This kit is the same thing the pros use and is great for the street and track. This kit includes four-piston Ferrari F40 calipers and pads for the front, cross drilled and slotted 13.1 inch front discs, stainless steel braided brake lines, and hats and brackets made specifically for the 350Z. This kit will decrease your stopping distance by up to 35%!Please note that 17\" wheels are required for you to be able to fit these rotors & calipers underneath your 350Z. Please note that on this kit the rotors a cross-drilled AND slotted. Brembo does not offer these in cross-drilled only or slotted only.This 2-piece system rotor system weighs in at about half what your stock rotors do, so all you road racers will appreciate this kit for the ~40 pounds it takes off your car. Billet aluminum hats are application specific and have been individually machined to engineering specifications. The copyrighted Brembo design of the rotors & calipers creates what they call a \'\'floating disc\'\' which reduces heat related stress and tremendously improves brake performance and pedal feel.Look at it this way: NASCAR, Indy F1, Ferrari, Lamborghini, Porsche, McLaren, & Nissan can\'t all be wrong!