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Porsche > 996 (911) (1997-2005) > 996 C4S 3.6L 09/01-2005 > Suspension Upgrades >

Anti Roll Sway Bar

Anti Roll Sway Bar

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DISPLAYING 1 to 10 (of 10 products)
Anti roll bar bush Rear 20mm for Porsche 996 / 997 / Boxster / Cayman - PFR57-510-20BLK, 99633379225
2
Anti roll bar bush Rear 20mm for Porsche 996 / 997 / Boxster / Cayman
Special Offer
PFR57-510-20BLK
Product Information
Product Information
Powerflex Black series Anti Roll Bar Bush Rear
Sold as a pair


Size: 20mm

OEM Part Number: 99633379225

powerflexblk

Fits:
Please choose by size
Porsche 997 inc. Turbo
Porsche 996 1997-2005
Porsche 986 Boxster 1997-2004
Porsche 987 Boxster 2005-2012
Porsche 987C Cayman 2005-2012

Click 'Zoom in' for large parts diagram.
Diagram ref No 2.

Powerflex Black Series - Designed for the Track - Ready to Race - Engineered to be the best.

Powerflex Black Series bushes are manufactured using a 95 Shore A compound to provide maximum control of chassis geometry. This compound can be up to 80% more resistant to load than standard rubber and 25% stiffer than our purple performance material.

If your requirements are purely for the ultimate in handling and chassis performance then Powerflex Black Series are unique, offering the most precise and accurate alignment for your chassis.

Replacing your car rubber suspension bushes with Polyurethane Suspension Bushes will give you:

- Better road holding
- Constant steering geometry
- Increased tyre life
- More responsive steering
- Longer service life of suspension components



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Related, superseded, cross reference or alternative numbers for comparison.

PFR57-510-20BLK
PFR57-510-20BLK
99633379225

The product you are viewing cross references to these numbers
Anti roll Kit, Front & rear sway bars. Porsche 996 C4 / 996 Turbo Eibach - 7215-320, 99634370109, 99634370122, 99634370300, 99634370303, 99633370112, 99633370125, 99633370126
5
Anti roll Kit, Front & rear sway bars. Porsche 996 C4 / 996 Turbo Eibach
7215-320
Product Information
Product Information
Anti roll Kit, Front & rear sway bars.

eibach

Front Bar: Diameter 24 mm  / Rear Bar: Diameter 24 mm
Please note: Front Sway Bar is Solid and Non-Adjustable/ Rear Sway Bar is Solid and 3 Way-Adjustable.

Fits:
Porsche 996 C4 
Porsche 996 Turbo 

Manufactured from cold-formed, high strength aircraft-grade steel for precision performance, and finished with a long-lasting red powder coat finish.
The Anti-Roll-Kit comes complete with bushes.


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

7215-320
7215-320
99634370109
99634370122
99634370300
99634370303
99633370112
99633370125
99633370126

The product you are viewing cross references to these numbers
Front anti roll bar bush 23.5mm. Porsche 986 Boxster / 996 / 997 - PFF57-501-23.5, 99634379212
2
Front anti roll bar bush 23.5mm. Porsche 986 Boxster / 996 / 997
Special Offer
PFF57-501-23.5::4
Product Information
Product Information
Front anti roll bar bush 23.5mm.

Sold as a pair 

OEM Part Number: 99634379212

Note: Please check anti roll bar diameter before ordering.

powerflex

Fits:
Porsche 986 Boxster 2.5L 1997-99 *M030 FRONT
Porsche 986 Boxster 2.7L 2000>> *M030 FRONT
Porsche 986 Boxster S 3.2L 2000>> **I029 FRONT

Porsche 987 Boxster 2.7L 2005-08 TIPTRONIC **I029 FRONT

Porsche 996 Carrera 1998-05 C2 COUPE TIPTRONIC FRONT
Porsche 996 Carrera 1998-05 C2 COUPE *M030 FRONT
Porsche 996 Carrera 1998-05 CABRIO FRONT
Porsche 996 Carrera 1998-05 TARGA MANUAL FRONT
Porsche 996 Carrera 1998-05 C4 *M030 FRONT
Porsche 996 Carrera 2001-05 C4S FRONT
Porsche 996 Turbo 2001-05 Standard Chassis FRONT

