Rear Brake Rebuild Kit with Piston?

[7Tenths]

Has anyone found a quality rear brake rebuild kit?

Was just at Watkins Glen and a brand new hawk DTC 30 was pretty much dead after 2 days, went out for the first session of the 3rd day and had to push the pedal so far in for it to bite I called it a day and didn't want to get down to metal on metal. Running with Advanced Traction Control off, so I feel like the piston has to be sticking a little.

Don't really want to buy a whole new set of calipers, but i'm not finding much luck with Piston and I suspect the piston might need to be replaced too as the dust boot has been pretty well mangled. I did see Frenkit has a full kit, but I can't find any stateside retailer that has them

 

[cjatrains]

I run at Watkins Glen 6 track days every season as well. I run in Track Mode TC off, but I leave Ford Stability control on. I have had good luck running Pagid RSL29 pads in the rear, they last about 8-10 track days. I noticed the dust boot on my driver's rear piston is torn when I put in new pads for this season.

My plan is to see if OP Mustang sells the rebuild kit for the rear. I have been purchasing my Pagid pads from them for the past 2 years for my 2022 Mach 1, HP, 10R80. I haven't checked, but I know they sell high temperature rebuild seal and boot kits for the 6 piston Brembos up front.