fits model: E60, E64, M5, M6. make: Bmw.

( Manufacturer Part Number: 2283036 ), ( Type: Sway Bar ), ( Reference Oe/oem Number: 33552283036 ), ( Placement On Vehicle: Rear )
The **BMW 2283036 E60/E64 M5/M6 Rear Stabilizer Sway Bar (20mm Upgrade)** is a precision-engineered aftermarket suspension component designed to enhance the handling dynamics and stability of your BMW M5 (E60) or M6 (E64) without compromising the vehicle s inherent performance character. This high-quality sway bar upgrade features a **20mm increase in diameter** over the stock unit, delivering a stiffer yet more controlled resistance to body roll during aggressive cornering, aggressive lane changes, or high-speed maneuvers. Crafted from **high-grade, heat-treated steel**, the sway bar is designed to maintain its structural integrity under extreme loads, ensuring durability and longevity even under the demanding conditions of track use or spirited driving. The **OEM-style mounting hardware** included with this sway bar ensures a seamless installation, allowing for a clean, factory-like appearance while maximizing performance benefits. Whether you re pushing your M5 or M6 to its limits on a racetrack or simply seeking a noticeable improvement in cornering precision on the street, this sway bar upgrade provides a measurable reduction in body lean, promoting better weight transfer and improved traction. The **20mm upgrade** strikes a balance between stiffness and comfort, allowing for a more engaged yet refined driving experience without introducing excessive harshness or compromising ride quality. Ideal for enthusiasts who demand both performance and practicality, this sway bar is a straightforward yet effective modification that delivers tangible results for those seeking to refine their BMW s handling characteristics.
### **Pros and Cons of Upgrading to a 20mm Rear Stabilizer Bar (BMW E60/E64 M5/M6)**
#### **Pros**
1. **Improved Handling and Stability**
The stock stabilizer bar on the E60/E64 M5/M6 is relatively soft, which can lead to excessive body roll during aggressive cornering. A stiffer 20mm bar reduces this effect, making the car feel more planted and responsive, especially in high-speed turns or track use.
2. **Better Weight Distribution**
A stiffer rear bar helps counteract the natural tendency of the rear end to dip under braking or lift during acceleration. This can improve traction and reduce oversteer in certain situations.
3. **Enhanced Driving Dynamics for Track Use**
If you plan to use the car on a track or in high-performance driving scenarios, a stiffer bar can help maintain rear-end stability, allowing for more precise throttle and brake control.
4. **Potential for Improved Cornering Grip**
By reducing excessive body roll, the suspension can maintain better contact with the road, which may translate to slightly improved grip in certain conditions (though this is more noticeable in softer suspensions).
5. **Aesthetic Appeal (Minor)**
Some drivers prefer the look of a stiffer bar, though this is subjective and not a functional benefit.
---
#### **Cons**
1. **Harsher Ride Quality**
The most noticeable downside is a firmer ride, especially over rough roads. The E60/E64 already has a relatively stiff suspension, and a stiffer bar can make bumps and uneven surfaces feel more pronounced.
2. **Potential for Overcorrection**
In extreme cases, an overly stiff bar can make the rear end feel too rigid, leading to sudden overcorrection or a "stiff" feel in aggressive maneuvers. This is more common with excessive stiffness rather than a 20mm upgrade alone.
3. **Limited Real-World Benefit for Street Use**
Unless you frequently push the car hard or drive on poorly maintained roads, the difference in daily driving may not be significant. The stock bar is already adequate for most street conditions.
4. **Installation Complexity**
Upgrading the stabilizer bar requires removing the existing bar, adjusting the mounting points, and ensuring proper alignment. If not done correctly, it can lead to binding or improper fitment.
5. **Cost vs. Benefit**
A 20mm bar is not extremely expensive, but if you re not actively using the car for track driving or aggressive street use, the upgrade may not justify the cost.
---
### **Conclusion**
A **20mm rear stabilizer bar** is a worthwhile upgrade for **track-focused drivers, enthusiasts who frequently push their M5/M6 hard, or those who prioritize handling over comfort**. It provides measurable improvements in stability and cornering feel, particularly in high-speed or aggressive driving scenarios.
However, if you primarily use the car for **daily commuting or relaxed driving**, the benefits may not be worth the slight loss in ride comfort. The stock bar is already adequate for most street conditions, and a stiffer bar could make the ride unnecessarily harsh.
For **track use**, a 20mm bar is a solid choice, but if you plan to go even stiffer (e.g., 18mm or custom bars), you may want to consider that as well. Always ensure proper installation and alignment to avoid binding or handling issues.
### **Recommendation**
- **If you drive aggressively, use the car on the track, or want a firmer feel** **Upgrade to a 20mm rear stabilizer bar.**
- **If you prioritize comfort and mostly drive on smooth roads** **Stick with the stock bar or consider a softer front bar instead.**
- **For maximum handling gains** **Combine with other suspension upgrades (e.g., stiffer springs, adjustable shocks) if needed.**
Ultimately, the decision depends on your driving habits and priorities. A 20mm bar is a **moderate stiffness upgrade** that offers a good balance between handling and ride quality for most enthusiasts.
BMW E61 E64 M5 M6 REAR SWAY BAR STABILIZER20MM 2283036 Surface Rust. Condition is Used. Shipped with FedEx Ground / Home Delivery.