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Porsche > Cayman 718C (982C) 2017>> > Brakes >

Caliper Seals |Pistons

Caliper Seals |Pistons

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DISPLAYING 17 to 18 (of 18 products)
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Titanium brake caliper piston puck sets. Porsche 992.1 GT3 RS - 9GT615424A, 9GT615423A, 9GT615423C, 9GT615424C, 9GT615123L, 9GT615124L, 9GT615123K, 9GT615124K
8
Titanium brake caliper piston puck sets. Porsche 992.1 GT3 RS
9GT61512
Product Information
Product Information
Titanium brake caliper piston pucks - replacement for the original ceramic type
Sold as a set for 2 calipers for PCCB and steel brake discs

Fits:
  • Porsche 992.1 GT3 RS 4.0L 2022-24
  • Porsche Cayman GT4 718 4.0L 2017>>


Don't compromise on safety or performance – choose our titanium pucks for enhanced braking reliability and a smoother, more responsive driving experience on and off the track. Our pucks will ensure that your braking system can handle even the most demanding race conditions, giving you the confidence to push your Porsche to the limit.

The Problem
Many owners, drivers and enthusiasts of the Porsche GT3 RS, who visit race tracks with this model in 80% of cases, are facing issues with the braking system. Whether the brakes are equipped with factory steel or PCCB calipers, ceramic pucks are mounted on the pistons as a thermal barrier, preventing excessive heat transfer from the pads to the pistons and fluid. These pucks help reduce heat buildup, but due to the extreme temperatures and repeated heat cycles from aggressive or prolonged braking on the track, the ceramic pucks can become brittle and break down. Initial signs of this failure include cracking or chipping. Missing or damaged ceramic pucks can lead to diminished braking performance and increased heat transfer to the fluid. If a significant number of pucks fail, it could result in serious and dangerous braking issues. This issue is frequently overlooked during brake pad replacements, as technicians are typically unaware of it and fail to inspect for it.

The Solution 
Gold Leaf pucks are made of annealed aerospace titanium Ti-6Al-4V (Grade 5). They offer similar thermal properties to ceramic pucks but are much more durable under repeated heat cycles. While they are costly, they effectively maintain a thermal barrier, unlike stainless steel, which allows heat to transfer to the fluid.

Key Benefits
Lower weight: Titanium is lighter than ceramic, which can reduce the overall weight of the braking system. This results in quicker response times for acceleration, braking, and direction changes, especially noticeable on the track.
Higher strength: Titanium is stronger and more wear-resistant, meaning it can withstand higher temperatures and greater forces without deforming. This is particularly beneficial on the track, where braking temperatures can reach extreme levels.

Installation
Installing of the Gold Leaf Piston Pucks: 1. Remove the wheels. 2. Unplug the brake lines and remove the calipers. 3. Remove brake pistons from the calipers. 4. Unscrew the original ceramic pucks and screw in the new titanium pucks. Be careful regarding the piston surface. We recommend using Loctite on the screw threads. 5. Insert brake pistons back in their caliper sleeves. 6. Install the calipers and brake lines, bleed the calipers with new braking fluid and install the wheels. 



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9GT61512
9GT615424A
9GT615423A
9GT615423C
9GT615424C
9GT615123L
9GT615124L
9GT615123K
9GT615124K

The product you are viewing cross references to these numbers
Titanium replacement pistons for brembo calipers - 1055955, 105595528, 105595530, 105595532, 105595534, 105595536, 105595538, 105595540, 105595544
1
Titanium replacement pistons for brembo calipers
SL-BKP-
Product Information
Product Information
Titanium Alloy Replacement Piston for Brembo Calipers

silverlake

Titanium is a very poor conductor of heat, and reduces the heat transfer by approximately 90%
The standard aluminum brake pistons are light but very heat conductive which means the thermal energy from the brake pad transfers easily to the brake fluid.

The castellated contact edge promotes airflow into the piston cavity and reduces the contact surface with the pad and thus further decreases heat transfer to the brake fluid.

