1. Great
Super Easy installation. My chain was tight but I found a cheaper set with 530 and O-ring being tight as well. I messed that up as I cut too many links. I ordered a cheap 520 and it didn't fit because the sprockets weren't 520. I went big and got the best you could order here. The DID ERV3 is what Valentino Rossi uses on his bike. The 520 is a lot smaller and lighter than the 530 and the binding is totally gone. Probably thanks to the patented design and super premium race grade quality rings and material. Doing the master link was no problem. I have a 2005 R6. I had to cut 2 or 3 links down to make it work but it fit direct w/o any adjustments. 16/48