Rear Brake Caliper Piston and Seal Kit. Porsche 993 C4S / turbo / GT2  ❭  993910228

Rear Brake Caliper Piston and Seal Kit 
1 kit per caliper - 2 required per car

Complete rear brake caliper piston and seal kit designed specifically for Porsche 993 turbo and Carrera 4S models. This all-in-one rebuild kit includes pistons and sealing components required to restore full braking performance and reliability.

Fits:

• Porsche 993 (911) C4S 1994-97
• Porsche 993 (911) TURBO 1994-96
• Porsche 993 (911) GT2 1994-97

Kit contains
4 x 28mm caliper pistons
4 x 28mm piston dust caps
4 x 28mm piston seals
2 x bleed nipples and covers

Manufactured to OEM standards, this kit ensures proper hydraulic sealing, smooth piston operation, and long-term durability. Ideal for maintenance, restoration, or professional brake system rebuilds.

Key Features

• Rear brake caliper piston and seal kit 
• Designed for Porsche 993 turbo & Carrera 4S rear calipers
• Complete rebuild solution with pistons and seals
• Maintains hydraulic pressure and performance
• OEM-quality materials for durability and reliability

Function and Purpose

This complete kit is essential for restoring rear brake caliper function.

It helps to:
• Replace worn or corroded pistons
• Restore hydraulic sealing within the caliper
• Maintain consistent braking pressure
• Ensure smooth and even piston movement
• Protect internal components from contamination

Why Replace Pistons & Seals Together

Brake components degrade over time due to heat, pressure, and corrosion.

Common issues include:
• Brake fluid leaks
• Seized or sticking pistons
• Uneven braking performance
• Corrosion on piston surfaces
• Reduced braking efficiency

Replacing both pistons and seals ensures a complete and reliable repair.