Porsche 997 MKI Carrera 2005-08 C2 MANUAL **I029 FRONT
Porsche 997 MKI Carrera 2005-08 C4 WITH PASM FRONT
Porsche 997 MKI Carrera 2005-08 C4S WITH PASM FRONT
Porsche 997 MKI Carrera 2005-08 TARGA WITH PASM FRONT
Porsche 997 MKI Turbo 2008-09 FRONT

* M030 - Cars with Sport-type chassis
** I029 - Cars with Standard chassis


Click 'Zoom in' for large parts diagram.
Diagram Ref No 2.

Powerflex. Replacing your car rubber suspension bushes with Polyurethane Suspension Bushes will give you:

- Better road holding
- Constant steering geometry
- Increased tyre life
- More responsive steering
- Longer service life of suspension components



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

PFF57-501-23.5
PFF57-501-23.5
99634379212

The product you are viewing cross references to these numbers
H&R Anti Roll Bar / Sway Bar Kit. Porsche 996 C4/C4S/996T (F 25mm R 24mm) - 99634370300, 99634370302, 99634370303, 99634370304, 99633370503, 99633370505, 99633370504, 99633370506, 99633370112, 99633370125, 99633370126, 99633370120, 99633370127
1
H&R Anti Roll Bar / Sway Bar Kit. Porsche 996 C4/C4S/996T (F 25mm R 24mm)
Special Offer
33462-1
Product Information
Product Information
H&R Sway Bars are the perfect compliment to H&R Springs, Coil Overs, Performance Shocks and Cup Kits.

hr

Front & Rear Anti Roll Bar:
- Front - 25mm (adjustable in 3 places)
- Rear - 24mm (adjustable in 2 places)

Fits:
Porsche 996 C4 / C4S 09/1998>>
Porsche 996 Turbo 09/1998>>

Designed to reduce body roll, increase lateral stiffness and improve handling. All H&R Sway Bar kits have been shot peened and heat treated, and feature precision forged ends - many applications have multiple end link mounting points for adjustability. Also included are H&R exclusive bushings made from a Urethane / Teflon composite that eliminates squeaks, and don't require lubrication. Ever. That means no mess, no maintenance-just bolt in H&R Sway Bars and go!
H&R Sway Bars are 100% made in Germany, and are powder coated for long lasting good looks and durability on the street and track.

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

33462-1
99634370300
99634370302
99634370303
99634370304
99633370503
99633370505
99633370504
99633370506
99633370112
99633370125
99633370126
99633370120
99633370127

The product you are viewing cross references to these numbers
Lateral support clamp anti roll bar. Various sizes for Porsche - PFC13-14, PFC15-16, PFC17-18, PFC19-20, PFC21-22, PFC23-24, PFC25-27, PFC31-33, PFC28-30
3
Lateral support clamp anti roll bar. Various sizes for Porsche
PFC
Product Information
Product Information
Lateral support clamp anti roll bar. 

powerflex

Anti-Roll Bars (ARB’s) play an important role in a vehicle’s suspension system, helping to reduce body roll by transferring cornering load from one side of a vehicle to the other.

Often mounted to the vehicle’s chassis with rubber bushes, these bushes ensure the bar works as intended. To prevent the anti-roll bar from moving laterally within its mounts when turning, OE manufacturers will either bond the bushes to the bar, add dead-stops to the bar itself, or rely solely on the clamping pressure of the rubber.

But what happens when those bushes wear and need to be replaced? Often anti-roll bars with bonded bushes come as a costly complete assembly, so the alternative is to fit a more cost-effective unbonded polyurethane replacement, like the many we offer.

