
Girodisc
A2-266 Girodisc 2pc REAR Brake Rotors GT4 ClubSport
$1,750.00
This Girodisc system is a 380mm two-piece steel rotor and aluminum hat combination, a direct-replacement upgrade for the one-piece OEM GT4 Clubsport steel brakes. The A2-266 will bolt directly to the GT4 ClubSport and work perfectly with your OEM calipers. There are two main reasons for replacing your OEM rotors: first, the Girodisc rotors are designed to shed heat more effectively than the original rotors; second, the slotted Girodisc A2-266 will far outlast the OEM drilled rotors. When subjected to intense heat in a racing or track-day environment, the drilled holes in the OEM rotors originate cracks which can lead to rotor failure. When paired with the Girodisc A1-266 front rotors, your factory brake bias and ABS efficiency are maintained.
When used with Pagid or PFC performance brake pads, and Competition Motorsport RF1 brake fluid (also available from CompetitionMotorsport.com), you have an amazing solution to overheating, cracking and warping rotors.
The central hat section of the disc is made from 6061-T6 aircraft specification aluminum. The disc is manufactured from cast iron which is constructed in the USA and is made to the same specification with the same material used by professional racing organizations. The rotors curved vane design was developed in racing and acts as a centrifugal pump to force cooling air through the disc.
The rotor and hat mount together through a floating mount system which utilizes eight to ten high strength alloy steel drive pins manufactured by Girodisc in the USA to our own specifications and are cadmium plated for corrosion resistance. The alloy drive pins transfer the load from the brake action while maintaining the axial and radial float between the disc rotor and hat. The pins are secured by Grade 12 cap screws with hardened washers and mounted with anti-noise spring washers to allow for heat expansion while eliminating the rattle and noise associated with floating rotors.
The two-piece Girodisc design allows for rotor only replacement as well to minimize future replacement costs and deliver outstanding performance and cooling.
Sold/priced per pair.

Girodisc
A1-266 Girodisc 2pc Front Brake Rotors for Porsche Cayman GT4 Clubsport
$1,750.00
A1-266 Girodisc Two-Piece 380mm Front Brake Rotors
FITMENT: Porsche Cayman GT4 Clubsport, Front
This Girodisc system is a 380mm two-piece steel rotor and aluminum hat combination, a direct-replacement upgrade for the one-piece OEM Cayman GT4 Clubsport steel brakes. The Girodisc A1-266 will bolt directly to your Porsche GT4 Clubsport and will work perfectly with your OEM calipers.
There are two main reasons for replacing your OEM rotors: first, the Girodisc rotors are designed to shed heat more effectively than the original rotors; second, the slotted Girodisc A1-266 will far outlast the OEM drilled rotors. When subjected to intense heat in a racing or track-day environment, the drilled holes in the OEM rotors form cracks which can lead to rotor failure. When paired with the Girodisc A2-266 rear rotors, your factory brake bias and ABS efficiency are maintained.
When used with Pagid or PFC performance brake pads and CMS RF-1 brake fluid (available from Competition Motorsport), you have an amazing solution to overheating, cracking and warping rotors.
The central hat section of each Girodisc is made from 6061-T6 aircraft specification aluminum. The disc is manufactured from cast iron constructed in the USA, made to the same specification with the same material used by professional racing organizations. The rotors' curved vane design was developed in racing and acts as a centrifugal pump to force cooling air through the disc.
The rotor and hat mount together through a floating mount system which utilizes ten high strength alloy steel drive pins manufactured by Girodisc in the USA to their own specifications and are cadmium plated for corrosion resistance. The alloy drive pins transfer the load from the brake action while maintaining the axial and radial float between the disc rotor and hat. The pins are secured by class 12.9 cap screws with hardened washers and mounted with anti-noise spring washers to allow for heat expansion while eliminating the rattle and noise associated with floating rotors.
The two-piece Girodisc design allows for disc-only replacement as well, minimizing future replacement costs and delivering outstanding performance.
