Daily-Driving, Commuting, Cars, Trucks, SUVs UPGRADE - Z23 Evolution Sport BRAKE UPGRADE KIT Fitment Information Mazda Miata NA (1990, 1991, 1992, 1993) Specs: Bolt Circle (in): Front - 3.9, Rear - 3.9 Diameter (in): Front -9.3, Rear - 9.1 Height (in): Front - 1.8, Rear - 1.4 Hub Hole Diameter (in): Front - 2.2, Rear - 2.2 Minimum Thickness (in): Front - 0.6, Rear - 0.3 Nominal Thickness (in): Front - 0.7, Rear - 0.4 HAT # of Holes OR Studs: Front - 4, Rear - 4 Rotor Construction: Front - HAT, Rear - HAT Solid / Vented: Front - VENTED, Rear - SOLID Stud / Stud Hole Size: Front - 13, Rear - 12.7 Z23 Carbon-Fiber Ceramic Brake PadsUpgraded braking performance designed for every-day cars, trucks and SUVs Dual-Layer Rubberized ShimsBetter noise insulator for virtually silent braking Drilled, Slotted & Zinc Plated RotorsProvide maximum cooling and helps protect against rust and corrosion Premium Stainless Steel Hardware Hi-Temp Brake Lubricant Product Description Forget standard, off-the-shelf parts. The Z23 Evolution Sport Brake Upgrade Kit comes with everything you need, from pads, rotors, and premium stainless steel hardware for an easy, bolt-on stopping power upgrade for your daily-driver. Along with increased braking power, our Carbon-Fiber Ceramic brake pads feature a dust and noise-free formula to keep those wheels looking great while you enjoy a quiet ride. The pads combine with Drilled, Slotted, & Zinc-Plated rotors that ensure a cool, smooth ride that protects against rust and corrosion. Give your daily-driver the easy performance upgrade it deserves with the Z23 Evolution Sport Brake Upgrade Kit. The PowerStop Difference Brakes you can trust - We're bringing quality brakes to every vehicle on the road. Because when we can all stop better, the roads are a safer place. The easy way to upgrade - Our brake kits have everything you need to get rid of weak brakes, and it's all delivered in one box. Quick Stop. Stop Clean - Every brake pad in our lineup uses a carbon fiber ceramic compound, making your brakes noise & dust free. Why buy your PowerStop brakes from Redline360? Redline360 sells only genuine and authentic PowerStop brake kits, and PowerStop offers their 3 year, 36,000 mile warranty when when purchased through a dealer such as us. The warranty does not cover normal brake wear.