Shock Absorber Parts REAR

Compensating plate. 3 mm
Rear



Fits:
Porsche 986 Boxster 1997-04
Porsche 987.1 Boxster 2005-08
Porsche 987C.1 Cayman 2005-08

Click 'Zoom in' for large parts diagram.
Diagram ref no 3

Old Porsche part numbers:
- 98633350402
- 98733350400

Related reference numbers
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98633350402

The product you are viewing cross references to these numbers

Rear Compensating Plate, 6MM.

Fits:
Porsche 986 Boxster 1997>>2004
Porsche 987.1 Boxster MKI 2005>>2008
Porsche 987.1 Cayman MKI 2005>>2008

Diagram Ref No 3


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Related, superseded, cross reference or alternative numbers for comparison.

98633350403

The product you are viewing cross references to these numbers

Compensating Plate. 3 mm
Rear



Fits:
Porsche 986 Boxster 1997-04
Porsche 987 Boxster 2005-08
Porsche 987C Cayman 2005-08

Click 'Zoom in' for large parts diagram.
Diagram ref no 3

Old Porsche part numbers:
- 98633350402
- 98733350400

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Related, superseded, cross reference or alternative numbers for comparison.

98633350402

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Rear monoball shock mount - Set of 2


Fits:
Porsche 986 Boxster
Porsche 987.1 Boxster
Porsche 987.2 Boxster

Porsche 987C.1 Cayman
Porsche 987C.2 Cayman

Ultimate replacement for factory rubber bush mount. Compatible with OE and aftermarket struts.

CNC machined 6061 anodized aluminum construction with stainless steel hardware.

Reduces rear wheel camber changes during hard cornering to maintain optimum tire contact for improved traction.
Increased monoball life due to spring load being distributed over the domed housing.

*Note: Not compatible with Ohlins or similar Coilover suspension.

Upgrade your vehicle's suspension with this high-performance monoball top mount, designed as a direct replacement for the original OE top mount. By replacing the compliant rubber bushing with a precision spherical bearing (monoball), unwanted suspension deflection is significantly reduced, providing a more direct connection between the suspension and chassis.

The result is improved suspension rigidity, sharper steering response, and more precise handling, allowing the suspension geometry to remain more consistent under high cornering and braking loads. This makes monoball top mounts an ideal upgrade for performance driving and motorsport applications where maximum steering precision and chassis feedback are desired.

Please note that, due to the elimination of the original rubber isolation, increased road noise, vibration, and harshness (NVH) will be transmitted into the cabin. Ride comfort will be reduced, and suspension noise may become more noticeable during normal road use.

Key Features:

• Direct replacement for the original OE top mount.
• Precision monoball (spherical bearing) design.
• Increased suspension rigidity.
• Quicker, more responsive steering.
• Improved handling and suspension geometry control.
• Ideal for performance and motorsport applications.

Important Information:
This product is recommended for track use only. The increased noise, vibration, and reduced ride comfort make it unsuitable for drivers seeking OE levels of refinement for everyday road use.

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360250986R

The product you are viewing cross references to these numbers

Shock Absorber Additional Spring.



Porsche 987 Boxster 2006>>
Porsche 987 MKII Boxster 2009>>
Porsche 987C Cayman 2005-08
Porsche 987C MKII Cayman 2009>>

Porsche 718 Cayman

Porsche 718 Boxster

Click 'Zoom in' for large parts diagram.
Diagram ref no 8

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98733330100

The product you are viewing cross references to these numbers

Shock absorber additional spring.
The replacement helper spring / bump stop assembly for the rear shock absorber on Porsche 987 Boxster and Cayman vehicles. This bump stop is designed to sit atop or within the rear shock/strut assembly, supporting the suspension’s load under compression, preventing harsh bottoming, and helping maintain ride height and handling balance. Manufactured to match Porsche’s original specification in terms of dimensions and elasticity.


