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Suspension & Axle

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DISPLAYING 1 to 16 (of 192 products)
1 2 3 4 >>
BILSTEIN987B4P
Product Information
Product Information
Bilstein Replacement FRONT and REAR shock absorbers Cars with I475 PASM

bilstein

SET OF 4 for FRONT & REAR
Bilstein Replacement for the Original Spec


Fits: Cars with I475 PASM
Porsche Boxster 987 2005-08
Porsche Cayman 987C 2005-08
Cayman 2.9L 987C MKII 2009>>
Cayman S 3.4L 987C MKII 2009>>
Boxster 987 MKII 2.9L 2009-2012
Boxster S 987 MKII 3.4L 2009-2012

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.

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Related, superseded, cross reference or alternative numbers for comparison.

BILSTEIN987B4P
22-147592
22-147608
22147592
22147608
98733305307
98733305312
98733305316
98733305320
98733305330
98733305333
98734304510
98734304521
98734304522
98734304509
98734304506
98734304511

The product you are viewing cross references to these numbers
BILSTEIN987B4
Product Information
Product Information
Bilstein Replacement FRONT and REAR shock absorbers PACKAGE

bilstein

SET OF 4 for FRONT & REAR
Bilstein Replacement for the Original Spec


Fits:
Porsche Boxster 987
Porsche Cayman 987C
ALL Cars with Standard Chassis
(*Not Cars with I475 PASM)

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.

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Related, superseded, cross reference or alternative numbers for comparison.

BILSTEIN987B4
22-147578
22-147585
22147578
22147585
98733305113
98734304106
98734304702
98734304703
98734304201
98734304107
98734304704
98734304205

The product you are viewing cross references to these numbers
CONTROLARM03
Product Information
Product Information
Control Arm 'Coffin Arm' & Wishbone Kit with all associated nuts, bolts and washers.

oematch

front
Porsche 987 Boxster
Porsche 987C Cayman
Porsche 987.2 Boxster
Porsche 987C.2 Cayman
Porsche 997 Carrera & Turbo
Porsche 997.2 Carrera & Turbo

Please note this arm is not an adjustable type (not motorsport - M004 option)

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Related, superseded, cross reference or alternative numbers for comparison.

CONTROLARM03
99734105300
99734105304
99734114300
99134105305
99134105306

The product you are viewing cross references to these numbers
CONTROLARM04
Product Information
Product Information
Control Arm 'Coffin Arm' and Wishbone Kit with all associated nuts, bolts and washers. REAR

oematch

rear
Porsche 987 Boxster *Chassis from:
WP0ZZZ98Z6U703034 >>
WP0ZZZ98Z6U722299 >>
Porsche 987C Cayman *Chassis from:
WP0ZZZ98Z6U774552 >>
WP0ZZZ98Z6U783369 >>

Porsche 987.2 Boxster
Porsche 987C.2 Cayman

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

CONTROLARM04
99634105316
99634105317
99733104505
99631124508
99633124510
99633104505
99633104507
98733114302
98733104304

The product you are viewing cross references to these numbers
99734104302/2KIT
Product Information
Product Information
Control arm lower. (SET OF 2) FRONT

oematch

Fits:
Porsche 987 Boxster 2005-2012 FRONT
Porsche 987C Cayman 2005-2012 FRONT
Porsche 997 2006-2012 FRONT
Porsche 997 TURBO 2007-2013 FRONT

Please click 'Zoom in' to view the diagram.
Diagram ref no. 3

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

99734104302
99734104300
4160500006
99734104302
99734114300

The product you are viewing cross references to these numbers
98733104304/1KIT
Product Information
Product Information
Control arm lower rear. SET OF 2

trw
(TRW are the Original Manufacture for Porsche)

Fits:
Porsche Boxster 987
Porsche Cayman 987C

Please click 'Zoom in' to see the diagram (No 8)

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

98733104304
98733104302
98733114302

The product you are viewing cross references to these numbers
98733104304/4KIT
Product Information
Product Information
Control arm lower, Rear.
This OE Match suspension set includes two rear lower control arms (2 × 98733104304), providing a complete left-and-right replacement for the rear axle of Porsche 987 Boxster and 987 Cayman models. These arms are engineered to replicate the geometry, strength, and bushing characteristics of the original Porsche components, ensuring precise wheel alignment, stable handling, and predictable chassis behaviour.
SET OF 2 - for left and right side.

