do not press the back button…
Enter your VAT number here and click Verify:
Your details have been verified. VAT number registered to:
,
.
Your order will now be zero rated for VAT purposes. We reserve the right to verify these details after your order request has been made and reinstate VAT if required.
Your VAT details were not recognised or were invalid. Your VAT number must be matched to your Billing Country as specified above. This is currently specified as . You do not need to enter the country code part of your VAT number as this has already been selected in your billing address details above.
The VAT number checking service is currently offline. Please supply your VAT details within the comments or special instructions field below and we will apply a VAT discount after placing your order request.
- Porsche Boxster Spyder / Sypder RS 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 / GT4 RS 718 4.0L
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
Kit contains
4 x 34mm caliper pistons
4 x 34mm piston dust caps
4 x 34mm piston seals
2 x bleed covers
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.
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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
718989234
The product you are viewing cross references to these numbers
Price is each seal
**Please check the piston size you need as some callipers take two different sizes.
Fits:
Various Models
Price is each seal
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
1055955
The product you are viewing cross references to these numbers
Price is for each Piston
*** Please check the piston diameter you need as some calipers take two different sizes. Sizes shown are the piston outer diameter (OD), The height of the pistons is 32mm
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
1055955
The product you are viewing cross references to these numbers
DOT 4
Having an extremely high boiling point and lower viscosity than required, it meets and greatly exceeds regulatory standards. Also suitable for vehicles with ABS.
Vapour Lock formation
This sort of habit leaves room for the Vapour Lock, the formation of vapour bubbles due to boiling of the brake fluid that replace the normal fluid and are compressed, thereby sending the brake pedal to its fill stoke (spongy pedal). The origin is incident in the porosity of the tubes that make up the braking circuit, which in time draw moisture into the fluid, drastically reducing the boiling point. The result is a reduced braking efficiency.
Brembo Premium Brake Fluid
Brembo Premium brake fluids have a higher boiling point that exceeds the standard, thus offering superior resistance to the Vapour Lock and ensuring braking efficiency even at low temperatures. With high anti-corrosion properties and resistance to oxidation, Brembo brake fluid also allows for long-term unaltered chemical/physical characteristics of the fluid in operating circuit; therefore, preserving its integrity.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
L040
The product you are viewing cross references to these numbers