Sold/priced per pair.

Pagid
Pagid Racing Brake Pads No. 4928
from $615.32
Pagid 4928 Racing Brake Pads
Compatibility – Will They Fit Your Car? Pagid 4928 Racing Brake Pad (28mm) Fits The Following Vehicles:
Make
Model
Build (Year)
Front
Rear
Porsche
991 GT3 Cup [PFC brakes 28/26 mm]
13 -19
X
Porsche
991 GT3 Cup MR [PFC brakes 28/26 mm]
13 -19
X
Porsche
Cayman GT4 Clubsport [PFC brakes 28/26 mm]
16 -20
X
Porsche
Cayman GT4 MR [PFC brakes 28/26 mm]
16 -20
X
PAGID RSL 29 COMPOUND
Pagid RSL 29 (Yellow) is the world-leading endurance brake pad used by most of the winning teams in motorsport. Although designed primarily for endurance racing, many competitors use this material successfully for sprint and short distance races also. RS29 has also found favor in the growing track day market due to the level of control, good cold performance, long life and low disc wear. PAGID Racing RSL compounds are developed to comply with the latest requirements in endurance racing and meet or surpass all current ecological standards of the automotive industry.
PAGID RSL 1 COMPOUND
Pagid RSL 1 has a high ceramic content with superior thermal insulation and higher heat resistance than metallic pad compounds. They feature excellent pad wear under endurance conditions, excellent rotor life, and are less aggressive than RST pads with excellent brake balance and modulation. RSL 1E and RSL 1 are low metallic resin bonded materials containing steel and aramid fibers RSL 1E is perfect as front axle application for long endurance GT and touring car racing. with very high heat resistance. They maintain a constant friction level over a wide range of temperatures. Their reduced wear rate and disc friendliness make these materials appropriate for endurance races. RSL 1E is further improved in terms of pad life and modulation as well as friction stability at high temperatures and pad life. As a benefit, RSL 1E provides the lowest pad wear rate in the PAGID Racing portfolio for highly thermally loaded applications. PAGID Racing RSL compounds are developed to comply with the latest requirements in endurance racing and meet or surpass all current ecological standards of the automotive industry.
PAGID RSL2 / RSL2E COMPOUND
RSL 2E and RSL 2 are low metallic resin bonded materials containing steel and aramid fibers with characteristics often also used in sprint races. APPLICATION RANGE RSL 2E RSL 2E is perfect as a front axle application for long endurance GT racing with high cooling efficiency. 16 high heat resistance. They maintain a constant friction level over a wide range of temperatures. Their reduced wear rate and disc friendliness make these materials appropriate for endurance races on applications with high cooling efficiency. RSL 2E is further improved in terms of pad life and modulation, as well as friction stability at high temperatures and pad life with optimized cooling. RSL 2E is perfect as a front axle application for long endurance GT racing with high cooling efficiency.
PAGID RST 1 COMPOUND
Pagid RST 1 is a high-friction, aggressive pad with instant pedal response, quick release, a firm pedal at all temperatures, and a progressive torque curve. Suitable for applications with high down-force and/or very high grip. RST 1 has a very high friction level and high temperature resistance. It is a semi-metallic resin bonded material containing steel fibers. Cold friction and initial bite makes this material most appropriate for Rally and NASCAR applications.
PAGID RST 2 COMPOUND
RST 2 and RST 2E are semi-metallic resin bonded materials containing steel fibers. RST 2E 700℃ Cold friction and initial bite make these materials most appropriate for rallying and NASCAR applications. RST 2E is perfect as a front axle application in mid-endurance GT and touring car racing, in the range of 2-6h race duration. Front and rear axle application on rally race cars. Used in tarmac rallying, circuit racing with GT and touring cars and in NASCAR. Also used as rear pad in combination with RST 1 on the front axle. Recommended for GT and touring car racing at tracks where higher temperatures are an issue.
