Rennline engineered 2-Piece semi-floating rotors offer real world benefits that can be felt on both the street and track! Rennline's 2-Piece rotors combine the advantages of weight savings and rapid heat dissipation to provide a rotor superior to stock while preventing warping and extending component life. The 17% reduction of unsprung weight by (2.65 lbs per rotor) improves handling characteristics under all situations. This reduction in rotational inertia allows for quicker acceleration, decreased braking distances, and more responsive handling.