Girodisc Titanium Brake Pad Shields for Porsche 991, 992, GT4 Front
Girodisc Girodisc Titanium Brake Pad Shields for Porsche 991, 992, GT4 Front $110.00
Girodisc Titanium Brake Pad Shields FITS: Porsche 991, 992, GT4 Front The problem of brake fluid boiling is due to heat transferring from the rotors and pads directly into the fluid through the caliper pistons. When brake fluid boils, it releases air that is normally part of the molecular structure of the fluid. This air is compressible, of course, and the brake pedal goes to the floor instead of moving the caliper pistons. Production cars tend to suffer from this on track days because they don't have the extensive cooling ducts and exotic brake materials found on race cars. Race-only brake calipers generally come with titanium caliper pistons for one reason: titanium has low thermal conductivity. This means it's very bad at transferring heat, which is good if you're trying to keep your brake fluid from boiling. Here's a comparison of materials and their relative thermal conductivity ratings (lower is better): Titanium 6AL-4V = 6.7 W/mk Steel = 52 W/mk Aluminum = 130 W/mk Most fixed calipers use aluminum pistons which are, unfortunately, excellent at transferring braking heat to your brake fluid. Our solution is to place Girodisc's thin titanium shims between the brake pad and the caliper pistons. This helps prevent braking heat from transferring into the pistons and, thus, into the fluid. For cars that are going to see hard or multiple track days, these shims are affordable protection from losing your brake pedal at the wrong time and making your track day very expensive. Water jet cut to exact size; no cutting, grinding, or swearing involved. Price is per axle (four shims)
PFC Porsche 991 GT3 Cup - GT4 Clubsport Front Replacement Slotted Disc
Performance Friction PFC Porsche 991 GT3 Cup - GT4 Clubsport Front Replacement Slotted Disc from $559.95
PFC Porsche 991 GT3 Cup / GT4 Clubsport Front Slotted Replacement Disc 380mm diameter and thickness is 32mmBrake disc only, does not include brake bell. Slotted V2/V3 disc 991GT3 Porsche 991 GT3 Cup (sprint). Not for use in official Porsche Carrera Cup championships.Porsche Cayman GT4 Clubsport (FIA GT4 homologated) GT4CS Part numbers replace 380.32.0054.451/461
PFC Porsche 991 GT3 Cup - GT4 Clubsport Rear Replacement Slotted Disc
Performance Friction PFC Porsche 991 GT3 Cup - GT4 Clubsport Rear Replacement Slotted Disc from $559.95
PFC Porsche 991 GT3 Cup / GT4 Clubsport Rear Slotted Replacement Disc 380mm diameter and thickness is 30mmThe radial depth is 47mmBrake disc only, does not include brake bell Slotted V2/V3 disc 991GT3 Porsche 991 GT3 Cup (sprint). Not for use in official Porsche Carrera Cup championships.Porsche Cayman GT4 Clubsport (FIA GT4 homologated) GT4CS Part numbers replace: 380.30.0047.451 380.30.0047.461
Girodisc Titanium Brake Pad Shields for Porsche 991, 992, GT4 Rear
Girodisc Girodisc Titanium Brake Pad Shields for Porsche 991, 992, GT4 Rear $90.00
Girodisc Titanium Brake Pad Shields FITS: Porsche 991, 992, GT4 Rear The problem of brake fluid boiling is due to heat transferring from the rotors and pads directly into the fluid through the caliper pistons. When brake fluid boils, it releases air that is normally part of the molecular structure of the fluid. This air is compressible, of course, and the brake pedal goes to the floor instead of moving the caliper pistons. Production cars tend to suffer from this on track days because they don't have the extensive cooling ducts and exotic brake materials found on race cars. Race-only brake calipers generally come with titanium caliper pistons for one reason: titanium has low thermal conductivity. This means it's very bad at transferring heat, which is good if you're trying to keep your brake fluid from boiling. Here's a comparison of materials and their relative thermal conductivity ratings (lower is better): Titanium 6AL-4V = 6.7 W/mk Steel = 52 W/mk Aluminum = 130 W/mk Most fixed calipers use aluminum pistons which are, unfortunately, excellent at transferring braking heat to your brake fluid. Our solution is to place Girodisc's thin titanium shims between the brake pad and the caliper pistons. This helps prevent braking heat from transferring into the pistons and, thus, into the fluid. For cars that are going to see hard or multiple track days, these shims are affordable protection from losing your brake pedal at the wrong time and making your track day very expensive. Water jet cut to exact size; no cutting, grinding, or swearing involved. Price is per axle (four shims)
Ferodo FCP4664G DS3.12 Brake Pads
Ferodo Ferodo FCP4664G DS3.12 Brake Pads from $572.63
Ferodo FCP4664G DS3.12 Brake Pads *Designed for use with iron discs only, not for carbon ceramic discs. Replacement pads for OEM Porsche calipers. Fitments include GT2, GT3, GT3RS, GT4 Compound: DS3.12 DS3.12 Released in 2019, the DS3.12 is the latest evolution in Ferodo's incredible DS line. Sports cars today have more of everything: more horsepower, more sophisticated aero, higher curb weights, and stickier tires. These attributes place serious demands on a vehicle's brake system. The Ferodo DS3.12 is the modern pad compound designed from the start to explicitly handle those demands. Out of all the pad compounds we've ever tested , from all manufacturers, the DS3.12 shows the flattest torque curve across the broadest temperature range. That means that on every turn, on every track you drive, on every lap, your brake pedal is going to feel almost exactly the same, providing tremendous consistency and repeatability. The DS3.12 has a higher mu than Ferodo's other compounds, so not as much leg pressure is required to initiate the desired response. It is also unfadable, showing no drop in performance at any temp your brakes will ever see. In dyno testing, the DS3.12 has shown superior wear rates to the other Ferodo compounds, while remaining kind to the discs. We believe the DS3.12 will become the gold standard to which other race compounds will be compared.
Ferodo FCP4665G DS3.12 Brake Pads
Ferodo Ferodo FCP4665G DS3.12 Brake Pads from $563.25
Ferodo FCP4665G DS3.12 Brake Pads *Designed for use with iron discs only, not for carbon ceramic discs. Replacement pads for OEM Porsche calipers. Fitments include GT2, GT3, GT3RS, GT4 Compound: DS3.12 DS3.12 Released in 2019, the DS3.12 is the latest evolution in Ferodo's incredible DS line. Sports cars today have more of everything: more horsepower, more sophisticated aero, higher curb weights, and stickier tires. These attributes place serious demands on a vehicle's brake system. The Ferodo DS3.12 is the modern pad compound designed from the start to explicitly handle those demands. Out of all the pad compounds we've ever tested , from all manufacturers, the DS3.12 shows the flattest torque curve across the broadest temperature range. That means that on every turn, on every track you drive, on every lap, your brake pedal is going to feel almost exactly the same, providing tremendous consistency and repeatability. The DS3.12 has a higher mu than Ferodo's other compounds, so not as much leg pressure is required to initiate the desired response. It is also unfadable, showing no drop in performance at any temp your brakes will ever see. In dyno testing, the DS3.12 has shown superior wear rates to the other Ferodo compounds, while remaining kind to the discs. We believe the DS3.12 will become the gold standard to which other race compounds will be compared.

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