Fits:
Porsche 987.1 Boxster 2005 - 2008
Porsche 987.2 Boxster 2009 - 2012
Porsche 987C.1 Cayman 2005 - 2008
Porsche 987C.2 Cayman 2009 - 2012 

Diagram ref no 8

This set is ideal for vehicles showing rear-end instability, knocking noises, or alignment issues caused by aged or worn control arm bushings.

•  Part Numbers / Cross-References: 98733104304 (current), 98733104302 / 98733104303 (previous numbers)

• Position: Rear lower control arm / lateral link - connects rear axle assembly to chassis/subframe, controlling wheel lateral and longitudinal position under dynamic loading.

 Functions: Maintains correct wheel alignment geometry under load, ensures stable rear-end handling, helps manage camber and toe changes, absorbs suspension loads, supports consistent tyre contact and handling predictability.

The rear lower control arms maintain correct camber and toe alignment during suspension travel. They stabilise the rear axle under dynamic load and help ensure consistent tyre contact and grip. As a matched pair, they work together to deliver the balanced handling and responsiveness expected from a Porsche mid-engine chassis.

Benefits of replacing as a pair:
 Restores identical suspension behaviour on both sides
 Ensures consistent camber and toe alignment
 Eliminates uneven tyre wear caused by mismatched bushings
 Improves high-speed stability and cornering predictability
 Ideal for full rear suspension refresh or alignment correction

With time, the bushings and joints inside these arms deteriorate, causing unwanted movement, clunks, instability and poor alignment. Replacing both arms ensures complete restoration of rear suspension accuracy, improving handling sharpness, road feel and overall safety.

When to Replace:
 Knocking or clunking noises from the rear over bumps
 Excessive play in rear suspension arms during inspection
 Uneven or premature rear tyre wear
 Alignment cannot be maintained (camber/toe constantly shifting)
 Rear-end feels unstable during cornering or acceleration
 Performing a full suspension overhaul

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

98733104304
98733104302
98733104303
98733104304
98733114302

The product you are viewing cross references to these numbers
99733104505/3KIT
Product Information
Product Information
Control arm rear with ball joint, SET OF 2.
The high-quality replacement built to OE specifications, it delivers the same fit, strength, and performance as the original part. This suspension component connects the wheel hub to the chassis, maintaining proper alignment and ensuring stable handling. 

Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 987 Boxster 2005 - 2012
Porsche 987c Cayman 2006 - 2012
Porsche 996 C2 / C4 1997 - 2005
Porsche 996 Turbo 2000 - 2005
Porsche 996 GT3 1999 - 2005
Porsche 997 MKI 2006 - 2009
Porsche 997 GT3 2006 - 2009

Diagram ref no 13

This product supersedes Porsche's old part numbers:
99633104506, 99633104508, 99633104510, 99633104512, 99733104504 , 99633104512

What this product does:
• Provides a secure connection between the chassis and wheel hub
 Maintains wheel alignment for safe, predictable handling
 Absorbs suspension forces while keeping steering precise

Over time, control arms can bend, wear, or develop excessive play in the bushings and ball joints. This can cause uneven tire wear, knocking noises, wheel alignment issues, and a noticeable loss of steering precision. Replacement will restore the correct wheel alignment and suspension stability for which your Porsche was designed.

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

99733104505
99733104504
99633104506
99633104508
99633104510
99633104512
997.331.045.04
996.331.045.06
996.331.045.08
996.331.045.10
996.331.045.12
99733104505

The product you are viewing cross references to these numbers
99733104505/3KIT.1
Product Information
Product Information
Control arms rear with ball joint & eccentric bolts and washers  SET OF 2 
The high-quality replacement built to OE specifications, it delivers the same fit, strength, and performance as the original part. This suspension component connects the wheel hub to the chassis, maintaining proper alignment and ensuring stable handling. 

Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 987 Boxster 2005 - 2012
Porsche 987c Cayman 2006 - 2012
Porsche 996 C2 / C4 1997 - 2005
Porsche 996 Turbo 2000 - 2005
Porsche 996 GT3 1999 - 2005
Porsche 997 MKI 2006 - 2009
Porsche 997 GT3 2006 - 2009

Diagram ref no 12, 13, 15, 16

This product supersedes Porsche's old part numbers:
99633104506, 99633104508, 99633104510, 99633104512, 99733104504 , 99633104512

What this product does:
• Provides a secure connection between the chassis and wheel hub
 Maintains wheel alignment for safe, predictable handling
 Absorbs suspension forces while keeping steering precise

Over time, control arms can bend, wear, or develop excessive play in the bushings and ball joints. This can cause uneven tire wear, knocking noises, wheel alignment issues, and a noticeable loss of steering precision. Replacement will restore the correct wheel alignment and suspension stability for which your Porsche was designed.

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

99733104505
99733104504
99633104506
99633104508
99633104510
99633104512
997.331.045.04
996.331.045.06
996.331.045.08
996.331.045.10
996.331.045.12
99733104505

The product you are viewing cross references to these numbers
99734353144504/1KIT.2
Product Information
Product Information
This kit consists of four coil springs for the Front & Rear axle. 

Suitable for models with standard suspension (PR 029) but not sports suspension or PASM (PR 475).

Porsche 987-1 Boxster 2.7L 2005*
Porsche 987-1 Boxster S 3.2L 2005*

Porsche 987-1 Boxster 2.7L 2006-08
Porsche 987-1 Boxster S 3.2L 2006 
Porsche 987-1 Boxster S 3.4L 2007-08

Porsche 987-1 Cayman 2.7L 2006-08
Porsche 987-1 Cayman S 3.4L 2006-08

*NOTE - For 2005 model year Boxsters, there is a VIN split:

2.7L models –
 Compatible from VIN F 98-5S700086 onwards (Stuttgart, Germany) and F 98-5U701650 onwards (Uusikaupunki, Finland).
3.2L S models – Compatible from VIN F 98-5S720068 onwards (Stuttgart, Germany) and F 98-5U721707 onwards (Uusikaupunki, Finland).

Diagram ref. 7.

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

99734353144504
99734353138504
99734353144504
98733353182504
98733353120504
98733353156504
98733353149504

The product you are viewing cross references to these numbers
99734353144504/1KIT
Product Information
Product Information
This kit consists of two coil springs for the front axle. 

Suitable for models with standard suspension (PR 029) but not sports suspension or PASM (PR 475).

front
Porsche 987-1 Boxster 2.7L 2005*
Porsche 987-1 Boxster S 3.2L 2005*

Porsche 987-1 Boxster 2.7L 2006-08
Porsche 987-1 Boxster S 3.2L 2006 
Porsche 987-1 Boxster S 3.4L 2007-08

Porsche 987-1 Cayman 2.7L 2006-08
Porsche 987-1 Cayman S 3.4L 2006-08

*NOTE - For 2005 model year Boxsters, there is a VIN split:

2.7L models –
 Compatible from VIN F 98-5S700086 onwards (Stuttgart, Germany) and F 98-5U701650 onwards (Uusikaupunki, Finland).
3.2L S models – Compatible from VIN F 98-5S720068 onwards (Stuttgart, Germany) and F 98-5U721707 onwards (Uusikaupunki, Finland).

Diagram ref. 7.

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

99734353144504
99734353138504
99734353144504

The product you are viewing cross references to these numbers
FRONTSUSPENSIONKIT987-1
Product Information
Product Information
Refresh your 987 Boxster or Cayman's front suspension with this comprehensive kit, including new standard replacement shock absorbers, coil springs, top mounts, dust covers, bump stops, and essential fasteners.

Suitable for models with standard suspension (PR 029) but not sports suspension or PASM (PR 475).

front
Porsche 987-1 Boxster 2.7L 2005*
Porsche 987-1 Boxster S 3.2L 2005*

Porsche 987-1 Boxster 2.7L 2006-08
Porsche 987-1 Boxster S 3.2L 2006 
Porsche 987-1 Boxster S 3.4L 2007-08

Porsche 987-1 Cayman 2.7L 2006-08
Porsche 987-1 Cayman S 3.4L 2006-08

*NOTE - For 2005 model year Boxsters, there is a VIN split:

2.7L models –
 Compatible from VIN F 98-5S700086 onwards (Stuttgart, Germany) and F 98-5U701650 onwards (Uusikaupunki, Finland).
3.2L S models – Compatible from VIN F 98-5S720068 onwards (Stuttgart, Germany) and F 98-5U721707 onwards (Uusikaupunki, Finland).

