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This is to introduce you to the Demon Speed caliper retaining bolt.
On the GT3, our calipers have a special bolt/pin in the center that retains the pads, as you know.
Porsche designed this bolt so that it is retained by a flange bolt in the back of the caliper and in the front is a special head with two flats on it. The two flats fit into the caliper body and this is what is expected to stop the bolt/pin from rotating when removing the flange bolt in the rear.
However, over time the body of the caliper can be damaged from this. Even to the point where the pin just rotates in the caliper and you can not remove the flange bolt without somehow stopping the pin from rotating (like jamming a screwdriver in it)
We came up with a special pin design that incorporates a hex head in the front. This now will allow you to hold the pin from rotating without damage to the caliper, or if your caliper is damaged, allow you to remove the flange bolt all together. Material and strength are the same as the original pin. The pin is also plated to make for easy cleaning.
You can see them in the store here. And, we have a rennlist coupon code set up for these right now: CALIPERBOLT