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Shock Absorbers REAR
- 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 C4 3.6L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII Turbo 2010-13
Bilstein Replacement for the Original Spec
Fits:
Porsche 997 C4 / C4S / Turbo - For vehicles with PASM, For vehicles with electronic suspension control
B4 High Quality direct replacement shock absorbers constructed and finished to Bilstein's high standards often far and above what the car was originally supplied with. They can actually be a performance improvement if replacing plain, none gas charged, oil filled dampers. They dramatically reduce cavitation / oil foaming, thus give for more stable damping forces when driven 'spiritedly'. Some surprising cars come with plain oil filled dampers.
Key Features:
- Twin Tube Damper
- Gas pressurized
- OE damping forces
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
BILSTEIN9974B4P
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
SET OF 4. Fits cars:
Standard Suspension - WITHOUT M030 or PASM suspension
Bilstein Replacement for the Original Spec
Fits:
Porsche 997 C4 / C4S - Cars with Standard chassis (Option code: I029)
B4 High Quality direct replacement shock absorbers constructed and finished to Bilstein's high standards often far and above what the car was originally supplied with. They can actually be a performance improvement if replacing plain, none gas charged, oil filled dampers. They dramatically reduce cavitation / oil foaming, thus give for more stable damping forces when driven 'spiritedly'. Some surprising cars come with plain oil filled dampers.
Key Features:
- Twin Tube Damper
- Gas pressurized
- OE damping forces
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
BILSTEIN9974B4
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- 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 C4 3.6L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII Turbo 2010-13
Bilstein Sports B6 front and rear shock absorbers for Porsche 997 Carrera 4, Carrera 4S and Turbo models from 07/2004 with electronic suspension control, offering PASM-compatible damping tailored to these all-wheel-drive 911s.
What This Product Does These Bilstein B6 Sports dampers replace the original front and rear shock absorbers on PASM-equipped 997 C4, C4S and Turbo models. They are designed to work with the factory electronic suspension control, helping maintain consistent damping behaviour across selected modes while renewing worn or leaking original units.
Functions
- Support PASM-equipped suspension with compatible damping characteristics
- Control vertical wheel and body movement over bumps
- Help maintain stable tyre contact with the road surface
- Assist in keeping the car composed during braking and acceleration
- Work with the factory control system to vary damping by mode
- Contribute to a tidy, well-maintained suspension setup when refreshing other components
Symptoms of Fault
- Excessive bouncing or floaty, unsettled ride
- Knocking noises from the suspension area over bumps
- Visible oil leaks on the damper bodies
- Uneven or accelerated tyre wear
- PASM warning messages or inconsistent behaviour between modes
- Car feeling less composed in quick direction changes
Why Replacement Matters Over time, PASM dampers can suffer from internal wear, oil leakage and age-related deterioration, especially on higher-mileage 997 models. Replacing tired units with PASM-compatible Bilstein B6 Sports shock absorbers helps restore predictable damping response so the adaptive system can function as intended. This supports stable handling, consistent behaviour between modes and a more cohesive feel when combined with service items such as mounts and bushes.
Fits
- Porsche 997 (911) MK1 2005–2008
- 997 MK1 Carrera 4 3.6L 2005–08
- 997 MK1 Carrera 4S 3.8L 2005–08
- 997 MK1 Turbo 2007–09
- Porsche 997 (911) MK2 2009–2012
- 997 MKII Carrera C4 3.6L 2009–12
- 997 MKII Carrera C4S 3.8L 2009–12
- 997 MKII Turbo 2010–13
FAQs
- Do these work with PASM?
They are intended for Porsche models with electronic suspension control and are designed to operate with the PASM system when correctly matched to the vehicle. - Should dampers be replaced in pairs or as a full set?
They are typically renewed in axle pairs (both fronts or both rears), with many owners choosing to replace all four at the same time on higher-mileage cars. - Is an alignment required after installation?
An alignment check is usually recommended after suspension work to confirm geometry is within specification. - Anything else to replace at the same time?
It is common to inspect and, if necessary, renew top mounts, bushes and any worn hardware while access is available.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SUSPENSION.997.B6KIT
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C4S 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:
1 × 99734304741 – OE Match Front shock absorbers (left)
1 × 99734304841 – OE Match Front shock absorbers (right)
2 × 99733305332 – OE Match Rear shock absorbers (left + right)
Fits:
Replacement for Car with PASM Electronic Damper Control (option code: 475)
Porsche 997.1 Carrera 4 / Carrera 4S 2005 - 2008 Coupe / Cabrio
Porsche 997.2 Carrera 4 / Carrera 4S 2009 - 2012 Coupe / Cabrio
- 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 behaviour, 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.
SUSPENSIONKIT997C4
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 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
SET OF 2. Fits Left And Right. Must be fitted as a pair
Fits:
Porsche 997.1 Carrera 4 TARGA / Carrera 4S TARGA MKI 2005>>2008
Porsche 997.2 Carrera 4 TARGA / Carrera 4S TARGA MKII 2009>>2012
Replacement for Cars With Option Codes:
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
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99733304911
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 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
Bilstein Replacement for the Original Spec
Fits:
Porsche 997 C2 / C2S /C4 / C4S
For vehicles with standard chassis, For vehicles without PASM, For vehicles without electronic suspension control (Option code: I029)
B4 High Quality direct replacement shock absorbers constructed and finished to Bilstein's high standards often far and above what the car was originally supplied with. They can actually be a performance improvement if replacing plain, none gas charged, oil filled dampers. They dramatically reduce cavitation / oil foaming, thus give for more stable damping forces when driven 'spiritedly'. Some surprising cars come with plain oil filled dampers.
