Rear Brake Caliper Piston and Seal Kit 44mm. Porsche 981 / 718 GT4 / 718 Spyder / 991 GT3 / 997 GT3 / GT2 / turbo  ❭  718989234

Rear Brake Caliper Piston & Seal Kit - 4 Piston 34mm Rear Calipers
1 kit per caliper - 2 required per car

High-quality rear brake caliper piston and seal kit designed for Porsche 4 piston rear brake calipers with 34mm pistons. This complete rebuild kit restores braking performance, hydraulic sealing, and smooth piston operation on high-performance Porsche models.

Fits:

• Porsche Boxster Spyder 718 4.0L 01/2019>>
• Porsche 997 MK1 TURBO 2007-09
• Porsche 997 MK1 GT3 2007-09
• Porsche 997 MK1 GT2 2007-09
• Porsche 997 MKII GT3 2010-11
• Porsche 997 MKII Turbo 2010-13
• Porsche 997 MKII GT2 RS 2011-13
• Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
• Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
• Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
• Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
• Porsche Cayman GT4 3.8L 2015-16
• Porsche Cayman GT4 718 4.0L 
  

Manufactured to OEM specifications, these components ensure precise fitment, excellent durability, and reliable braking performance. Ideal for routine maintenance, brake system servicing, or performance rebuilds on Porsche GT and turbo models.

Kit contains
4 x 34mm caliper pistons
4 x 34mm piston dust caps
4 x 34mm piston seals
2 x bleed covers

Please check piston diameters before ordering

 Key Features

• Rear brake caliper piston and seal kit
• Designed for 4 piston rear brake calipers
• Suitable for 34mm pistons
• OEM-quality materials for reliability and durability
• Restores braking performance and hydraulic sealing
• Ideal for brake caliper rebuilds and maintenance

Function and Purpose

This kit is essential for restoring rear brake caliper operation.

It helps to:
• Replace worn or corroded caliper pistons
• Restore hydraulic sealing and pressure retention
• Maintain smooth piston movement
• Protect against dirt and moisture contamination
• Support consistent braking performance

Why Replace Brake Pistons & Seals?

Brake components wear over time due to heat, pressure, and contamination.

Common issues include:
• Brake fluid leaks
• Corroded or sticking pistons
• Uneven braking performance
• Reduced braking efficiency
• Damaged dust caps and seals

Replacing pistons and seals together restores braking reliability, safety, and caliper performance.