AUDI GENUINE OEM ORIGINAL FACTORY PART 4B0411309 Front Sport RS6 20MM Suspension Stabilizer Sway Bar End Link

( Brand: Audi Genuine Oem Original Factory Part ), ( Manufacturer Part Number: 4B0411309 ), ( Items Included: Bracket, Bushing, Cup, Mount, Retainer, Sleeve ), ( Color: Black ), ( Item Diameter: Interior ), ( Vintage Part: Yes ), ( Placement On Vehicle: Front, Left, Lower, Right, Upper ), ( Type: Sway Bar Link ), ( Country Of Origin: Germany )

Review AUDI GENUINE OEM ORIGINAL FACTORY PART Rs6 20mm Front Sport Suspension Stabilizer Sway Bar End Link fits A6 S6 C5 1998–2004

The **Audi 4B0411309 20mm Front Sport Suspension Stabilizer Sway Bar End Link** is a precision-engineered component designed exclusively for Audi s high-performance models, including the **A6 (C5), S6, and RS6** from the **1998 to 2004 model years**, as well as the **A6 Quattro (4B)** platform. This end link serves as a critical link in the vehicle s front stabilizer bar system, ensuring optimal handling, stability, and responsiveness under dynamic driving conditions. Crafted from high-grade **chromoly steel**, this end link is built to withstand the rigorous demands of sport-tuned suspensions, providing superior durability while maintaining a sleek, aerodynamic profile. The **20mm diameter** design enhances the sway bar s effectiveness, allowing for sharper cornering and reduced body roll, which is particularly beneficial for enthusiasts who have upgraded to aftermarket suspension components or sport-tuned coilovers. The end link features a **smooth, polished finish** with precise machining to minimize friction and wear, ensuring a long service life even under heavy loads or aggressive driving. Whether installed as part of a full sport suspension upgrade or as a standalone performance enhancement, this end link delivers a noticeable improvement in lateral grip, stability, and overall driving dynamics, making it an essential component for Audi owners seeking to elevate their vehicle s performance without compromising reliability. Its direct-fit compatibility ensures a hassle-free installation, allowing mechanics and DIY enthusiasts to quickly integrate it into the existing stabilizer bar setup, restoring or enhancing the intended handling characteristics of these iconic Audi models.

### **Pros and Cons of Buying a 20mm Front Sport Suspension Stabilizer Sway Bar End Link for an Audi A6 (4B0.411309, 1998 2004) / S6 / RS6 / C5**

This part (a 20mm front sport suspension stabilizer sway bar end link) is a common upgrade for Audi models in this generation, particularly those with stock or slightly modified suspensions. Below is a detailed breakdown of its advantages and drawbacks, followed by a conclusion and recommendation.

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### **Pros**

1. **Improved Handling and Stability**

The sway bar end link connects the sway bar to the control arm, influencing how the suspension reacts to cornering forces. A 20mm (or thicker) end link increases the sway bar s effective diameter, reducing body roll and improving weight transfer during aggressive driving. This is particularly noticeable in high-performance or modified vehicles where stock sway bars may be too soft.

2. **Better Weight Distribution**

Thicker sway bar end links help maintain a more stable front end under heavy braking or acceleration, reducing understeer tendencies. This can be beneficial for drivers who push their vehicles hard or tow heavy loads.

3. **Compatibility with Aftermarket Suspension Upgrades**

If you ve already installed stiffer springs, lower coils, or a lowered suspension, a thicker sway bar end link complements these modifications by reinforcing the sway bar s function. It prevents the sway bar from becoming ineffective due to excessive travel or binding.

4. **Durability and Strength**

The 20mm end link is typically made from high-quality steel or billet aluminum, offering better resistance to fatigue and wear compared to stock parts. This is especially useful if you drive on rough roads or track frequently.

5. **Easy Installation**

Replacing the sway bar end link is a relatively straightforward DIY job that doesn t require specialized tools. Most mechanics charge minimal labor costs for this part, making it an affordable upgrade.

6. **Aesthetic and Performance Synergy**

For enthusiasts who have already invested in sporty suspension components (e.g., sport shocks, coilovers, or sway bar upgrades), a thicker end link ties everything together visually and functionally. It s a subtle but meaningful step toward a more aggressive stance.

7. **Reduced Body Roll in Aggressive Driving**

While not a replacement for a full sway bar upgrade, a thicker end link can still provide noticeable improvements in body control during spirited driving, especially on twisty roads or in light track use.

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### **Cons**

1. **Minimal Impact on Stock Suspensions**

If your Audi s suspension is already stock or only lightly modified (e.g., stock shocks, no coilovers), the benefits of a 20mm end link may be negligible. The sway bar s effectiveness is limited by the rest of the suspension setup, so upgrading just the end link won t drastically change handling.

2. **Potential for Binding or Interference**

In some cases, a thicker end link may rub against other suspension components (e.g., brake calipers, control arm bushings, or wheel wells) if the vehicle has been lowered or modified. This can lead to premature wear or even damage if not addressed.

