do not press the back button…
Enter your VAT number here and click Verify:
Your details have been verified. VAT number registered to:
,
.
Your order will now be zero rated for VAT purposes. We reserve the right to verify these details after your order request has been made and reinstate VAT if required.
Your VAT details were not recognised or were invalid. Your VAT number must be matched to your Billing Country as specified above. This is currently specified as . You do not need to enter the country code part of your VAT number as this has already been selected in your billing address details above.
The VAT number checking service is currently offline. Please supply your VAT details within the comments or special instructions field below and we will apply a VAT discount after placing your order request.
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII GT2 RS 2011-13
Two-Piece Floating Front Brake Disc – 350 x 34mm
Sold as a pair
High-performance two-piece floating front brake disc upgrade
for Porsche 996.2 GT3, GT3 RS and GT2, plus Porsche 997 GT3 and GT2 models.
Fits:
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII GT2 RS 2011-13
Designed for demanding road and performance use, the 9M floating disc combines a high-carbon cast iron slotted rotor with a lightweight CNC-machined aluminium bell. The two-piece floating construction allows the rotor to expand more freely as temperatures increase, helping reduce heat-related stress and the risk of distortion.
Why Upgrade to a Two-Piece Floating Brake Disc?
High-performance Porsche braking systems generate considerable heat, particularly during repeated heavy braking.
A floating disc allows controlled movement between the iron rotor and aluminium bell as temperatures change. This helps accommodate thermal expansion and reduces stress within the assembly compared with a rigid one-piece design.
Benefits include:
- Improved management of thermal expansion
- Reduced heat transfer into the centre bell
- Lower risk of heat-related distortion and vibration
- Consistent braking during repeated heavy use
- Lightweight aluminium bell construction
- Replaceable rotor-ring design
- Suitable for performance road use
72-Vane Cooling Design
Each rotor incorporates 72 internal cooling vanes designed to efficiently move air through the disc.
Improved airflow helps dissipate heat generated during braking, assisting with temperature control during repeated high-speed stops and demanding driving.
CM-250 High-Carbon Iron Rotors
The rotor rings are manufactured from CM-250 formulated high-carbon alloy cast iron, selected for its strength and durability at elevated braking temperatures.
The rotor rings are also heat treated to relieve internal stresses within the material. This helps improve dimensional stability and reduces the likelihood of deformation and vibration through repeated heating and cooling cycles.
Slotted Rotor Surface
The slotted friction surface is designed for high-performance road applications.
Slots help maintain a clean contact surface between the brake pad and disc while allowing gases, dust and debris to escape from the braking surface, promoting consistent pad-to-disc contact.
CNC-Machined Aluminium Bells
The centre bells are CNC machined from 6061-T6 aluminium before being hard anodised for additional surface protection and durability.
Using aluminium for the centre bell also helps reduce unnecessary rotating and unsprung mass compared with an equivalent all-iron construction.
Disc Dimensions
- Diameter: 350mm
- Thickness: 34mm
Porsche 996 GT3 / GT2 & 997 GT3 / GT2 Floating Front Brake Discs
Two-piece floating brake discs are an excellent upgrade for high-performance Porsche braking systems where heat management, durability and consistent braking performance are priorities.
The 9M 350x34mm floating front brake disc combines a high-carbon iron friction ring with a lightweight 6061-T6 aluminium bell and 72-vane internal cooling design. This makes it particularly suitable for Porsche GT3, GT3 RS and GT2 models subjected to enthusiastic road driving and repeated high-temperature braking.
For owners searching for Porsche 996 GT3 brake upgrades, 997 GT3 floating front discs or replacement two-piece GT2 brake rotors, the 9M system provides a performance-focused alternative to conventional brake disc construction.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9M99735140990
The product you are viewing cross references to these numbers
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
- Porsche 924 Carrera GTS 2.0L 1982
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944S 2.5L 16V 1987-88
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
Brake disc rotor Rear. Porsche 944 / 924S / 924Turbo / 924GT Cars without ABS
Cross drilled brake discs upgrade for better cooling & braking.
Porsche 944 2.5L 1982-85 ** Cars without ABS - REAR
Porsche 944 2.5L 1986-87 ** Cars without ABS - REAR
Porsche 924 S / Turbo / GT ** Cars without ABS - REAR
Porsche 928 >>1985 - REAR
Cross drilled brake discs upgrade for better cooling & braking.
Internally Vented, Perforated, Coated
Outer diameter: 289 mm
Brake Disc Thickness: 20 mm
Bolt Hole Circle Ø: 130 mm
Centering Diameter: 103 mm
Weight: 6.7 kg
Hole Pitch / Number: 10/5
Please note: Those discs are not sided. They fit left or right side of the car. Brake disc rotors are priced each
The Zimmermann Sport Brake Disc was developed as a result of experience of brake discs in series-production vehicles in connection with racing. The brake system is optimised by combining high-quality cast materials with a perforated braking surface.
Your advantages:
• Better wet braking performance by permanent expulsion of brake dust and water
• Sporty look
• Because of the anti-corrosion protection Coat Z better finish - especially of the hub and the outer diameter
• Noticeable improvement in the braking power of your car
• Prevention of brake fade
• Countersinking of holes doubles up as wear indicator
• 1:1 exchange of original disc possible
• No additional adaptions necessary
• Not subject to registration: general ABE certification supplied with disc
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94435204105XZIM
The product you are viewing cross references to these numbers