SPORTS Brake Disc

9m Floating Front Brake Disc Upgrade – 350 x 34mm 
Sold as a pair

Take the braking performance to the next level with the 9m Floating Front Brake Disc Upgrade, engineered for drivers who demand exceptional stopping power, improved heat management and long-term durability. Designed as a premium replacement for the factory front brake discs, this two-piece floating slotted brake disc assembly combines advanced materials with precision engineering to deliver consistent braking performance on both road and track.

Fits:

• Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
• Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
• Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
• Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
• Porsche Cayman S 718 2.5L Manual (350 Bhp)
• Porsche Cayman S 718 2.5L PDK (350 Bhp)
• Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
• Porsche Cayman GTS 718 2.5L PDK (365 Bhp)

Each assembly consists of a CNC-machined aluminium hat paired with a high-carbon alloy cast iron floating rotor ring, reducing unsprung weight while allowing the braking surface to expand and contract naturally under extreme temperatures. This floating design helps minimise stress, reduces the risk of disc distortion and maintains a more consistent pedal feel during repeated heavy braking.

Manufactured using CM-250 formulated high-carbon alloy cast iron, the rotor rings are heat treated to relieve internal stresses before machining, improving strength, stability and resistance to cracking or vibration. Combined with 72 precision-engineered internal cooling vanes, these discs deliver outstanding thermal efficiency, allowing heat to dissipate rapidly and helping maintain braking performance under sustained high-load conditions.

The result is a brake disc package that offers exceptional reliability, improved driver confidence and the performance expected from a Porsche developed for enthusiastic road driving and occasional circuit use.

What Does a Two-Piece Floating Brake Disc Do?

A floating brake disc separates the braking surface from the mounting hat, allowing each component to perform its specific function more efficiently.

Key advantages include:

• Allows the rotor ring to expand independently during heavy braking.
• Reduces thermal stress transferred into the hub assembly.
• Minimises the risk of brake judder and disc distortion.
• Improves heat dissipation.
• Reduces unsprung weight.
• Delivers more consistent pedal feel.
• Enhances braking performance during repeated high-speed stops.

Compared with conventional one-piece brake discs, floating assemblies provide improved thermal management and greater durability under demanding driving conditions.

Why Upgrade to the 9m Floating Brake Disc Assembly?

The 9m floating brake disc upgrade has been developed using premium materials and precision manufacturing processes to maximise braking efficiency.

Benefits include:

• Two-piece floating brake disc design.
• Slotted braking surface for improved pad cleaning and gas evacuation.
• 72 internal cooling vanes for exceptional airflow.
• CM-250 formulated high-carbon cast iron rotor rings.
• Heat-treated rotors to reduce internal stresses.
• CNC-machined 6061-T6 aluminium hats.
• Hard anodised hat assemblies for corrosion resistance.
• Reduced unsprung weight.
• Improved resistance to thermal distortion.
• Consistent braking performance under repeated heavy use.
• Ideal for spirited road driving, fast road builds and track days.

Premium Engineering

Every component has been carefully engineered to deliver exceptional durability and performance.

Rotor Rings

The rotor rings are manufactured from CM-250 high-carbon alloy cast iron, providing:

• Outstanding high-temperature strength.
• Excellent wear resistance.
• Improved thermal stability.
• Enhanced braking consistency.
• Long service life.

Following casting, each rotor is heat treated to relieve internal stress, helping prevent deformation and vibration throughout its operating life.

Aluminium Hat Assemblies

The centre hats are precision CNC machined from 6061-T6 aluminium before receiving a durable hard anodised finish.

Benefits include:

• Lightweight construction.
• Excellent dimensional accuracy.
• Corrosion resistance.
• Reduced unsprung mass.
• High structural rigidity.

Slotted Brake Disc Design

The precision-machined slots help maintain optimum braking performance by:

• Clearing brake dust from the pad surface.
• Allowing gases generated under heavy braking to escape.
• Maintaining consistent pad contact.
• Improving wet-weather braking response.
• Enhancing pedal consistency.

