Increase friction area by a very serious 24%. This 280mm to 312mm x 25mm 5x100 rotor includes GTI 337 drilled and slotted rotors, 1.8T/VR6 calipers, bearing, hubs, pads, and bearing housing. Fits '99-2005 Golf/Jetta, New Beetle, Audi A3 2.0 & TDI.