Hey James, I have not the 4000 series, just the normal ones but they have slots in em, they are the 'street series'.. Bout $100 a rotor. Pads I've got Bendix Ultimates, they were $120 for the fronts. I bought them from HiTeck Brakes in Moorabbin.. Autobarn wanted $175 for the Bendix, and about $120 each rotor.. Big improvement over standard, plus got rid of the shudder...