We designed using advanced engineering simulations (FEA) to achieve the same weight than their aluminum counterparts while maintaining superior structural strength.

As opposed to stainless steel pistons, our titanium alloy pieces weigh the same as the original aluminum pistons; and they will never corrode and damage the seals causing the caliper to leak.

Price is per pair of pistons

**Please check the piston diameter you need as some calipers take two different sizes. Sizes shown are the piston outer diameter (OD)

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

SL-BKP-
1055955
105595528
105595530
105595532
105595534
105595536
105595538
105595540
105595544

The product you are viewing cross references to these numbers
DISPLAYING 17 to 18 (of 18 products)
1 2
About Caliper Seals |Pistons

Porsche Caliper Seals & Pistons | Design911 Precision Hydraulic Components for Restoring Braking Power & Reliability

Caliper seals and pistons are vital hydraulic components in your Porsche’s braking system, ensuring smooth, consistent, and powerful brake performance. The piston transfers hydraulic pressure to the brake pads, while the seals maintain fluid integrity, preventing leaks and contamination. Over time, wear, heat, and moisture can compromise these parts — reducing braking efficiency and safety. Replacing caliper seals and pistons is essential for maintaining consistent pressure, pedal feel, and reliability.

At Design911, we offer a comprehensive range of caliper seals and pistons, engineered for precision fitment and durability. Each component is crafted from high-grade materials designed to resist corrosion, heat, and hydraulic fluid degradation. Perfect for servicing, performance upgrades, or complete caliper restoration, these components restore your Porsche’s braking response and ensure long-term dependability.

What Do Caliper Seals & Pistons Do?

These two components work together to create and maintain the hydraulic pressure that powers your Porsche’s braking system.

Core Functions:
• Pistons convert hydraulic pressure into clamping force against the brake pads.
• Seals prevent brake fluid leakage and maintain system pressure.
• Ensure smooth piston retraction for consistent pad contact.
• Protect against contaminants, moisture, and corrosion.
• Maintain balanced braking and pedal feel across all wheels.

High-quality seals and pistons ensure your Porsche delivers the stopping power, responsiveness, and control expected of its engineering pedigree.

Why Do Caliper Seals & Pistons Fail or Degrade?

Due to their exposure to heat, pressure, and environmental factors, these parts naturally deteriorate over time — especially in performance or high-mileage vehicles.

Common Causes of Failure Include:
• Seal wear or cracking from age and fluid degradation.
• Corrosion or pitting on pistons caused by moisture ingress.
• Brake fluid contamination leading to swelling or hardening.
• Heat damage from aggressive braking or track use.
• Improper installation or infrequent brake servicing.

When seals or pistons fail, symptoms such as fluid leaks, uneven braking, or sticking calipers can occur — compromising braking safety and performance.

Why Replace or Upgrade Your Porsche Caliper Seals & Pistons?

Replacing these components restores full hydraulic integrity and smooth brake operation. Design911’s premium-grade seals and pistons are designed for longevity, precision, and compatibility across Porsche models — ensuring reliability under road or track conditions.

Key Benefits:
• Restores consistent braking pressure and pedal feel.
• Prevents leaks and contamination in the hydraulic system.
• Improves caliper response and even brake pad wear.
• Manufactured from corrosion- and heat-resistant materials.
• Direct-fit design for fast, accurate installation.
• Ideal for restorations, rebuilds, or performance upgrades.

Design911’s Porsche caliper seals and pistons deliver unmatched performance and durability, helping your Porsche maintain the sharp braking response it was built for.

Highlights

• High-quality Porsche caliper seals and pistons for all models.
• Precision-engineered for hydraulic efficiency and longevity.
• Resistant to corrosion, high heat, and fluid degradation.
• Essential for brake caliper rebuilds or restorations.
• Improves pedal feel and braking consistency.
• Perfect for classic and modern Porsche vehicles.

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