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Porsche > 991 (911) MK2 2016-2019 > 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19 > Brakes >

Caliper Bolts / Disc Screws

Caliper Bolts / Disc Screws

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DISPLAYING 1 to 4 (of 13 products)
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Brake Disc Mounting Screws SET OF 8 for Porsche with 5mm factory spacers - 90026910601, 90026910609
1
Brake Disc Mounting Screws SET OF 8 for Porsche with 5mm factory spacers
90026910601/1x8
Product Information
Product Information
Brake Disc Mounting Screws. M6 x 16. (for vehicles with 5mm spacers/Factory option XRP)
SET OF 8 (2 x Brake disc screws are required per disc/5mm spacer.)

Brake disc retaining screw is an extended length fixing screw designed specifically for Porsche vehicles fitted with factory 5mm wheel spacers. It secures the brake disc (rotor) to the wheel hub, ensuring correct disc positioning during wheel installation and brake servicing. On vehicles equipped with factory spacers, standard-length disc screws are too short to achieve proper thread engagement. This longer version compensates for the additional spacer thickness, allowing the brake disc to seat correctly against the hub and remain accurately aligned until the wheel bolts are installed. Manufactured to Porsche factory dimensions and thread specification, this screw provides correct fitment, corrosion resistance, and reliable retention during service and assembly. It is a critical but often overlooked component when working on cars with OEM wheel spacers.

Fits:
Porsche 996
Porsche 997.1
Porsche 997.2
Porsche 991.1
Porsche 991.2
Porsche Boxster 986
Porsche Boxster 987.1
Porsche Boxster 987.2
Porsche Cayman 987C.1
Porsche Cayman 987C.2

Porsche Panamera 970

Why Replacement Matters: 
Using a standard-length brake disc screw on a spacer-equipped hub can result in insufficient thread engagement, leading to poor disc retention or stripped threads. Replacing missing or incorrect screws with the proper extended version ensures correct assembly, avoids hub damage, and maintains factory-correct brake installation.



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Related, superseded, cross reference or alternative numbers for comparison.

90026910601
90026910601
90026910609

The product you are viewing cross references to these numbers
Brake caliper mounting bolt M12x1.5x85. Porsche 997.2 / 991 / 992 - 99906705309, 9A700758500
3
Brake caliper mounting bolt M12x1.5x85. Porsche 997.2 / 991 / 992
Special Order item
9A700758500::2
Product Information
Product Information

Brake Caliper Mounting Bolt - M12 x 1.5 x 85.
2x Bolts required per Caliper

Sold each Ensure your Porsche braking system remains securely assembled with this brake caliper mounting bolt Designed to secure the brake caliper firmly to the suspension upright, this high-strength fixing is manufactured to meet the demanding loads experienced during everyday driving, spirited road use and high-performance braking.

fr

  • Porsche 997 MKII Carrera C2 3.6L 2009-12 – with and without PCCB
  • Porsche 997 MKII Carrera C4 3.6L 2009-12 – with and without PCCB
  • Porsche 997 MKII Carrera GTS / 4 GTS 3.8L 2009-12 - with PCCB
  • Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19 - without PCCB
  • Porsche 991.2 Carrera 2S / GTS 3.0L (420/450 Bhp) 2016-19 - without PCCB
  • Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19 - without PCCB
  • Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19 - without PCCB
  • Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19 - without PCCB
  • Porsche 991.2 Cabriolet 2S / GTS 3.0L (420/450 Bhp) 2016-19 - without PCCB
  • Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19 - without PCCB
  • Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19 - without PCCB
  • Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19 - without PCCB
  • Porsche 991.2 Targa 4S / GTS 3.0L (420/450 Bhp) 2016-19 - without PCCB
  • Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19 – with and without PCCB

  • Porsche 992.2 Carrera 2 3.0L 2024>>
  • Porsche 992.2 Carrera 2 3.0L Cabriolet 2024>>
  • Porsche 992.2 GT3 2025>>
992.2 Cars with Option Codes
FM0 Basic 1LS
Front PCCB 1LQ / 1LX

front

  • Porsche 997 MKII GT3 / GT3 RS 2010-11 – without PCCB
  • Porsche 997 MKII Turbo 2010-13 – without PCCB
  • Porsche 997 MKII GT2 RS 2011-13 – without PCCB
  • Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16 – with and without PCCB
  • Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16 – with and without PCCB
  • Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16 – with and without PCCB
  • Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16 – with and without PCCB

