drilled for optimum performance and heat dispersion. Kit includes one brake disc and one billet brake caliper adapter bracket, to compensate for rotor diameter so the stock caliper can be re-used, and all required installation hardware. The brake line is also re-used. Compatible with stock or aftermarket fenders. Mount style 'D'. Open center with 6.7" BCD. Half moon bolt mount holes.