Kit Contents:
2x OE Match Shock Absorbers (Standard Replacement)
2x OE Match Coil Springs (Standard Replacement)
2x OE Match Top Mounts with Bearings
2x OE Match Coil Spring Support Rings
2x OE Match Shock Absorber Compensating Plates (3mm)
2x OE Match Shock Absorber Compensating Plates (6.5mm)
4x OE Match Upper & Lower Stop Plates / Washers
1x OE Match Bump Stop & Dust Cover Kit
2x OE Match M14 x 1.5 Nuts for Shock Absorber
2x OE Match Cone Washers
6x OE Match M8 Lock Nuts for Top Mounts

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

FRONTSUSPENSIONKIT987-1
98734304702
98734304703
98734304704
98734304705
98734304106
98734304107
98734304108
98634351300
99734301800
99734301801
99908444709
99908444701
PAF003923
99634351701
99634351100
99634351101
99734310701
99734353138504
99734353144504
99634350500
99634330102
90038001209
90038001201
PAF912799
PAF103353
99634351505

The product you are viewing cross references to these numbers
BOLTKIT9971
Product Information
Product Information
Nuts & bolts for control arm 'Coffin Arm' & wishbones
FRONT

porsche

FRONT
Porsche 997
Porsche 987 Boxster >>2007
Porsche 987C Cayman >>2007

Please click 'Zoom in' to view the diagram
Items 4, 5, 7, 9, 10, 11, 12, 22, 25.

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

BOLTKIT9971
90037816501
99908444501
90037832901
90037814509
90037813501
90038001201
90037821109

The product you are viewing cross references to these numbers
BOLTKIT9971.OEM
Product Information
Product Information
Nuts & bolts for control arm 'Coffin Arm' & wishbones
FRONT

FRONT
Porsche 997
Porsche 987 Boxster >>2007
Porsche 987C Cayman >>2007

Please click 'Zoom in' to view the diagram
Items 4, 5, 7, 9, 10, 11, 12, 22, 25.

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

BOLTKIT9971.OEM
90037816501
99908444501
90037832901
90037814509
90037813501
90038001201
90037821109

The product you are viewing cross references to these numbers
98133105302/2KIT
Product Information
Product Information
2 x Slim-Type Rear Control Arms (also known as "Coffin Arm") with Lower Ball Joint. 
The rear control arm (also known as the “coffin arm”) slim type, with lower ball joint) is designed for the rear axle of multiple Porsche models including the 987 Boxster/Cayman, 981 Boxster/Cayman, 718 (982) Boxster/Cayman and 997-series Carrera, Turbo and GT2/GT3.
SET OF 2

Kits includes: 

2 x Rear Control arms (Slim Type) 'Coffin arm' Ref: 98133105302
2 x Eccentric washer for alignment Ref: 99733121703
2 x Rear lower control arm adjust bolt. Ref: 99733121702 
2 x Shock absorber hexagon hut. Ref: 99908444501


rear
Porsche 997 Turbo / GT2 (Excl. RS) 2007 - 2013
Porsche 997 GT3 (Excl. RS) 2007 - 2011
Porsche 997.2 Carrera 2009 - 2012
Porsche 987.2 Boxster 2009 - 2012
Porsche 987.2 Cayman 2009 - 2012
Porsche 981 Boxster / S 2012 - 2016
Porsche 981 Cayman / S 2014 - 2016
Porsche 981 Boxster Spyder 2016
Porsche 718 (982) Boxster 2017>>
Porsche 718 (982) Cayman 2017>>

Must be replaced in pairs
Porsche 997.1 Carrera 2007 - 2009
Porsche 987.1 Boxster 2007 - 2008
Porsche 987.1 Cayman 2007 - 2008

 Position on Vehicle: Rear axle, control arm position linking rear wheel carrier / suspension to chassis, controlling camber, toe and lateral track stability.

Cross-Reference / Alternative Numbers: OE ref part 981 331 053 02; also referenced 99733105301 / 99733105302 / 99733105303 /  98133105300 / 98133105301.

Built to meet factory specification and supplied with a premium ball joint, it restores accurate alignment, improves handling precision and ensures long-term durability.

The rear control arm is a critical component in maintaining rear axle geometry, wheel alignment, and dynamic stability under acceleration, cornering or load. A worn, bent or loose control arm can lead to:
  Rear instability or wandering at speed
  Uneven or rapid tyre wear on the rear axle
  Clunking or knocking noises from the rear suspension
  Loss of alignment control (camber/toe drift).

