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CV Boots and Kits
The ROHLER Titanium Driveshaft Bolt (M8 x 50) is a premium lightweight replacement fastener designed for securing the driveshaft (CV joint) on a range of classic and modern Porsche models. It is designed as a direct replacement for Porsche part number 90006721102.
Supplied as a single bolt
Fits:
Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera MANUAL cars 24 per car (Not Turbo)
Porsche 911 1978-1983 3.0L / SC MANUAL cars 24 per car (Not Turbo)
Porsche 911 1984-1986 3.2L (Not Turbo) 24 per car
Porsche 911 1987-1989 3.2L G50 (Not Turbo) 24 per car
Porsche 964 (911) C4 1989-93 FRONT 12 per car
Porsche 964 (911) C4 1989-93 REAR 12 per car
Porsche 993 (911) C4 1994-97 REAR 12 per car
Porsche 993 (911) C4S 1994-97 REAR 12 per car
Porsche 993 (911) TURBO 1994-96 REAR 12 per car
Porsche Boxster 986 2.5L 1997-99 REAR 12 per car
Porsche Boxster 986 2.7L 1999-02 REAR 12 per car
Porsche 996 C4 3.4L 1997-08/01 FRONT 12 per car
Porsche 996 C4 3.6L 09/01-2005 FRONT 12 per car
Porsche 996 C4S 3.6L 09/01-2005 FRONT 12 per car
Porsche 996 TURBO 2000-05 FRONT 12 per car
Diagram ref no 3
The driveshaft bolt secures the driveshaft (CV joint) to the drivetrain assembly, maintaining the correct clamping force to minimise movement and ensure reliable transmission of engine torque to the wheels.
Key Features & Benefits
• Premium ROHLER titanium construction
• Direct replacement for Porsche 90006721102
• Lightweight with an excellent strength-to-weight ratio
• Outstanding corrosion resistance
• Precision-machined for OEM-style fitment
• Suitable for road, fast road, and motorsport applications
• Sold individually (purchase the required quantity for your vehicle)
Why Replacing Driveshaft Bolts Matters
Driveshaft bolts are subjected to high torque loads and constant vibration. During driveshaft or CV joint servicing, Porsche recommends inspecting the mounting hardware, and replacing worn or damaged bolts helps maintain the correct clamping force and reduces the risk of loosening during operation. High-quality replacement bolts are particularly important on performance and high-mileage vehicles.
When to Replace Driveshaft Bolts
• During CV joint or driveshaft replacement
• When replacing CV boots
• If the original bolts are corroded, damaged, or have worn threads
• If bolt heads are rounded or show signs of stretching
• During drivetrain restoration or performance upgrades
• Whenever the original fastening hardware no longer meets specification
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90006721102T
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 964 (911) C4 1989-93
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
Porsche CV Boots & CV Boot Kits | Protect Your Driveshafts and Extend Drivetrain Life
CV boots (Constant Velocity boots) are essential components that protect your Porsche’s CV joints from dirt, debris, and moisture while retaining the grease needed for smooth operation. A properly sealed CV boot ensures consistent joint lubrication and prevents costly drivetrain wear or failure.
At Design911, we supply premium CV boots and complete CV boot kits designed to match or exceed original standards. Each boot is made from high-strength rubber or thermoplastic elastomer (TPE) materials for maximum flexibility, heat resistance, and durability. Our CV boot kits include clamps, grease, and hardware for easy installation and long-lasting protection.
Whether you’re restoring a classic Porsche or maintaining a modern model, replacing worn or damaged CV boots prevents joint damage, eliminates noise, and keeps your driveline operating smoothly.
What Do CV Boots Do?
CV boots are protective covers fitted over the CV joints on your Porsche’s driveshafts. They keep grease inside the joint while preventing dirt and contaminants from entering.
Core Functions:
- Protect CV joints from dirt, dust, and water intrusion.
- Retain essential lubrication for smooth articulation.
- Maintain flexibility across suspension travel and steering angles.
- Prevent premature wear of CV joints and driveshaft components.
Without a properly functioning CV boot, grease leaks out and contaminants enter — leading to CV joint wear, clicking noises, and eventual driveshaft failure.
Why Do CV Boots Fail or Wear Out?
Over time, CV boots are exposed to constant movement, road debris, heat, and environmental conditions, causing them to crack or split. Once damaged, they quickly lose their protective function.
Common Causes of Failure Include:
- Age-related cracking and hardening of the rubber or TPE.
- Tears from road debris or impact damage.
- Heat degradation near exhaust or engine components.
- Improper installation or stretched material.
- Contamination leading to grease loss and corrosion.
When a CV boot splits, grease leaks out and dirt gets in — rapidly wearing down the CV joint and leading to clicking sounds, vibration, and potential driveline failure.
Why Replace Your Porsche CV Boots & Kits?
Replacing your CV boots at the first signs of wear prevents expensive CV joint or driveshaft replacement. High-quality replacement boots or complete CV boot kits ensure your Porsche’s drivetrain remains protected and operating smoothly.
Key Benefits:
- Protects CV joints and driveshafts from premature wear.
- Prevents grease leaks and contamination.
- Restores quiet, smooth driveline operation.
- Available as individual boots or complete kits with fittings.
- Manufactured from premium rubber or thermoplastic for longevity.
- Suitable for standard, restoration, or performance applications.
It’s always recommended to replace CV boots in pairs (inner and outer) during driveline servicing for balanced wear protection and consistent reliability.
Highlights
- Premium-quality Porsche CV boots and CV boot kits.
- Protects CV joints from dirt, heat, and wear.
- Supplied with grease, clamps, and fittings for easy installation.
- Resistant to cracking, splitting, and high temperatures.
- Direct-fit solutions for Porsche 911, Cayman, Boxster, and other models.
- Essential for driveline maintenance and longevity.