I bought these from Sportbiketrackgear.com and used them for one track day. I then decided to upgrade my calipers so I can’t use these anymore! I measured their thickness out of the package and I see no measurable loss in thickness after the one track day, so these are like new. They cost new about $155 for the two caliper set from Sportbiketrackgear... I’ll let them go for $105 shipped with USPS priority mail in the U.S. Please P.M. if interested. First come first serve... Note: brake calipers in photo are not included in sale.