  • Porsche 992.1 Carrera 2 3.0L 2019-24
  • Porsche 992.1 Carrera 4 3.0L 2019-24
  • Porsche 992.1 Carrera 2 Cabriolet 3.0L 2019-24
  • Porsche 992.1 Carrera 4 Cabriolet 3.0L 2019-24
  • Porsche 992.1 Carrera 2S / GTS 3.0L 2019-24
  • Porsche 992.1 Carrera 4S / GTS 3.0L 2019-24
  • Porsche 992.1 Carrera 2S / GTS Cabriolet 3.0L 2019-24
  • Porsche 992.1 Carrera 4S / GTS Cabriolet 3.0L 2019-24
  • Porsche 992.1 Targa 4 3.0L 2020-24
  • Porsche 992.1 Targa 4S / GTS 3.0L 2020-24
992.1 Cars with Option Code
Front 17” Black A8C Comfort Equip 1LS
Front 17” red/black A7F Sports Equip 1LS/1LR

rear
  • Porsche 992.1 Carrera 2 3.0L 2019-24
  • Porsche 992.1 Carrera 4 3.0L 2019-24
  • Porsche 992.1 Carrera 2 Cabriolet 3.0L 2019-24
  • Porsche 992.1 Carrera 4 Cabriolet 3.0L 2019-24
  • Porsche 992.1 Carrera 2S / GTS 3.0L 2019-24
  • Porsche 992.1 Carrera 4S / GTS 3.0L 2019-24
  • Porsche 992.1 Carrera 2S / GTS Cabriolet 3.0L 2019-24
  • Porsche 992.1 Carrera 4S / GTS Cabriolet 3.0L 2019-24
  • Porsche 992.1 Targa 4 3.0L 2020-24
  • Porsche 992.1 Targa 4S / GTS 3.0L 2020-24
992.1 Cars with Option Code
Rear 17” Black A8C Comfort Equipment

  • Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24 – with and without PCCB
  • Porsche 992.1 GT3 RS 4.0L 2022-24 – with and without PCCB

Diagram ref no 8

Whenever brake calipers are removed for servicing, pad replacement, disc replacement or caliper refurbishment, it is good practice to inspect the mounting bolts for wear, corrosion or thread damage. Replacing worn or damaged fasteners helps maintain correct clamping force and supports safe, reliable brake operation.

Manufactured from high-grade steel with the correct dimensions and thread specification, this mounting bolt provides a secure and dependable fit for a wide range of modern Porsche models.

What Does the Brake Caliper Mounting Bolt Do?

The brake caliper mounting bolt fastens the brake caliper securely to the hub carrier or suspension upright. It is responsible for maintaining the precise alignment of the caliper while resisting the significant braking forces generated under heavy deceleration.

Why Replace the Brake Caliper Mounting Bolt?

Brake mounting bolts experience repeated heat cycles, vibration and extremely high clamping loads. Over time they may suffer from:

  • Corroded or damaged threads
  • Wear from repeated removal and installation
  • Loss of protective coating
  • Incorrect torque from previous servicing
  • Stretch or fatigue after extended use

Replacing the bolt during brake maintenance helps ensure the caliper remains securely mounted.

Common Symptoms of a Worn or Damaged Mounting Bolt

  • Damaged or stripped threads
  • Corrosion on the bolt shank or head
  • Difficulty achieving correct torque
  • Caliper movement due to incorrect fastening
  • Fastener showing signs of previous over-tightening

Features

  • Direct replacement brake caliper mounting bolt
  • High-strength steel construction
  • Precision manufactured for accurate fitment
  • Designed for demanding braking loads
  • Ideal during brake disc, pad or caliper replacement
  • Helps maintain correct brake caliper alignment
  • Suitable for road and performance applications       



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

9A700758500
99906705309
9A700758500

The product you are viewing cross references to these numbers
Brake Caliper Mounting Bolt. Porsche 997 / 991 / 981 Cayman - 99906705409, WHT008186
3
Brake Caliper Mounting Bolt. Porsche 997 / 991 / 981 Cayman
Special Order item
WHT008186
Product Information
Product Information
Brake Caliper Mounting Bolts. M12 x 1.5 x 62.
2 x Bolts required per Caliper. Fits: FRONT Calipers.

porsche

Fits:
Porsche 981 Cayman GT4 2016
Porsche 991.2 Carrera 2017>> I450 Cars with Ceramic brakes (PCCB)
Porsche 991 Turbo / GT2 2014>> I450 Cars with Ceramic brakes (PCCB)
Porsche 997 Turbo / GT2 2012>> I450 Cars with Ceramic brakes (PCCB)
Porsche 997 GT3 2010-11
Porsche 991 GT3 / GT3 RS 2014-2017

Click 'Zoom in' for large parts diagram.
Diagram ref no 9

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

WHT008186
99906705409
WHT008186

The product you are viewing cross references to these numbers
Brake Caliper Mounting Bolt. Porsche 997 / 991 / 981 Cayman - 99906705409, WHT008186
3
Brake Caliper Mounting Bolt. Porsche 997 / 991 / 981 Cayman
WHT008186/1
Product Information
Product Information
Brake Caliper Mounting Bolts. M12 x 1.5 x 65.
2 x Bolts required per Caliper. Fits: FRONT Calipers.
Designed to meet or exceed original equipment specifications, ensuring a precise fit and secure installation for your Porsche’s braking system. Manufactured from high-strength steel and engineered for durability, this bolt provides the correct clamping force to maintain caliper alignment and brake performance under demanding conditions. Ideal for brake service or caliper replacement, it restores factory-level safety and reliability.