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

9M71825GTS

The product you are viewing cross references to these numbers

9m Floating Rear Brake Disc Upgrade – 350 x 20mm
Sold as a pair

Take the braking performance of your Porsche to the next level with the Ninemeister 9m Floating Rear Brake Disc Upgrade. Featuring a 350 x 20mm two-piece floating slotted brake disc assembly, this premium upgrade has been developed to deliver exceptional braking consistency, superior cooling performance and reduced unsprung weight for fast road and track-focused driving.

Fits:

• Porsche Boxster 981 2.7L 2012-16
• Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
• Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
• Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
• Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
• Porsche Cayman 2.7L 981 2013-16
• Porsche Cayman 718 2.0L Manual (300 Bhp)
• Porsche Cayman 718 2.0L PDK (300 Bhp)
• Porsche Cayman T 718 2.0L Manual (300 Bhp)
• Porsche Cayman T 718 2.0L PDK (300 Bhp)

Each assembly combines a lightweight CNC-machined aluminium hat with a precision-engineered high carbon cast iron rotor, creating a floating brake disc capable of expanding independently under extreme braking temperatures. This floating design helps minimise internal stress within the rotor, reducing the risk of distortion, vibration and brake judder while maintaining consistent pedal feel during repeated heavy braking.

Manufactured using CM-250 formulated high carbon alloy cast iron, the rotor delivers exceptional thermal stability, outstanding wear resistance and excellent braking performance under demanding conditions. Combined with 72 internal cooling vanes, heat is dissipated rapidly to minimise brake fade and maximise confidence behind the wheel.

Designed for enthusiasts who demand more from their Porsche, the Ninemeister 9m floating brake disc upgrade provides a significant improvement in braking performance without compromising everyday drivability.

What Are the Benefits of a Two-Piece Floating Brake Disc?

Unlike conventional one-piece brake discs, a two-piece floating assembly separates the braking surface from the mounting hat.

This advanced design offers numerous advantages:

• Allows the cast iron rotor to expand independently under heat.
• Reduces thermal stress within the braking surface.
• Minimises the likelihood of disc warping.
• Helps eliminate brake vibration and judder.
• Improves braking consistency.
• Reduces unsprung and rotating mass.
• Enhances suspension performance.
• Increases service life during demanding driving conditions.

This floating design is widely used in motorsport and high-performance road applications due to its ability to maintain braking performance under extreme temperatures.

Advanced Rotor Technology

The Ninemeister 9m rotor has been developed using premium materials and precision manufacturing processes.

Each rotor features:

• 72 internal cooling vanes for maximum airflow.
  
• CM-250 formulated high carbon alloy cast iron for exceptional strength and thermal stability.
  
• Heat-treated rotor rings to relieve internal stresses.
• Reduced susceptibility to thermal distortion.
• Improved resistance to vibration.
• Precision-machined braking surfaces for consistent pad contact.
• Slotted road pattern to continuously clean the brake pad surface and assist with gas and dust evacuation.

The result is predictable braking performance with outstanding durability during repeated heavy braking.

Lightweight CNC Aluminium Hat Assemblies

Each floating disc incorporates a lightweight aluminium hat manufactured from 6061-T6 aerospace-grade aluminium.

Every hat is:

• CNC machined for exceptional accuracy.
• Hard anodised for corrosion protection.
• Lightweight to reduce rotating mass.
• Manufactured to precise tolerances.
• Engineered for reliable long-term performance.

The reduction in unsprung weight allows the suspension to react more efficiently, improving handling, ride quality and steering response.

Why Upgrade Your Rear Brake Discs?

High-performance driving generates significant braking temperatures that can challenge conventional brake discs.

Upgrading to the Ninemeister 9m floating brake discs offers:

• Improved heat dissipation.
• Reduced brake fade.
• More consistent braking performance.
• Reduced brake judder.
• Greater resistance to thermal cracking.
• Improved pedal feel. Lower unsprung weight.
• Enhanced confidence during spirited road driving and track use.

These advantages become particularly noticeable during repeated heavy braking where consistent performance is essential.

Benefits

• Superior braking consistency.
• Excellent thermal management.
• Increased resistance to brake fade.
• Reduced rotor distortion.
• Reduced brake vibration.
• Improved suspension response through lower unsprung weight.
• Outstanding durability.
• Perfect for fast road and occasional track use.       

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

9M9812771820

The product you are viewing cross references to these numbers