Anti Roll Bar
Anti roll kit, Front and Rear

Front Sway Bar is Solid and 2 Way-Adjustable
EIBACH REAR 25mm ANTI-ROLL Kit
Rear Sway Bar is Tubular and 3 Way-Adjustable.
Fits:
Porsche 997 (911) Carrera RWD 2005-2012 Manual Trans Only
Description:
Manufactured from cold-formed steel alloy for precision performance, and finished with a long lasting red powder coat finish, the ANTI-ROLL-KIT comes complete with all mounting hardware.
• Performance Tuned Handling.
• Further Reduce Body Roll.
• Precision Engineered for PRO-KIT & SPORTLINE Performance Lowering Spring Kits.
• Part of the Eibach PRO-PLUS PRO-SYSTEM-PLUS SPORT-PLUS & SPORT-SYSTEM-PLUS.
• Million-Mile Warranty
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
E40-72-007-05-11
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 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12

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.
For COUPE / CABRIO Cars ONLY!
Fits:
Porsche 997.2 Carrera 2 3.6L COUPE / CABRIO MKII 2009>>2012
Cars With Option Codes:
029 - Standard Chassis
475 - "PASM" Electronic Damper Control
220 - Locking Differential 40%
Porsche 997.2 Carrera 2S 3.8L COUPE / CABRIO 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.
99733370302
The product you are viewing cross references to these numbers
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
In this video, Lawrence from Design 911 walks you through everything you need to know about your Porsche's anti-roll bar. Learn how this crucial component helps to stabilise your vehicle during cornering, enhancing both safety and performance. Lawrence breaks down the function, design, and installation process, ensuring that you're fully informed whether you're a seasoned Porsche enthusiast or just starting to explore the mechanics of your car.
Porsche Anti-Roll Bars | Design911 Suspension Components for Handling & Cornering Stability
Anti-roll bars — also known as sway bars or stabiliser bars — are essential suspension components that reduce body roll during cornering, keeping your Porsche balanced, stable, and predictable. They connect the left and right sides of the suspension system, distributing weight evenly to improve grip and steering precision. Whether on road or track, a properly functioning anti-roll bar ensures your Porsche maintains its signature agility and handling confidence.
At Design911, we offer a full range of anti-roll bars, drop links, and mounting hardware designed for precision fitment and enhanced suspension performance. Manufactured from high-strength steel or lightweight alloys, our anti-roll bars deliver optimal stiffness, durability, and performance. Perfect for servicing, performance tuning, or full suspension restoration, these components enhance control, responsiveness, and driver confidence in all driving conditions.
What Do Anti-Roll Bars Do?
Anti-roll bars work to reduce chassis movement by linking the suspension on both sides of the car, helping maintain flat, stable cornering.
Core Functions:
• Reduce body roll during turns and rapid direction changes.
• Improve steering precision and balance.
• Enhance tyre contact with the road for maximum grip.
• Distribute load evenly across the suspension.
• Maintain predictable handling in performance driving.
A correctly functioning anti-roll bar is key to achieving Porsche’s renowned cornering stability and driving dynamics.
Why Do Anti-Roll Bars Fail or Degrade?
Anti-roll bars and their associated components endure constant torsional stress, road impacts, and environmental exposure — leading to wear or fatigue over time.
Common Causes of Failure Include:
• Worn or cracked anti-roll bar bushes causing excess movement.
• Corrosion or fatigue in the bar or drop links.
• Loose or damaged mounting brackets.
• Degraded rubber isolators or seized joints.
• Stress fractures from aggressive driving or high cornering loads.
When anti-roll bars or their mounts fail, symptoms can include clunking noises, unstable cornering, poor handling response, and uneven tyre wear — making timely replacement crucial for safety and performance.
Why Replace or Upgrade Your Porsche Anti-Roll Bar?
Replacing or upgrading your Porsche’s anti-roll bar restores stability, reduces body roll, and improves overall handling precision. Upgraded materials and adjustable designs allow for fine-tuning performance and chassis balance.
Key Benefits:
• Restores flat, stable cornering and improved traction.
• Enhances steering feedback and chassis balance.
• Reduces body roll and weight transfer.
• Available in standard, reinforced, or adjustable designs.
• Fits Porsche 911, 944, 968, Boxster, Cayman, Cayenne, and Macan models.
• Ideal for performance tuning, servicing, or restoration.
Design911’s Porsche anti-roll bars and suspension components are built for strength, precision, and control — delivering superior handling, comfort, and confidence for every Porsche driver.
Highlights
• Premium Porsche anti-roll bars and drop links.
• High-strength steel and lightweight alloy construction.
• Reduces chassis roll and improves cornering stability.
• Precision-engineered for road and track performance.
• Compatible with classic and modern Porsche models.
• Perfect for restoration, servicing, or performance upgrades.