OE Match with PASM
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
These replacement shock absorbers are compatible with PASM-equipped cars and include built-in cancellation resistors to eliminate dashboard errors. They effectively bypass the Active Suspension Management system, allowing the vehicle to function as though it has standard suspension installed.
Set includes:
2 × 99734304524 – OE Match Front shock absorbers (left + right)
2 × 99733305332 – OE Match Rear shock absorbers (left + right)
Replacement for Car with PASM Electronic Damper Control (option code: 475)
Porsche 997.1 Carrera 2 3.6L
Porsche 997.1 Carrera 2S 3.8L
Porsche 997.2 Carrera 2 3.6L
Porsche 997.2 Carrera 2S 3.8L
- These shock absorbers are not PASM dampers and do not offer PASM-adjustable damping.
- They are designed as standard replacement units with built-in electronics to cancel PASM fault warnings.
- For correct functionality and proper vehicle handling, they must be installed as a full set of four (2 × front shock absorbers + 2 × rear shock absorbers)
- Mixing PASM units with OEMatch replacement units is not permitted and may result in suspension imbalance or fault messages.
Over time, shock absorbers lose their ability to control movement, leading to a less stable, bouncier and less predictable car. Replacing all four dampers at once ensures perfectly matched suspension behavior, consistent ride comfort and proper chassis balance across front and rear.
When to Replace:
• Noticeable bounce, float or instability
• Leaking shock oil on any corner
• Front-end dive under braking or rear squat under acceleration
• Rough ride quality, vibration or knocking noises
• Uneven tyre wear or alignment issues
• Full suspension refresh on higher-mileage 997 models
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SUSPENSIONKIT997C2
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII Turbo 2010-13
These replacement shock absorbers are compatible with PASM-equipped cars and include built-in cancellation resistors to eliminate dashboard errors. They effectively bypass the Active Suspension Management system, allowing the vehicle to function as though it has standard suspension installed.
Fits:Porsche 997 C2 / C2S / C4 / C4S
* Car with PASM electronic damper control (I475)
- These shock absorbers are not PASM dampers and do not offer PASM-adjustable damping.
- They are designed as standard replacement units with built-in electronics to cancel PASM fault warnings.
- For correct functionality and proper vehicle handling, they must be installed as a full set of four (2 × front shock absorbers + 2 × rear shock absorbers)
- Mixing PASM units with OEMatch replacement units is not permitted and may result in suspension imbalance or fault messages.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99733305332
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII Turbo 2010-13
Sold individually, Must be fitted in pairs Fits left and right side.
Fits:
Porsche 997 C2 / C2S / C4 / C4S
Replacement for Car with PASM electronic damper control (I475)
- These shock absorbers are not PASM dampers and do not offer PASM-adjustable damping.
- They are designed as standard replacement units with built-in electronics to cancel PASM fault warnings.
- For correct functionality and proper vehicle handling, they must be installed as a full set of four (2 × front shock absorbers + 2 × rear shock absorbers)
- Mixing PASM units with OEMatch replacement units is not permitted and may result in suspension imbalance or fault messages.
Over time, rear shock absorbers lose their damping ability, causing the car to feel unstable, less controlled and less comfortable. Worn shocks can also reduce cornering grip, create unwanted noise and vibration, and even increase braking distance due to poor weight transfer. Replacing them restores proper suspension behaviour, safety and the precise handling expected from a Porsche 911.
When to Replace:
• Visible oil leakage from the shock body
• Rear end feels loose, bouncy or unstable
• Noticeable vibration, knocking or harshness from the rear
• As part of a full suspension overhaul
• When upgrading to restore consistent ride quality and handling performance
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99733305332
The product you are viewing cross references to these numbers
Porsche Rear Shock Absorbers for PASM | Design911 Adaptive Suspension Components for Ride Comfort & Precision Handling
Rear shock absorbers for Porsche Active Suspension Management (PASM) are sophisticated components that combine hydraulic damping with electronic control for adaptive performance. By automatically adjusting damping levels based on road conditions, speed, and driving mode, PASM rear shocks deliver exceptional comfort and agility — ensuring your Porsche maintains perfect composure and balance.
At Design911, we offer a comprehensive range of PASM rear shock absorbers, precision-engineered to meet the highest performance standards. Each unit is built using advanced materials, durable seals, and electronic actuators for consistent responsiveness. Ideal for servicing, suspension restoration, or performance upgrades, these components ensure your Porsche’s adaptive suspension continues to deliver maximum stability, traction, and control.
What Do Rear PASM Shock Absorbers Do?
Rear PASM shock absorbers form part of Porsche’s electronically controlled adaptive suspension system, automatically adjusting damping force in real time to maintain balance and ride comfort.
Core Functions:
• Electronically adjust damping stiffness for comfort or sport modes.
• Maintain rear-end stability under acceleration, braking, and cornering.
• Reduce vibration, pitch, and roll for smoother ride quality.
• Improve traction and control in variable road conditions.
• Work seamlessly with Porsche’s electronic control modules for precision
handling.
In optimal condition, PASM rear shocks ensure the perfect blend of agility and comfort that defines Porsche’s suspension engineering.
Why Do Rear PASM Shock Absorbers Fail or Degrade?
Rear adaptive dampers operate under high pressure and constant motion, leading to gradual wear over time — particularly in performance or high-mileage vehicles.
Common Causes of Failure Include:
• Internal hydraulic fluid leaks reducing damping effectiveness.
• Electronic actuator or solenoid malfunction.
• Corrosion or contamination of electrical connectors.
• Seal deterioration from heat or moisture exposure.
• Sensor or control module communication faults.
When PASM shock absorbers begin to fail, drivers may experience harsh ride quality, warning lights, or reduced handling precision — clear indicators that inspection or replacement is necessary.
Why Replace or Upgrade Your Porsche Rear PASM Shock Absorbers?
Replacing worn or faulty adaptive dampers restores full PASM functionality and ensures your Porsche’s suspension delivers comfort and control as designed. Performance-tuned replacements can also enhance handling response and system reliability.
Key Benefits:
• Restores smooth ride quality and adaptive damping accuracy.
• Improves handling precision, traction, and rear-end stability.
• Eliminates suspension faults and uneven ride response.
• Engineered from corrosion-resistant, high-strength materials.
• Fits Porsche 911, Panamera, Cayenne, and Macan models with PASM.
• Perfect for adaptive suspension repairs, restorations, or upgrades.
Design911’s Porsche PASM rear shock absorbers combine engineering excellence with durability — ensuring your Porsche remains refined, balanced, and dynamic across all driving conditions.
Highlights
• Premium Porsche PASM adaptive rear shock absorbers.
• Precision-calibrated for comfort and sport damping modes.
• Restores performance, ride comfort, and suspension balance.
• Compatible with Porsche Active Suspension Management systems.
• High-quality materials for long-term reliability.
• Ideal for maintenance, performance tuning, or full restoration.