PAGID RST 3 COMPOUND
Pagid RST 3 is a medium-high friction metal-ceramic compound containing steel fibers and is therefore the perfect complement of the RST product family.
RST 3 is exceptional in its low heat conductivity. Ideal for rally tarmac and gravel, GT cars, Touring Cars, prototype circuit racing, formula cars and club racing. It has a wide range of applications due to its combination of bite, friction and controllability.
PAGID RST 5E COMPOUND
Specifically designed and developed for high friction level sprint applications where an extreme thermal stability is demanded. Comes for a variety of different pad shapes established in GT racing front axles, Touring car front axles, rally sports, especially FIA Rally3, Rally2, Rally1, and RX Rallycross categories. Its enhanced fade resistance as well as the highest initial bite and friction level of the PAGID Racing compound portfolio make it suitable for thermally high-loaded applications, and make the RST 5E a top-end sprint equipment in terms of performance. Due to its OTM feature, the generated heat remains in the brake pad and is not transmitted into the brake fluid. RST 5E delivers the ideal balance between maximum performance and modulation.

Performance Friction
PFC Porsche 991 GT3 Cup - GT4 Clubsport Rear Replacement Slotted Disc
from $594.05
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 991 GT3 Cup Car and GT4 Clubsport
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

Performance Friction
PFC Front Replacement Slotted Disc | Porsche 991 GT3 Cup/GT4 Clubsport
from $594.05
PFC Porsche 991 GT3 Cup / GT4 Clubsport Front Slotted Replacement Disc – 380mm
Restore your braking performance with the PFC Front Slotted Replacement Disc, engineered specifically for the Porsche 991 GT3 Cup and Porsche Cayman GT4 Clubsport with PFC front rotors. This is a set of two replacement discs (rotor rings) only, and does not include the aluminum rotor hats.
Designed for uncompromising track performance, this 380mm V2/V3 slotted disc restores the exceptional stopping power, durability, and heat management of your PFC front brake rotors.
Precision-Machined for Motorsport Applications
Crafted from high-quality materials and manufactured to exacting motorsport standards, this replacement disc ensures consistent performance under extreme braking conditions. The V2/V3 slotted design enhances pad bite, improves heat dissipation, and reduces the risk of glazing—making it ideal for sprint racing and high-intensity track use.
Key Features:
Optimized Dimensions: 380mm diameter x 32mm thickness for perfect fit and performance.
V2/V3 Slotted Design: Maximizes braking efficiency, heat management, and debris removal.
Direct Replacement: Fits Porsche 991 GT3 Cup (Sprint) and Porsche Cayman GT4 Clubsport (FIA GT4 homologated) models with PFC front slotted two-piece floating rotors.
Track-Focused Performance: Engineered for demanding racing environments.
Disc Only: Brake bell not included.
Compatibility:
Porsche 991 GT3 Cup (Sprint) – Not for use in official Porsche Carrera Cup championships.Porsche Cayman GT4 Clubsport (FIA GT4 homologated) GT4CS
Replaces Part Numbers:
380.32.0054.451
380.32.0054.461
Whether you're chasing podiums or refining your lap times, the PFC Front Slotted Replacement Disc returns the braking performance, reliability, and precision the PFC brake rotors on your Porsche 991 GT3 Cup or GT4 Clubsport demands. Order today from Competition Motorsport for expert service and fast shipping.

Performance Friction
Performance Friction PFC Brake Pads 7968.XX.28.44
from $594.00
Performance Friction PFC Brake Pads 7968.XX.28.44
Race-Ready, High-Performance Brake Pads
Performance Friction Corporation (PFC) Brake Pads 7968.XX.28.44 deliver unmatched stopping power, precision control, and proven durability for sports car racing. Engineered with over 35 years of friction expertise, these premium brake pads are built to perform at the highest levels of motorsport competition.
Each PFC brake pad is manufactured using proprietary friction materials and a zero-compromise design process to ensure consistent, fade-free braking under extreme track conditions. All PFC pad compounds are “Race Ready,” offering a fast and easy bed-in process with rotors for immediate performance gains.