In most cases, friction from the bush will prevent any side-to-side bar movement. Still, when turning aggressively or cornering at higher speeds, a laterally shifting anti-roll bar decreases the efficiency and effectiveness of the bar, changing the dynamics of your suspension system in unpredictable ways. It also poses the risk of the bar fouling on other areas of the vehicle or suspension system.


Stabilizer Bar Bush FRONT. Porsche 996 / 997 / 986 Boxster SuperPro - SPF3721-24.5K, SPF3721-25.5K, SPF3721-25K, SPF3721-25K, SPF3721-27K, SPF3722-27.5K
2
Stabilizer Bar Bush FRONT. Porsche 996 / 997 / 986 Boxster SuperPro
Special Offer
SPF3721-
Product Information
Product Information
SuperPro Stabilizer Bar Bush. FRONT
Set of 2.

superpro

Fits:
Porsche 996 1997-2005
Porsche 997 2004>>
Porsche 986 Boxster 1997-04

Replacing your car rubber suspension bushes with Polyurethane Suspension Bushes will give you:

- Better road holding
- Constant steering geometry
- Increased tyre life
- More responsive steering
- Longer service life of suspension components

Diagram Ref No 2. fits inside Ref No. 3
Stabilizer bar bush Rear 21mm for Porsche 996 / 997 - PFR57-510-21BLK, 99633379226
2
Stabilizer bar bush Rear 21mm for Porsche 996 / 997
Special Offer
PFR57-510-21BLK
Product Information
Product Information
Powerflex Black series Stabilizer Bar Bush Rear
Sold as a pair

Size: 21mm

OEM Part Number: 99633379226

powerflexblk

Fits:
Porsche 996 C2/C4/C4S - Please choose by size
Porsche 996 GT2
Porsche 997 C2/C2S/C4/C4S MKI - Please choose by size

Click 'Zoom in' for large parts diagram.
Diagram ref No 2.

Powerflex Black Series - Designed for the Track - Ready to Race - Engineered to be the best.

Powerflex Black Series bushes are manufactured using a 95 Shore A compound to provide maximum control of chassis geometry. This compound can be up to 80% more resistant to load than standard rubber and 25% stiffer than our purple performance material.

If your requirements are purely for the ultimate in handling and chassis performance then Powerflex Black Series are unique, offering the most precise and accurate alignment for your chassis.

Replacing your car rubber suspension bushes with Polyurethane Suspension Bushes will give you:

- Better road holding
- Constant steering geometry
- Increased tyre life
- More responsive steering
- Longer service life of suspension components

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

PFR57-510-21BLK
PFR57-510-21BLK
99633379226

The product you are viewing cross references to these numbers
Stabilizer bar bush Rear 22mm for motorsport. Porsche 996 - 99633379226 - PFR57-510-22BLK
2
Stabilizer bar bush Rear 22mm for motorsport. Porsche 996
PFR57-510-22BLK
Product Information
Product Information
Powerflex Black series Stabilizer Bar Bush Rear
Sold as a pair

Size: 22mm - For Motorsport Use

powerflexblk

Fits:
Porsche 996 C2/C4/C4S - Please choose by size
Porsche 996 GT2

Click 'Zoom in' for large parts diagram.
Diagram ref No 2.

Powerflex Black Series - Designed for the Track - Ready to Race - Engineered to be the best.

Powerflex Black Series bushes are manufactured using a 95 Shore A compound to provide maximum control of chassis geometry. This compound can be up to 80% more resistant to load than standard rubber and 25% stiffer than our purple performance material.

If your requirements are purely for the ultimate in handling and chassis performance then Powerflex Black Series are unique, offering the most precise and accurate alignment for your chassis.