Porsche 987 Boxster 2006 - 2008
Porsche 987 MKII Boxster 2009 - 2012
Porsche 987C Cayman 2005 - 2008
Porsche 987C MKII Cayman 2009 - 2012
Porsche 718C (982C)  Cayman 2017>>
Porsche 718 (982) Boxster 2017>>

Diagram ref no 8

• Position on Vehicle: Rear suspension, installed within or adjacent to the shock absorber/strut assembly on the rear axle - acts as secondary support (helper spring) or as bump stop to cushion full compression of the suspension.

• Applications: Ideal when your rear suspension exhibits signs of bottoming, excessive squat under load, or the helper-spring/bump stop is missing, fatigued or deformed - improving ride quality, maintaining correct ride height, and preserving handling performance.

The helper spring / bump stop is a critical yet often overlooked component of the rear suspension system. It steps in under heavier loads, sharp compressions or lowered ride-height scenarios to prevent suspension harsh-bottoming, maintain ride height and preserve handling geometry. When the part is worn or missing, you may experience a harsh “clunk” on full compression, inconsistent ride height, rear suspension instability or accelerated wear of other suspension components. Replacing it restores correct support, prolongs suspension life and ensures your car handles the way it was engineered.

When and why to replace:
• Rear suspension bottoms out prematurely under moderate load or when cornering.
• Noticeable change in ride height, rear sagging or uneven posture under load.
• After replacement of rear shock absorbers or other suspension components where the helper spring/bump stop may have been removed or reused.
• High-mileage vehicle where the original component may have degraded or compressed with age.
• If you have lowered or modified your suspension and want to ensure secondary support matches the rest of the system.


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98733330100

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Shock absorber bump stops and dust covers. REAR.
SET OF 4 PARTS


Porsche 987 Boxster 2006-08
Porsche 987C Cayman 2005-08
Porsche 987 MKII Boxster 2009-12 Cars with PASM (M475)
Porsche 987C MKII Cayman 2009-12  Cars with PASM (M475)

Diagram ref no 7 and 8

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98733330100

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Shock absorber hexagon nut, M 14 x 1.5
REAR

Fits:
Porsche 986 Boxster 1997-04
Porsche 987 Boxster MKI & MKII 2005>> (Standard chassis ONLY)
Porsche 987C Cayman MKI & MKII 2005>> (Standard chassis ONLY)

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

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PAF103353

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Shock Absorber REAR Bellow or dust cover



Fits:
Porsche 986 Boxster 1997-04
Porsche 987 Boxster 2005-08
Porsche 987 MKII Boxster 2009>>
Porsche 987C Cayman 2005-08
Porsche 987C MKII Cayman 2009>>

Diagram ref no 7

Shock Absorber Ring. Rear



Fits:
Porsche 986 Boxster 1997-04
Porsche 987 Boxster 2005-08
Porsche 987C Cayman 2005-08

Diagram ref no 4

Shock absorber supporting mount rear.
2 Per car. Price is each.


Fits:
Porsche 986 Boxster 1997-04
Porsche 987 Boxster MKI & MKII 2005>>
Porsche 987C Cayman MKI & MKII 2005>>

Diagram ref no 2

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98733305900

The product you are viewing cross references to these numbers

Shock absorber supporting mount, rear.
Rear shock absorber supporting mount by OE Match for Porsche 986 and 987 Boxster models and the 987C Cayman. OE reference 98733305900
Sold individually, 2 required per car


Porsche 986 Boxster 1997 - 2004
Porsche 987.1 Boxster 2005 - 2008
Porsche 987.2 Boxster 2009 - 2012
Porsche 987C.1 Cayman 2006 - 2008
Porsche 987C.2 Cayman 2009 - 2012

Diagram ref no 2

What This Product Does

This supporting mount forms part of the rear shock absorber and coil-spring assembly. It provides the upper mounting interface for the damper, helping to locate the assembly correctly and isolate unwanted movement at the mounting point.