Trusted by Championship Teams Worldwide
PFC Brake Pads are trusted by professional drivers and racing teams competing in some of the world’s most demanding series, including:
NTT IndyCar Series
IMSA
Continental Tire SportsCar Challenge
Porsche Cup Racing
Pirelli World Challenge
...and many more!
Why Choose PFC Brake Pads 7968.XX.28.44?
High-performance, race-proven friction materials
Consistent pedal feel and fade resistance
Quick, reliable burnishing with minimal downtime
Used by winning teams with More Championships than Any Other™
When it comes to professional-grade racing brakes, PFC Brake Pads 7968.XX.28.44 are the performance upgrade your car needs. Join the global community of champions who trust PFC for faster laps, better control, and superior stopping power.
PFC 331 Compound
PFC 331 is the next generation of PFC endurance material. Improved control with ABS, and gentle on discs. The PFC 331 Carbon Metallic ® compound has been developed with higher initial bite than PFC’s renowned PFC 08 endurance compound. PFC 331 has improved release, and continues to offer exceptional control and feel. It boasts low wear rate and exceptional disc conditioning.
PFC 82 Compound: New Front Endurance Compound
PFC 82 is the new standard for PFC endurance compounds. It has gained an immediate following upon release in the endurance sportscar world after its debut win in the 2023 24hrs of Nürburgring. PFC 82 is a degressive pad specifically designed to work together with ABS to give superior control and a smooth release, minimizing lockups. PFC 82 compound has an extremely low wear rate while simultaneously being extra gentle on discs, making this compound the ultimate endurance option. Long distances aren’t this pad’s only strong suit though! With a very high initial bite, this pad can also be used for medium distance sprint applications, where ABS compatibility and a low wear rate are requested. The 82 compound was developed by working closely with experienced teams and drivers to ultimately tailor this pad to have the perfect combination of durability and speed!
PFC 15 Compound
The new generation PFC 15 compound is becoming very popular due to its excellent braking characteristics. Very good in all conditions and excellent when running at high temperatures. Its easy control and release are appreciated by engineers and drivers. Gentle on discs and low wear rate are other excellent virtues. PFC 15 is a great compound winner in different GT3/GT4 races or open wheel categories such as US F3, F3 and Indy Lights. It has better cold bite than 11 or 13. PFC 15 is one of the most complete PFC compounds and works very well with modern racing ABS.
PFC 11 Compound
A new-generation sprint and medium distance friction material, giving you the ultimate in control with superior disc conditioning. Developed from PFC 01 compound with improved bite, modulation, and release characteristics. It is ultra smooth and developed to reduce wheel locking at the end of braking while giving more cold and hot bite than the endurance oriented 08 compound. Brake with confidence; brake with ultimate control and modulation.
Performance Friction PFC 7968 Brake Pad Fitment
Make
Model
Year
Notes
Porsche
911 991 GT3 Cup
2013 - 2019
Front
Porsche
Cayman 981 GT4 Clubsport
2013 - 2019
Front

Performance Friction
Performance Friction PFC Brake Pads 7969.XX.26.44
$530.40
Performance Friction PFC Brake Pads 7969.XX.26.44
Race-Ready, High-Performance Brake Pads
Performance Friction Corporation (PFC) Brake Pads 7969.XX.26.44 deliver unmatched stopping power, precision control, and proven durability for sports car racing. Engineered with over 35 years of friction expertise, these premium brake pads are built to perform at the highest levels of motorsport competition.
Each PFC brake pad is manufactured using proprietary friction materials and a zero-compromise design process to ensure consistent, fade-free braking under extreme track conditions. All PFC pad compounds are “Race Ready,” offering a fast and easy bed-in process with rotors for immediate performance gains.
Trusted by Championship Teams Worldwide
PFC Brake Pads are trusted by professional drivers and racing teams competing in some of the world’s most demanding series, including:
NTT IndyCar Series
IMSA
Continental Tire SportsCar Challenge
Porsche Cup Racing
Pirelli World Challenge
...and many more!
