Porsche Caliper Piston Seal Performance Kit - Frenkit 672801

Restore your original performance brake caliper with the Frenkit 672801 Performance Brake Caliper Repair Kit with Pistons. Designed for Brembo and other application-specific performance calipers using 28mm and 30mm piston sizes, this comprehensive rebuild solution replaces both the caliper's critical sealing components and pistons.

Brake calipers operate in an extremely demanding environment where repeated heat cycles, moisture, road salt, and debris can deteriorate piston seals and dust boots while promoting corrosion or wear on the pistons themselves. Over time, these conditions can contribute to brake fluid leaks, sticking or dragging calipers, uneven brake pad wear, and excessive brake temperatures.

Unlike a seal-only rebuild kit, the Frenkit 672801 includes replacement caliper pistons, making it particularly useful when the original pistons show corrosion, pitting, or wear that makes them unsuitable for reuse. Replacing the pistons along with the associated seals and dust boots allows a serviceable original caliper body to be thoroughly rebuilt rather than replacing the complete brake caliper assembly.

Frenkit manufactures this Performance-series kit specifically for demanding multi-piston brake applications. With application-specific 28mm and 30mm components, the kit helps restore proper hydraulic sealing, smooth piston movement, and protection against external contamination while retaining the vehicle's original performance brake caliper.

An excellent choice when overhauling aging Brembo brake calipers, restoring a performance braking system, or addressing worn and corroded internal caliper components.

Features & Benefits

• Complete Caliper Rebuild Solution: Includes replacement pistons in addition to the sealing components required to service the applicable brake caliper.

• 28mm & 30mm Piston Sizes: Application-specific components designed for performance calipers utilizing two piston diameters.

• Restores Original Calipers: Allows a serviceable OEM performance brake caliper body to be rebuilt rather than replacing the complete assembly.

• Addresses Worn or Corroded Pistons: Ideal for calipers where the original pistons are pitted, corroded, or otherwise unsuitable for reuse.

• Restores Proper Sealing: New piston seals help maintain hydraulic pressure and prevent brake fluid leakage.

• Protects Against Contamination: Replacement dust boots help prevent moisture, dirt, road salt, and debris from reaching the piston and caliper bore.

• Helps Correct Brake Drag: Replacing deteriorated internal components can help address sticking pistons, uneven pad wear, and excessive brake heat when caliper condition is the underlying cause.

Service Note

Carefully inspect the brake caliper body and piston bores before rebuilding. Severe corrosion, scoring, cracks, damaged threads, or other structural damage may make the caliper unsuitable for rebuilding. Always follow the vehicle manufacturer's brake service, fluid, torque, and bleeding procedure