In March I bought a Power Stop K5858 front and rear brake kit with perforated/slotted discs and Z23 Evolution ceramic pads for my 2011 Honda Odyssey. Due to ongoing pandemic issues and a very busy work schedule, I didn't have time to install them until early July, so I missed the return window. Well I changed them due to brake pulsation and now I've ridden 1000 miles on them and the pulsation is worse than before replacing my cheap Duralast rotors that I bought from Autozone. I'm at the point where I'm going to restore the old ones and put them back on with a new pair of brake pads. Your support is literally non-existent. I tried to contact them but so far there was no connection. So my advice: stay away from it. You look nice, but that's about it. I took the car to the dealer and to several shops and they all said it was the rotors. How can a new high-end rotor cause ripple? I'm still waiting for them to contact me and explain this to me. Many Thanks.