Complete Guide to 2011 Dodge Challenger SRT8 Suspension Parts

If you own a 2011 Dodge Challenger SRT8, you know it's a powerful muscle car with a heavy curb weight. Upgrading the suspension can transform its handling, reduce body roll, and deliver a more controlled ride. Whether you're looking to replace worn components or improve performance, this guide covers the essential suspension parts for your 2011 Challenger SRT8.

Understanding the 2011 Challenger SRT8 Suspension

The factory suspension on the 2011 SRT8 uses a front short-long arm (SLA) design and a rear multi-link independent setup. It's tuned for a balance of comfort and performance, but many owners find it too soft for aggressive driving. Common issues include excessive nose dive under braking, body roll in corners, and a floaty feel at high speeds. Upgrading specific parts can address these problems without sacrificing daily drivability.

Coilover Kits

Benefits of Coilovers

Coilovers replace the entire strut and spring assembly with a height-adjustable unit. For the 2011 Challenger SRT8, a coilover kit allows you to lower the ride height for improved aerodynamics and lower center of gravity. Most kits offer adjustable damping (rebound and compression) so you can fine-tune the ride stiffness. This is ideal for track days or spirited street driving.

Top Considerations

• Ride Height Range: Look for a kit that offers 1-2 inches of drop to maintain proper suspension geometry.
• Damping Adjustability: Single-adjustable (rebound) is sufficient for street use; double-adjustable (rebound and compression) is better for track use.
• Spring Rates: Higher spring rates reduce body roll but make the ride firmer. Aim for around 450-550 lb/in front and 300-400 lb/in rear for a balance.
• Brand Reputation: Established brands like KW, Bilstein, or BC Racing offer reliable products. Avoid unbranded or generic kits.

Shocks and Struts

If you prefer to keep the factory springs or use aftermarket lowering springs, upgrading just the shocks and struts can make a noticeable difference. The 2011 SRT8 uses monotube shocks in the front and rear.

Options

• Bilstein B8: A performance shock designed for lowered cars. They provide better damping than stock without being harsh.
• Koni Sport (Yellow): Adjustable rebound damping, allowing you to soften or stiffen as needed. They are rebuildable and popular among enthusiasts.
• Stock Replacement: If your original shocks are worn (leaking, bouncy), OEM replacements from Mopar are a direct fit but don't improve performance.

Lowering Springs

Lowering springs are a cost-effective way to reduce the gap between the tire and fender and improve handling. They typically lower the car 1-1.5 inches.

Popular Choices

• Eibach Pro-Kit: Progressive rate springs that offer a moderate drop and improved ride quality. Good for daily driving.
• H&R Sport Springs: Lower more aggressively (about 1.5 inches) and have a stiffer rate. They reduce body roll significantly but may be harsh on rough roads.
• Mopar Stage 1: Factory-backed springs that maintain some comfort while lowering slightly.

Important Note

Lowering springs should be paired with shocks that can handle the increased rate. Stock shocks may wear out quickly with aftermarket springs.

Sway Bars (Anti-Roll Bars)

Sway bars reduce body roll during cornering. The 2011 Challenger SRT8 comes with hollow stock bars from the factory, but upgrading to thicker, solid bars makes a big difference.

Front and Rear Setup

• Front Sway Bar: 30mm to 32mm solid bar is common. A thicker front bar reduces understeer but can increase oversteer if too stiff.
• Rear Sway Bar: 22mm to 25mm solid bar helps rotate the car and reduce understeer.
• Adjustable Links: Allow you to fine-tune sway bar stiffness by using different mounting holes.

Recommendations

• Hotchkis Sport Sway Bars: A matched front and rear kit designed for the Challenger. They come with polyurethane bushings.
• BMR Suspension: Offers adjustable sway bars with multiple stiffness settings.
• Whiteline: Provides heavy-duty sway bars with greaseable bushings.

Control Arms and Bushings

Front Control Arms

The front upper and lower control arms have rubber bushings that flex under load, causing vague steering and alignment changes. Upgrading to polyurethane or spherical bushings reduces deflection and improves steering response.

• Adjustable Upper Control Arms: Allow you to adjust camber and caster for better cornering grip. Recommended if you lower the car significantly.
• Lower Control Arms: Usually don't need replacement unless the ball joint is worn. You can press in polyurethane bushings instead.

Rear Suspension Components

The rear multi-link system has many bushings that wear over time. The rear knuckle, toe links, and trailing arms benefit from stiffer bushings.

• Toe Links: Adjustable toe links let you fine-tune rear toe alignment, which is crucial for stability.
• Trailing Arms: Upgraded trailing arms with polyurethane bushings reduce wheel hop during hard acceleration.
• Cradle Bushings: The rear subframe is mounted with soft rubber. Replace with solid or polyurethane bushings to eliminate rear-end movement.

Other Important Parts

Strut Tower Braces

A front strut tower brace ties the two strut towers together, reducing chassis flex in corners. This is a worthwhile upgrade for the Challenger's heavy body. Look for a three-point brace that also connects to the firewall for maximum stiffness.

Camber/Caster Plates

If you install coilovers or lower the car significantly, you may need adjustable camber plates for the front. They increase negative camber (tilt the top of the tire inward) for better cornering grip and prevent premature tire wear.

Steering Components

Worn tie rods or ball joints can cause sloppy steering. Check them during suspension work. Upgraded tie rods with adjustable ends are available from Moog or brand-specific options.

Practical Buying Guidance

• Assess Your Needs: Are you tracking the car, daily driving, or just want a lower look? This determines the parts you need.
• Budget: Coilovers ($1,000–$2,500) > shocks/struts + springs ($500–$1,200) > sway bars ($300–$600) > bushings ($100–$400).
• Installation: Some parts like coilovers are DIY-friendly with basic tools, but control arms and alignments require professional help. Factor in labor costs.
• Alignment: After any suspension change, get a professional alignment to avoid tire wear and ensure safe handling.
• Warranty: Genuine Mopar parts come with a factory warranty, while aftermarket brands vary. Choose reputable brands with good customer support.

Final Recommendation

For a balanced upgrade on a 2011 Dodge Challenger SRT8 used primarily on the street with occasional spirited driving, start with a set of Bilstein B8 shocks and Eibach Pro-Kit springs. This combination lowers the car about 1.2 inches, reduces body roll, and improves ride quality over stock. Add a Hotchkis front and rear sway bar kit for further roll control. If you have a larger budget, consider a full KW V2 coilover system for maximum adjustability and performance. Always pair any suspension changes with a proper alignment to get the most out of your new parts.