Replaced my original 400,000 mile kit with these easy to replace straight parts at an unbeatable price. To update. The 8-20-20 rotors broke, started vibrating at about 10,000, now they're at 15,000 and I have to straighten them on a lathe. them for better quality. If you have 2 years of uptime, consider yourself lucky. I added that it took me a while to break in the pads and rotors, no hard stops during the break-in period, and then swapped out the rotors after 1000 miles to get an even break in both directions.