Brembo hpk disks, 320mm will Gsxr 1000, but good upgrade for the 600/750 as it comes with the shims and longer bolts to run the bigger disc. They’ve only done one track day which was half a day. And maybe a 50 road miles. Also rcs19 master cylinder Hel lines and tokico calipers included. Calipers that were rebuilt a couple summers ago
eBay