Girodisc Lamborghini Murcielago ('02-04) 355mm Front RotorsThe Girodisc system is a direct replacement for the OE disc. No modifications are necessary. The disc will bolt directly to the car and work with OE calipers perfectly. The Girodisc front rotors are approx 24. 5lbs vs. 27lbs for the stock units. By upgrading your brakes with lightweight high performance replacements as opposed to a big brake kit, your factory bias is maintained as well as your ABS efficiency. This reduction in rotational and unsprung