Key Features:
- Twin Tube Damper
- Gas pressurized
- OE damping forces
Please Note:
Price is for each damper you will need to buy 2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
24-147477
The product you are viewing cross references to these numbers
- 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 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
Bilstein Replacement for the Original Spec
Fits:
Porsche 997 C2 / C2S / C4 / C4S
For vehicles with sports suspension, For vehicles without PASM, For vehicles without electronic suspension control (Option code: I130 / I480)
B4 High Quality direct replacement shock absorbers constructed and finished to Bilstein's high standards often far and above what the car was originally supplied with. They can actually be a performance improvement if replacing plain, none gas charged, oil filled dampers. They dramatically reduce cavitation / oil foaming, thus give for more stable damping forces when driven 'spiritedly'. Some surprising cars come with plain oil filled dampers.
Key Features:
- Twin Tube Damper
- Gas pressurized
- OE damping forces
Please Note:
Price is for each damper you will need to buy 2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
24-147484
The product you are viewing cross references to these numbers
- 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 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
Sold Each.
Fits Left And Right.
Fits:
Porsche 997.1 Carrera 4 TARGA / Carrera 4S TARGA MKI 2005>>2008
Porsche 997.2 Carrera 4 TARGA / Carrera 4S TARGA MKII 2009>>2012
Cars With Option Codes:
475 - "PASM" Electronic Damper Control
Diagram Ref No 1
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99733304911
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
Fits:
Porsche 997.1 Carrera 4 TARGA / Carrera 4S TARGA MKI 2005>>2008
Porsche 997.2 Carrera 4 TARGA / Carrera 4S TARGA MKII 2009>>2012
Replacement for Cars With Option Codes:
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
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99733304911
The product you are viewing cross references to these numbers
Porsche Rear Shock Absorber Parts | Design911 Suspension Components for Ride Stability, Comfort & Handling Control
Rear shock absorber parts play a vital role in maintaining your Porsche’s balance, ride comfort, and handling precision. These components support the rear suspension system, absorbing impacts and ensuring the vehicle remains stable under acceleration, braking, and cornering. From top mounts and bearings to bump stops, dust covers, and hardware, every component contributes to the consistent damping and ride quality that define Porsche performance.
At Design911, we supply a comprehensive range of rear shock absorber parts, precision-engineered for durability, alignment accuracy, and long-term reliability. Whether you’re carrying out routine maintenance, full suspension restoration, or performance upgrades, our parts help maintain perfect damping control and ensure your Porsche drives as smoothly and confidently as intended.
What Do Rear Shock Absorber Parts Do?
Rear shock absorber components ensure proper damper function and suspension support, allowing the rear axle to move fluidly while maintaining grip and control.
Core Functions:
• Support the rear shock absorber and maintain correct alignment.
• Absorb road vibrations for smoother ride comfort.
• Reduce body movement and improve handling balance.
• Protect suspension components from dirt and debris.
• Ensure stable damping under high-load or performance driving.
Together, these parts keep your Porsche’s rear suspension responsive, refined, and stable — essential for performance driving and everyday comfort alike.
Why Do Rear Shock Absorber Parts Fail or Degrade?
Over time, exposure to heat, vibration, and road conditions causes suspension components to wear and lose effectiveness.
Common Causes of Failure Include:
• Worn rubber or polyurethane bushings and mounts.
• Corroded bolts or degraded hardware.
• Cracked dust covers allowing contamination into the damper.
• Damaged bearings or perished top mounts.
• Fatigue from prolonged exposure to road stress or track use.
Failure of these components can cause rear-end instability, clunking noises, poor ride comfort, and uneven handling — all clear signs replacement is needed.
Why Replace or Upgrade Your Porsche Rear Shock Absorber Parts?
Replacing worn or damaged rear shock absorber parts restores suspension geometry, damping efficiency, and comfort. Upgraded performance components improve ride stability, response, and long-term reliability.
Key Benefits:
• Restores smooth ride and consistent damping.
• Improves handling precision and rear suspension balance.
• Reduces noise, vibration, and harshness.
• Manufactured from high-quality, corrosion-resistant materials.
• Fits Porsche 911, 944, 968, Boxster, Cayman, Panamera, Cayenne, and Macan
models.
• Perfect for servicing, restorations, or suspension performance upgrades.
Design911’s Porsche rear shock absorber parts deliver strength, precision, and quality — keeping your Porsche composed, comfortable, and confident on every drive.
Highlights
• Premium Porsche rear shock absorber mounts, bearings, and
hardware.
• High-quality materials for long-lasting performance.
• Designed for perfect fitment and damping efficiency.
• Reduces rear-end vibration, noise, and instability.
• Suitable for classic and modern Porsche models.
• Ideal for suspension rebuilds, maintenance, or upgrades.