3. **Cost Relative to Other Upgrades**

While affordable, a 20mm sway bar end link is a modest upgrade compared to other performance parts like coilovers, sway bar links (which connect to the sway bar itself), or bushings. If you re serious about handling improvements, you may want to consider a full sway bar upgrade (e.g., a 25mm or 30mm sway bar) or a complete suspension tune.

4. **Limited Effect on Rear Suspension**

This part only affects the front sway bar. If you re looking for balanced handling improvements, you ll need to address the rear suspension separately (e.g., with a rear sway bar upgrade or stiffer rear springs).

5. **Quality Variability**

Some aftermarket parts may be poorly manufactured, leading to premature failure or inconsistent performance. It s important to source high-quality parts from reputable brands (e.g., Meyle, Febi Bilstein, or OEM-equivalent suppliers) to avoid issues.

6. **May Not Be Necessary for Mild Modifications**

If your suspension modifications are minimal (e.g., sport shocks or a slight lowering), the benefits of a 20mm end link may not justify the cost. In such cases, focusing on other areas (e.g., bushings, alignment, or tire choice) could yield better results.

7. **Installation Can Be Tricky on Some Models**

While generally easy, the Audi A6/S6/C5 platform can have tight clearance in the front suspension, especially near the brake calipers or wheel wells. Improper installation or misalignment can lead to binding or premature wear.

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### **Conclusion**

A 20mm front sport suspension stabilizer sway bar end link is a **low-risk, moderate-benefit upgrade** that is most valuable for Audi enthusiasts who have already made other suspension modifications (e.g., stiffer springs, coilovers, or a lowered ride height). It provides noticeable improvements in stability and body control, particularly in aggressive driving scenarios, but its impact is limited if the rest of the suspension is stock or lightly modified.

For drivers who prioritize **track performance, heavy towing, or spirited driving**, this part is a worthwhile addition to a broader suspension upgrade plan. However, if you re on a budget or only making minor modifications, the benefits may not be significant enough to justify the cost.

If you re considering this upgrade, it s also worth evaluating whether you d benefit more from a **full sway bar upgrade** (e.g., a 25mm or 30mm sway bar) or other suspension components like **bushings, control arms, or sport shocks**, depending on your specific goals.

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### **Recommendation**

- You ve already modified your suspension (e.g., coilovers, stiffer springs, or a lowered ride height).

- You frequently drive aggressively, tow heavy loads, or use your Audi on track-like conditions.

- You want a simple, cost-effective way to improve front-end stability without a full suspension overhaul.

- You source the part from a reputable brand to ensure quality and durability.

- Your suspension is stock or only lightly modified (e.g., sport shocks alone).

- You re on a tight budget and could allocate funds to more impactful upgrades (e.g., sway bar links, bushings, or alignment).

- You re unsure whether the rest of your suspension setup is compatible (e.g., clearance issues with a lowered vehicle).

- You plan to make further suspension modifications in the near future (e.g., a full sway bar upgrade), as the benefits may overlap.

**Final Verdict:** The 20mm sway bar end link is a **solid mid-tier upgrade** that pays off for those with modified suspensions but may not be worth it for stock or minimally modified vehicles. Pair it with other suspension components for the best results. Always ensure proper installation and compatibility with your vehicle s current setup.

Details:

Some vehicle fitments may vary like 1998 to 2002 A6 and S6 model's. Working perfectly clean condition came off of a 2004 Audi RS6, Genuine OEM Original Factory Part. Fits 2003 to 2004 Audi RS6 4.2 V8 Bi-Turbo Twin Turbo 4.2TT C5 Sedan / Hatchback Station wagon Avaunt model's. Part # for 20mm Standard Comfort and Dynamic Sport Spring Suspension Undercarriage Front Left Driver Right Passenger Side Lower Quarto AWD Wheel Drive train Stabilizer Sway Bar End Link Steering Rubber Joint Bracket Mount Holder is: 4B0411309, 4B0411309F.

part #: 4b0411309 prices

• $137.51-$300.00

specifications swabasus:

• for models: A6, S6, C5
• for makes: Audi
• for years: 1998-2004
• brand: Audi Genuine Oem Original Factory Part
• mpn: 4b0411309
• items included: Bracket, Bushing, Cup, Mount, Retainer, Sleeve
• color: Black
• item diameter: Interior
• vintage part: Yes
• placement on vehicle: Front, Left, Lower, Right, Upper
• type: Sway Bar Link
• country of origin: Germany

general swabasus:

• condition: Used
• Car Truck Parts Accessories > Steering Suspension > Sway Bars, Links Bushings

returns swabasus:

• policy: No Returns

offer swabasus:

• best offers: True
• quantity: 1
• sold: 0
• options: Ship-to-home
• started: March 14, 2026
• availability: In Stock

payments swabasus:

• wallet: Paypal
• credit card: Diners-club
• other

seller swabasus:

• city: Fort Lauderdale, Florida
• # reviews: 496
• rating: 100.0%

shipping swabasus:

• type: Calculated
• service: USPS Ground Advantage, FedEx Ground / FedEx Home Delivery, UPS Ground
• class: Standard
• cost: $153.80
• transit: 6-12 Days
• carrier: USPS, FedEx, UPS

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