- Big Brake Kit
- Alcon Replacement Ring
- Brake Rotors
- Competition Kit
- porsche
- 991
- replacement
- floating
- rotors
Product Features
Authorized Pro-System Dealer
Summary:
Upgrade your 2013-2019 Porsche 991's (GT3, Turbo, or GT3 Cup) performance with our replacement floating rotors. Expertly machined in Mooresville, NC with specially formulated grey cast iron for ultimate thermal stability, friction, and heat transfer. Pre-bedded and engineered with sufficient float for precise expansion. Plated round bobbins and aircraft grade aluminum hats for extended life.
Sizing:
GT3 Cup Front: 380mmx32mm x 72 vanes.
GT3 Cup Rear: 380mmx30mm x 72 vanes.
GT3/Turbo Front: 380mmx34mm x 48 vanes.
GT3/Turbo Rear: 380mmx30mm x 48 vanes.
For use in both performance street and competition cars. Includes pair of fully assembled rotors, hats, and hardware.
Description:

Used at the highest levels of motorsport, the rotors have been used by many demanding motorsports teams. They are developed and tested in competition in series like IMSA, NASCAR, Indy Car, Grand-Am and others. These are not over-the-counter replacement rotors, rather they are a highly engineered system to achieve the best in braking performance and reliability.
These are pre-bedded before they reach out. Brake bedding ensures all our rotors and pads are ready to go and require no further break-in beyond warming up during first use. This eliminates wasted track time and the chance of brake shudder.
We have two fully automated, computer-controlled electric brake dynos that are used for bedding, testing and development of brake parts. The automated bedding sequence uses the correct inertia and cycle time for the job to ensure you are getting the highest quality parts available and that they are the same specification time after time. Drivers and teams have more than enough to be concerned with during a race weekend or a private test day. Using this service means you do not have to waste valuable track time or money bedding brakes.
Recommended Pads:

SKU: ROX.101313
Yes, some general automotive retailers and online marketplaces may list Alcon brake kits or individual components. However, Alcon brake systems are engineered, vehicle-specific systems, not commodity parts.
When purchased from Alconkits.com, you are buying directly from a specialist Alcon distributor with deep application knowledge, fitment validation experience, and long-term service support. This ensures you receive the correct configuration, pad compound guidance, wheel-clearance assistance, and ongoing support throughout the life of the brakes.
Alconkits.com specializes exclusively in Alcon brake systems. We are not a general parts reseller.
When you buy from Alconkits.com, you get:
Most marketplaces can sell a box. We support the entire brake system lifecycle for as long as you own it.
Alcon brake kits are engineered systems, not assembled collections of parts.
Each kit is designed with:
This results in more consistent pedal feel, better heat management, and superior durability compared to budget or generic big brake kits.
No. Alcon brake kits are application-specific.
Vehicle weight, intended use, rotor size, caliper configuration, and pad compound all matter—especially on high-performance cars and trucks. Selecting the wrong configuration or pad compound can reduce braking performance, increase noise, or accelerate wear.
This is why buying from the specialist distributor, Alconkits.com, matters.
Manufactured by Pro-System, we recommend this as being suitable for the following driving styles:
This is THE question to ask. Alcon brake systems are fully serviceable.
When you purchase from Alconkits.com, you have long-term access to:
This is a major advantage over marketplace sellers who may not support the product after the sale. We know what fits, we stock it, and we don't sell you parts you don't need.
Alcon brake kits are built to deliver higher performance, durability, and consistency than OEM or budget aftermarket brakes.
The cost reflects:
This is not a cosmetic upgrade—it is a functional braking system designed for demanding use.
Yes. Alconkits.com is an authorized and specialist Alcon distributor with one of the largest Alcon-focused catalogs and knowledge bases available.
Our team has extensive experience supporting Alcon brake systems across trucks, SUVs, performance cars, and specialized applications.
Alconkits.com provides lifetime technical support for Alcon brake systems purchased through us.
Our support resources include:
Brakes are a critical system—our goal is to make sure you get it right.
We make it easy - connect with us the way its convenient for you.