Disc Brake Caliper Rebuild Kit by GiroDisc®. Been to a few too many track days? Didn't have GiroDisc titanium pad shields behind your pads? Now your dust boots are cooked but GiroDisc can help. These boots are manufactured for you to GiroDisc specifications and will have your calipers looking like new again. One kit has enough dust boots and piston seals to rebuild one caliper. GiroDisc recommends pairing fresh dust boots with the titanium pad shields to extend service intervals going forward.