Replacing your car rubber suspension bushes with Polyurethane Suspension Bushes will give you:

- Better road holding
- Constant steering geometry
- Increased tyre life
- More responsive steering
- Longer service life of suspension components

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

PFR57-510-22BLK
99633379226

The product you are viewing cross references to these numbers
Stabilizer bar bush Rear 22mm. Porsche 996 - 99633379226 - PFR57-510-22
2
Stabilizer bar bush Rear 22mm. Porsche 996
Special Offer
PFR57-510-22
Product Information
Product Information
Powerflex Black series Stabilizer Bar Bush Rear
Sold as a pair

Size: 22mm - Road Series

powerflex

Fits:
Porsche 996 C2/C4/C4S - Please choose by size
Porsche 996 GT2

Click 'Zoom in' for large parts diagram.
Diagram ref No 2.

Powerflex. Replacing your car rubber suspension bushes with Polyurethane Suspension Bushes will give you:

- Better road holding
- Constant steering geometry
- Increased tyre life
- More responsive steering
- Longer service life of suspension components



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

PFR57-510-22
99633379226

The product you are viewing cross references to these numbers
Stabilizer Bar Bush REAR. Porsche 996 / 997 / 986 Boxster SuperPro - 99633379224, 99633379226 - SPF3722-19.5K, SPF3722-19K, SPF3722-21.5K, SPF3722-21K, SPF3722-22K, SPF3722-24.5K, SPF3722-24K
3
Stabilizer Bar Bush REAR. Porsche 996 / 997 / 986 Boxster SuperPro
Special Offer
SPF3722-
Product Information
Product Information
SuperPro Stabilizer Bar Bush. REAR.
Set of 2.

superpro

Fits:
Porsche 996 1997-2005
Porsche 997 2004>>
Porsche 986 Boxster 1997-04

Replacing your car rubber suspension bushes with Polyurethane Suspension Bushes will give you:

- Better road holding
- Constant steering geometry
- Increased tyre life
- More responsive steering
- Longer service life of suspension components

Diagram Ref No 2. fits inside Ref No. 3

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

SPF3722-
99633379224
99633379226

The product you are viewing cross references to these numbers
DISPLAYING 1 to 10 (of 10 products)
Also found on these pages
About Anti Roll Sway Bar

Anti Roll Bars / Sway Bars – Improved Handling and Body Control

Anti roll bars, also known as sway bars, are suspension upgrade components designed to reduce body roll during cornering and improve overall vehicle stability. By linking the left and right sides of the suspension, anti roll bars resist excessive chassis movement, helping the car stay flatter through corners and delivering sharper, more predictable handling.

At Design911, our range of anti roll bars includes high-quality OE replacement and performance upgrade options from trusted suspension brands. Whether you’re refreshing worn factory components or upgrading for fast-road and track use, anti roll bars are one of the most effective ways to enhance handling without compromising ride comfort.

What Do Anti Roll Bars / Sway Bars Do?

Anti roll bars are torsion bars mounted across the suspension axle that control lateral body movement when cornering. Their main functions include:

  • Reducing body roll during turns
  • Improving cornering balance and grip
  • Enhancing steering response and driver confidence
  • Distributing load more evenly across the suspension

By limiting excessive chassis lean, sway bars allow tyres to maintain better contact with the road, improving traction and control.

Why Upgrade Your Anti Roll Bars?

Upgrading anti roll bars is a popular suspension modification because it offers:

  • Noticeable handling improvements with minimal impact on ride comfort
  • Better control during spirited driving or track use
  • Improved balance between front and rear suspension
  • Reduced understeer or oversteer when correctly matched

Performance anti roll bars are often adjustable, allowing fine-tuning of suspension balance to suit driving style, tyre choice and road conditions.

When Should You Replace or Upgrade Anti Roll Bars?

Anti roll bars should be replaced or upgraded when:

  • Factory suspension feels soft or unstable during cornering
  • Rubber bushes or mounting hardware are worn or damaged
  • Upgrading other suspension components such as springs or dampers
  • Preparing a vehicle for fast-road, track day or performance use

Replacing tired components or upgrading to performance sway bars restores precise handling and improves overall driving enjoyment.

At Design911, we supply anti roll bars and suspension upgrades that meet professional workshop standards and enthusiast expectations.

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