Replacing the arm ensures the rear suspension operates as intended, restoring precision and safety.

When and why to replace:
You hear a pronounced knock or clunk from the rear suspension when hitting bumps or changing direction.
Rear tyres wear unevenly or you cannot hold rear alignment specification.

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

98133105302
99733105301
99733105302
99733105303
98133105301
98133105300

The product you are viewing cross references to these numbers
SUSPENSIONKIT15
Product Information
Product Information
Shock Absorber Mounting Overhaul Kit FRONT
Price is for EACH SIDE
Please also add top mounts if you required them

porsche

Including shock absorber Bellow, Bump Stop, supporting plate, Compensating plate, Washers & Nut.

Fits:
Porsche 987 Boxster 2005-08
Porsche 987 Boxster 2009-12
Porsche 987C Cayman 2006-08
Porsche 987C Cayman 2009-12
Porsche 997 GEN1 C2
Porsche 997 GEN2 C2 std suspension

Parts Diagram ref No's 2, 4, 5, 6, 8, 9, 10, 11.

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

SUSPENSIONKIT15
90038001201
99737310701
99734310700
99634350100
99634352300
99634352500
99634352501
99634352501
99634351300
99634330102
99634350901
PAF103353
99734310701
99634351505
99634351701
99634351100
99634351101
99634350500

The product you are viewing cross references to these numbers
DISPLAYING 1 to 16 (of 192 products)
1 2 3 4 >>
Also found on these pages
About Suspension & Axle

Porsche Suspension & Axle Parts

Porsche suspension systems are engineered with precision to deliver sharp handling, ride comfort, and maximum performance. Whether on the road or track, your Porsche relies on a finely tuned suspension and axle setup to keep you in control. When components wear out, the ride becomes rough, handling suffers, and safety can be compromised.

At Design911, we supply a full range of suspension and axle parts for classic and modern Porsche models — from shock absorbers and coil springs to control arms and ball joints - helping you maintain your car’s legendary driving dynamics.

 Signs of Worn Shocks or Struts

Shock absorbers and struts are essential for keeping your Porsche stable over bumps and through corners. Some signs they may need replacement include:

  • Excessive Bouncing – car continues to bounce after hitting bumps
  • Poor Cornering Stability – leaning hard into corners, reduced grip
  • Fluid Leaks – damp or oily patches on shocks/struts
  • Uneven Tyre Wear – poor damping leads to increased tyre wear

If left unchecked, worn shocks or struts not only reduce ride comfort but can also compromise safety.

 Common Porsche Suspension Issues

Different Porsche models can face specific suspension-related faults. The most frequent include:

  • Lower Track Control Arm Bushings - Failure causes squeaking noises, uneven tyre wear, and eventually knocking sounds over rough roads.
  • Broken Coil Springs - Seen in models such as the Porsche Boxster. Symptoms include groaning noises when steering and clicking or knocking over bumpy surfaces.
  • Leaking or Worn Shock Absorbers - Identified by damp, oily residue on the shock body. This is one of the most common suspension failures over time.
  • Ball Joint Wear - Worn joints reduce steering precision and can lead to loss of control if ignored.

Fortunately, most of these issues can be resolved by simply replacing the affected parts with OEM or high-quality aftermarket components.

Why Maintain Suspension & Axle Components?

  • Performance – ensure your Porsche handles as designed, with precise cornering and stability
  • Comfort – smoother ride by absorbing bumps and vibrations
  • Safety – worn suspension can increase braking distances and reduce steering control
  • Longevity – prevent excessive tyre wear and protect other connected systems

Why Choose Design911?

  • Extensive Range – shocks, springs, control arms, joints, and full kits
  • OEM & Performance Options – genuine Porsche parts and trusted aftermarket upgrades
  • Classic & Modern Coverage – from early 911s to the latest models
  • Expert Advice – guidance on identifying faults and choosing the right replacements
  • Worldwide Delivery – carefully packed and shipped securely to your door

Explore our Porsche Suspension & Axle range today – from shocks and struts to springs and bushings – and restore the sharp handling and comfort your Porsche was designed to deliver.

Your Porsches Suspension: Explained

In this video, Lawrence from Design 911 takes you on a deep dive into your Porsche's suspension system. Lawrence provides a ...
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