Why Choose PFC Brake Pads 7969.XX.26.44?
High-performance, race-proven friction materials
Consistent pedal feel and fade resistance
Quick, reliable burnishing with minimal downtime
Used by winning teams with More Championships than Any Other™
When it comes to professional-grade racing brakes, PFC Brake Pads 7969.XX.26.44 are the performance upgrade your car needs. Join the global community of champions who trust PFC for faster laps, better control, and superior stopping power.
PFC 11 Compound
A new generation sprint and medium-distance friction compound, PFC 11 gives you the ultimate in control and modulation, along with superior disc conditioning. Developed from PFC's ultra-popular 01 compound with improved bite, modulation, and release characteristics. PFC 11 is ultra-smooth, developed to reduce wheel locking at the end of braking while giving more hot and cold bite than the endurance-oriented 08 compound. Brake with ultimate control, modulation, and confidence.
PFC 332 Compound
332 has been formulated with lower bite and torque for rear applications. With smooth release, the 332 offers excellent stability and control. The 332 has been designed to work with ABS applications, and has exceptionally low wear rates.
Fits the Following Cars (Rear Axle):
Make
Model
Year
Notes
Porsche
911 991 GT3 Cup
2013 - 2019
Rear
Porsche
Cayman 981 GT4 Clubsport
2013 - 2019
Rear

Pagid
Pagid Racing Brake Pads No. 4929
from $420.70
Pagid Racing Brake Pads No. 4929
Fits These Vehicles
Make
Model
Build (Year)
Front
Rear
Porsche
991 GT3 Cup [PFC brakes 28/26 mm]
2013 +
X
Porsche
Cayman GT4 Clubsport [PFC brakes 28/26 mm]
2016 +
X
RSL 29:
The PAGID RS29 (Yellow) is the world-leading endurance brake pad used by most of the winning teams in motorsport. Although designed primarily for endurance racing, many competitors use this material successfully for sprint and short distance races also. RS29 has also found favor in the growing track day market due to the level of control, good cold performance, long life and low disc wear.
RST 1:
The PAGID RST1 has a very high friction level and high temperature resistance. Cold friction and very high initial bite with a progressive torque curve makes this material most appropriate for Rally and NASCAR applications.
RST 3:
The PAGID RST3 is a medium-high friction metal-ceramic compound containing steel and acrylic fibers. It has very low heat conductivity, good initial bite, and excellent modulation and release characteristics. Optimized for rally on tarmac and gravel, GT and Touring cars, and club racing.

AP Racing
AP Racing Radi-CAL R4 Racing Brake Fluid (500 ml)
$41.25
AP Racing Radi-CAL R4 Racing Brake Fluid
Among the Highest Dry Boilings Point On The Market Today
AP Racing Radi-CAL R4 racing brake fluid has an ultra-high typical dry boiling point, at 644º F / 340º C. Radi-CAL R4 racing brake fluid has been designed to perform better than any other product at the extremes of heavy-duty braking in top levels of professional racing.
AP Racing Radi-CAL R4 has outstanding resistance to vapor lock and pedal fade under the most exacting conditions. A higher vapor lock point means a firmer brake pedal at the extremes of brake temperatures. Enhanced lubricity means R4 is a better lubricant than other market-leading racing brake fluids. This helps extend the life of the metal moving parts in your brake system while increasing system efficiency.
Radi-CAL R4 can be mixed with other DOT 3 and DOT 4 racing brake fluid, although for maximum performance your braking system should be thoroughly purged with R4 fluid.
AP Racing Radi-Cal Pro R4 Brake Fluid Details:
Manufacturer: AP Racing
Manufacturer part number: AP-CP7005
DOT rating: DOT 4
Dry Boiling Point: 644º F / 340º C
Wet Boiling Point: 383º F / 195º C
Bottle Size: 500 ml (16.9 fl. oz.)