OE Match with PASM
This OE Match full suspension package provides all four replacement shock absorbers for PASM-equipped cars, featuring built-in cancellation resistors to prevent dashboard errors. Replacement for adaptive damping system on Porsche 991.1 Turbo / Turbo S (2014–2016), Not suitable for GT2 models.
The kit includes two front replacement PASM shocks (OE ref no: 991343045A5) and two rear replacement PASM shocks (OE ref no: 99133305326) 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 991.1 Turbo / Turbo S 2014 - 2016
Replacement for cars with option codes:
475 - "PASM" Electronic Damper Control
352 - Electronic Damper Control For PASM And PDCC
Diagram ref no 1
- 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.
Each damper is manufactured to be a direct-fit replacement shocks for PASM vehicles, complete with integrated cancellation resistors so you can upgrade with zero dashboard errors or warning lights, ensuring seamless communication with the PASM control module.
This set is ideal for high-mileage cars, leaking or weakened PASM dampers, or anyone seeking to restore the driving precision, comfort, and stability of the 991 Turbo platform.
As PASM dampers wear, internal valves weaken, seals leak and electronic reaction time slows - reducing the system’s ability to adjust damping. This results in instability, harsh ride quality, reduced grip and unpredictable handling. Replacing all four shocks direct-fit replacement shocks for PASM vehicles, complete with integrated cancellation resistors so you can upgrade with zero dashboard errors or warning lights.
When to replace:
• PASM warning messages or inconsistent adaptive damping
• Excessive body movement, squat, dive or rolling
• Harsh, bouncy or unstable ride on bumps
• Fluid leakage from any shock absorber
• Rear instability or poor steering precision
• Uneven or accelerated tyre wear
• High-mileage suspension (>60k miles) or full chassis refresh
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SUSPENSIONKIT991T.1
The product you are viewing cross references to these numbers
- Porsche 991.1 Turbo 3.8L (520bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560Bhp) 2014-16
Rear suspension shock absorber designed as replacement for Porsche 911 991 series (2014–2016) Turbo / Turbo S models equipped with PASM/PDCC. Not suitable for GT2 models.
SET OF 2, Fits left and right. Must be fitted in pairs
Fits:
Porsche 991.1 Turbo / Turbo S 2014 - 2016
Replacement for Cars with option codes:
352 - Electronic Damper Control For PASM And PDCC
475 - "PASM" Electronic Damper Control
- 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.
Diagram ref no 1
When to replace:
• Ride becomes overly soft, bouncy or unstable over bumps or dips
• Rear feels vague, loose or unsettled under braking or cornering
• Rear tyres show uneven or accelerated wear
• Original shock is leaking fluid or the damping feels inconsistent
• Completed high-mileage or old suspension refresh - replacing springs, mounts, bushings or other related parts
• Preparing the vehicle for spirited driving, track use, or renewed performance expectations
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99133305326
The product you are viewing cross references to these numbers
- Porsche 991.1 Turbo 3.8L (520bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560Bhp) 2014-16
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 rear left or right side, Price is each Must be fitted in pairs
Fits:
Porsche 911 (991) 3.4L Carrera / 3.8L Carrera S 12/2011-16
Porsche 911 (991) 3.4L Carrera / 3.8L Carrera S 12/2011-16
Replacement for cars with Electronic damper control for PASM and PDCC (I352)
PASM electronic damper control (I475)
PASM w/o lowering (I477)
- 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.
99133305324
The product you are viewing cross references to these numbers
- Porsche 991.1 Carrera C2 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C2S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C4S 3.8L (400Bhp) 2012-16
Rear suspension shock absorber designed as replacement for Porsche 911 991 series (2014–2016) Turbo / Turbo S models equipped with PASM/PDCC. Not suitable for GT2 models.
Sold each, Fits left and right. Must be fitted in pairs
Fits:
Porsche 991.1 Turbo / Turbo S 2014 - 2016
Replacement for Cars with option codes:
352 - Electronic Damper Control For PASM And PDCC
475 - "PASM" Electronic Damper Control
- 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.
Diagram ref no 1
When to replace:
• Ride becomes overly soft, bouncy or unstable over bumps or dips
• Rear feels vague, loose or unsettled under braking or cornering
• Rear tyres show uneven or accelerated wear
• Original shock is leaking fluid or the damping feels inconsistent
• Completed high-mileage or old suspension refresh - replacing springs, mounts, bushings or other related parts
• Preparing the vehicle for spirited driving, track use, or renewed performance expectations
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99133305326
The product you are viewing cross references to these numbers
- Porsche 991.1 Turbo 3.8L (520bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560Bhp) 2014-16
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.