From what iv heard k03's are usually good for around 100k but many last way more then that. I'm at 145k and just start started making noise on cold starts. I also run stage 2 software spikes at 22 and holds 20. That's ally for k03's I bet you'll be ready for them when they go. And for 5k you could go stage 3 or replace the k03's with k03's cheap enough. Iv found 20k millage k03's for 200 bucks



