Lowering Specifications
The Traction-S lowering springs lower your Mustang evenly front and rear, creating a balanced appearance while improving weight transfer and chassis dynamics.
| Position | Ride Height Drop |
|---|---|
| Front | 1.75 inches |
| Rear | 1.75 inches |
A 1.75-inch drop significantly reduces factory wheel gap while maintaining sufficient suspension travel for spirited street driving.
Spring Rates
Engineered to increase chassis control without creating an overly harsh ride.
| Position | Spring Rate |
| Front | 10.10 kg/mm (565.7 lbs/in) |
| Rear | 4.93 kg/mm (276 lbs/in) |
The substantially stiffer front spring rate helps reduce front-end dive during braking while improving turn-in response and front-end grip.
Built from Premium SAE 9254 Spring Steel
Godspeed manufactures the Traction-S springs using high-strength SAE 9254 spring wire, a material commonly used in performance suspension systems because of its durability and resistance to fatigue.
Construction features include:
- SAE 9254 spring steel
- Cold-wound manufacturing process
- Multi-stage heat treatment
- Powder-coated finish
- Corrosion-resistant coating
- Designed to resist long-term spring sag
The combination of cold winding and heat treatment helps maintain consistent spring performance throughout years of daily driving and spirited use.
Improve Your Mustang’s Handling
The factory suspension on the 1999-2004 Mustang prioritizes ride comfort, often resulting in noticeable body roll and front-end dive during aggressive driving.
Installing Godspeed Traction-S lowering springs helps improve:
- Reduced body roll
- Sharper steering response
- Improved turn-in
- Reduced brake dive
- Lower center of gravity
- Better cornering stability
- Improved driver confidence
- More aggressive vehicle stance
These improvements are especially noticeable during canyon driving, highway transitions, and spirited weekend driving.
Designed for Street Comfort
Although these are performance-oriented lowering springs, they are engineered to preserve comfortable street manners.
Benefits include:
- Comfortable daily driving
- Reduced suspension float
- Controlled chassis movement
- Improved road feel
- Better overall suspension balance
This makes the Traction-S kit an excellent choice for enthusiasts wanting improved performance without converting the Mustang into an uncomfortable track-only vehicle.
OEM and Performance Shock Compatibility
These springs are designed to work with:
- Factory OEM shocks and struts
- Performance replacement dampers
- Adjustable aftermarket shocks
While OEM dampers can be retained if they are in good condition, pairing these springs with performance shocks will maximize handling and ride quality.
Engineered for Quiet Operation
Godspeed designed the Traction-S series to minimize unwanted suspension noise.
Properly installed springs help prevent:
- Spring rattle
- Suspension clunking
- Coil rubbing
- Excessive movement under load
This results in a quieter suspension system while maintaining predictable handling characteristics.
Installation Information
Estimated Installation Time
2-4 hours
Professional installation is recommended.
Following installation:
- Perform a complete four-wheel alignment.
- Inspect factory shocks and suspension bushings for wear.
- Adjustable caster/camber plates may be beneficial depending on alignment specifications.
Technical Specifications
| Specification | Details |
| Brand | Godspeed Project |
| Product Line | Traction-S Performance |
| Vehicle | 1999-2004 Ford Mustang Coupe |
| Exclusions | Mustang Cobra IRS Models |
| Material | SAE 9254 Spring Steel |
| Construction | Cold-Wound |
| Heat Treatment | Multi-Stage Heat Treated |
| Finish | Powder Coated |
| Front Drop | 1.75 in |
| Rear Drop | 1.75 in |
| Front Spring Rate | 10.10 kg/mm (565.7 lbs/in) |
| Rear Spring Rate | 4.93 kg/mm (276 lbs/in) |
| OEM Shock Compatible | Yes |
| Performance Shock Compatible | Yes |
| Corrosion Resistant | Yes |
| Warranty | Lifetime Limited Warranty |
Frequently Asked Questions
Will these fit my 2003 Mustang GT?
Yes. These springs fit 1999-2004 Mustang Coupes equipped with the solid rear axle, including the GT.
Will these fit a Cobra?
Not if your Cobra is equipped with the factory Independent Rear Suspension (IRS). These springs are designed for solid rear axle (SRA) Mustangs only.
Can I keep my factory shocks?
Yes. These springs are compatible with OEM shocks, although performance dampers are recommended for optimal ride quality and handling.
Will lowering my Mustang improve handling?
Yes. Lowering the vehicle reduces the center of gravity, improving cornering stability, steering response, and reducing body roll.
Is an alignment necessary?
Absolutely. Every suspension height change should be followed by a professional alignment to maximize tire life and handling performance.
Why Buy From Pro Street Online?
At Pro Street Online, we offer genuine performance suspension upgrades backed by enthusiasts who understand chassis tuning and proper suspension setup. Whether you’re restoring a New Edge Mustang or building a street-performance machine, we provide quality parts, expert support, and fast shipping to help you complete your build with confidence.




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