Fits:
Porsche 981 Cayman GT4 2016
Porsche 991.2 Carrera 2017>> I450 Cars with Ceramic brakes (PCCB)
Porsche 991 Turbo / GT2 2014>> I450 Cars with Ceramic brakes (PCCB)
Porsche 997 Turbo / GT2 2012>> I450 Cars with Ceramic brakes (PCCB)
Porsche 997 GT3 2010-11
Porsche 991 GT3 / GT3 RS 2014-2017
Porsche 992.1 Carrera 2017>> I450 Cars with Ceramic brakes (PCCB)
Porsche 992 Turbo / GT2 2014>> I450 Cars with Ceramic brakes (PCCB)

Diagram ref no 9

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

WHT008186
99906705409
WHT008186

The product you are viewing cross references to these numbers
DISPLAYING 1 to 4 (of 13 products)
1 2 3 4
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About Caliper Bolts / Disc Screws

Porsche Caliper Bolts & Disc Screws | Design911 Precision Fasteners for Secure, Reliable Braking Performance

Caliper bolts and disc screws are small but vital components of your Porsche’s braking system, ensuring your brake calipers and discs are mounted securely for safe, consistent performance. These fasteners maintain the correct torque and alignment under extreme temperatures and vibration. Over time, they can corrode, stretch, or lose tension — compromising braking safety and component integrity. Replacing them during brake servicing or restoration is essential for long-term reliability and precise fitment.

At Design911, we supply a wide range of caliper bolts and brake disc screws, crafted from high-tensile steel and corrosion-resistant alloys. Each component is engineered for exact fitment, durability, and consistent torque application. Ideal for servicing, upgrades, or full restorations, our fasteners ensure your Porsche’s braking system remains safe, precise, and true to its performance heritage.

What Do Caliper Bolts & Disc Screws Do?

Caliper bolts and disc screws secure the main braking components to the hub and suspension system, ensuring stability and proper braking alignment.

Core Functions:
• Fasten brake calipers to their mounting brackets.
• Secure brake discs (rotors) to wheel hubs.
• Maintain proper alignment under braking load.
• Prevent component movement, vibration, or uneven wear.
• Support safety and consistency under high heat and pressure.

These precision-engineered fasteners are key to the structural integrity of your Porsche’s braking system, maintaining consistent performance and driver confidence.

Why Do Caliper Bolts & Disc Screws Fail or Degrade?

Given their exposure to heat, moisture, and torque stress, caliper bolts and disc screws naturally experience wear and fatigue over time.

Common Causes of Failure Include:
• Corrosion or rust from moisture and road salt exposure.
• Thread wear or stretching from repeated tightening.
• Heat fatigue caused by intense braking cycles.
• Seized bolts from oxidation or incorrect torque application.
• Sheared or stripped heads during maintenance.

When fasteners degrade, they can loosen or fail — leading to brake vibration, noise, or unsafe component movement. Replacing them ensures reliability and safety under all driving conditions.

Why Replace or Upgrade Your Porsche Caliper Bolts & Disc Screws?

Replacing worn or corroded fasteners restores secure mounting and structural stability across your braking system. Design911’s precision-grade replacements are designed to meet Porsche specifications for torque and material strength, ensuring long-lasting performance.

Key Benefits:
• Restores secure and stable brake mounting.
• Prevents vibration, movement, or component wear.
• Resistant to corrosion, heat, and mechanical stress.
• Manufactured from high-tensile, treated steel or alloy.
• Direct-fit design for all Porsche applications.
• Ideal for servicing, upgrades, or restoration projects.

Design911’s Porsche caliper bolts and disc screws provide the strength, precision, and durability required for every braking system — ensuring your Porsche remains safe, responsive, and road-ready.

Highlights

• Premium Porsche caliper bolts and brake disc screws.
• High-strength steel construction with anti-corrosion coating.
• Designed for secure, vibration-free brake mounting.
• Essential for brake servicing, restoration, or upgrades.
• Fits a wide range of Porsche classic and modern models.
• Engineered for long-lasting strength and reliability.

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