Functions

• Supports the rear shock absorber at its upper mounting point
• Helps maintain correct location of the damper assembly
• Connects the rear damper assembly to the vehicle body
• Helps limit movement and noise from a worn mounting point

Technical Details

• Brand: OE Match
• Installation position: Rear
• Quantity required: 2 per car
• Suitable for left- or right-hand rear installation
• Diagram ref no 2

Symptoms of Fault

• Knocking or rattling from the rear suspension over uneven surfaces
• Harsh impacts or increased vibration entering the body
• Loose movement around the upper shock absorber mounting point
• Vague or unsettled rear suspension behaviour
• Premature wear affecting the damper or associated mounting hardware

Why Replacement Matters

A worn supporting mount can allow unwanted movement within the rear damper assembly, resulting in noise and reduced suspension control. Inspection is advisable when replacing rear shock absorbers, particularly if the existing mounts are aged, perished or loose. Related bump stops, dust covers, spring supports and mounting hardware should also be checked while the assembly is removed.

FAQs

• How many mounts are required? 2 Per car. Price is each.
• Should both rear mounts be inspected together? Yes. Checking both sides helps identify uneven wear and supports balanced rear suspension operation.
• Should other components be checked during installation? Inspect the rear dampers, bump stops, dust covers, spring supports and mounting hardware while access is available.
• Is suspension alignment recommended afterwards? An alignment check is advisable following significant suspension work or where uneven tyre wear is present.

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98733305900

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USED Rear Monoball Shock Top Mount - Set Of 2.
This is a used part which has been fitted and used briefly then taken off the vehicle due to not meeting expectations of the customer. This part is in good working order. Ideal for restoration specialists, collectors, or workshops looking for components at reduced cost.

Condition: 
This Rear Monoball Shock Top Mount - Set Of 2 is a briefly used part. It has some fitting imperfections but in good / reusable working order.
Please see the gallery of images before purchasing.

Fits:

• Porsche Boxster 986 2.5L 1997-99
• Porsche Boxster 986 2.7L 1999-02
• Porsche Boxster S 986 3.2L 1999-02
• Porsche Boxster 986 2.7L 2003-04
• Porsche Boxster S 986 3.2L 2003-04
• Porsche Boxster 987 2.7L 2005-08/08
• Porsche Boxster 987 S 3.2/3.4L 2005-08/08
• Porsche Boxster 987 MKII 2.9L 2009-12
• Porsche Boxster S 987 MKII 3.4L 2009-12
• Porsche Cayman 2.7L 987C 2006-08
• Porsche Cayman S 3.4L 987C 2005-08
• Porsche Cayman 2.9L 987C MKII 2009-12
• Porsche Cayman S / R 3.4L 987C MKII 2009-12  

Ultimate replacement for factory rubber bush mount. Compatible with OE and aftermarket struts.

CNC machined 6061 anodized aluminum construction with stainless steel hardware.

Reduces rear wheel camber changes during hard cornering to maintain optimum tire contact for improved traction.
Increased monoball life due to spring load being distributed over the domed housing.

*Note: Not compatible with Ohlins or similar Coilover suspension.

Upgrade your vehicle's suspension with this high-performance monoball top mount, designed as a direct replacement for the original OE top mount. By replacing the compliant rubber bushing with a precision spherical bearing (monoball), unwanted suspension deflection is significantly reduced, providing a more direct connection between the suspension and chassis.

The result is improved suspension rigidity, sharper steering response, and more precise handling, allowing the suspension geometry to remain more consistent under high cornering and braking loads. This makes monoball top mounts an ideal upgrade for performance driving and motorsport applications where maximum steering precision and chassis feedback are desired.

Please note that, due to the elimination of the original rubber isolation, increased road noise, vibration, and harshness (NVH) will be transmitted into the cabin. Ride comfort will be reduced, and suspension noise may become more noticeable during normal road use.

Key Features:

• Direct replacement for the original OE top mount.
• Precision monoball (spherical bearing) design.
• Increased suspension rigidity.
• Quicker, more responsive steering.
• Improved handling and suspension geometry control.
• Ideal for performance and motorsport applications.

Important Information:
This product is recommended for track use only. The increased noise, vibration, and reduced ride comfort make it unsuitable for drivers seeking OE levels of refinement for everyday road use.

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

360250986RU

The product you are viewing cross references to these numbers