Each caliper is precision-machined from a single billet of aircraft-grade aluminum, ensuring lightweight strength and exceptional durability. The internal aluminum pistons are chosen for their superior heat resistance and reliable operation. This kit is designed as a direct bolt-on, simplifying installation with most applications requiring only basic tools. The kit includes Ksport's SC5 Street NAOC Ceramic brake pads, which are formulated to provide excellent performance for daily driving and occasional track use. These pads offer a significant reduction in brake dust (over 50% compared to race pads) and minimize noise and rotor wear, with optimal operating temperatures between 194°F and 1022°F. Additionally, the kit comes standard with D.O.T. compliant stainless-steel braided brake lines, which resist expansion under pressure for a quicker pedal response and a firmer pedal feel. Buyers can choose between slotted or cross-drilled rotor options: cross-drilled rotors are recommended for daily drivers due to better cooling, while slotted rotors are advised for track use. The calipers themselves boast an opposed piston design that enhances pad wear and rigidity compared to OEM calipers. The included CNC-machined carbon steel caliper brackets ensure a direct fit to the OEM caliper bracket locations. This Ksport Procomp Big Brake Kit is compatible with Toyota MR2 Spyder models from 1999 to 2007. It is built to order, with production and delivery typically taking 4-6 weeks.