QA1 MS401-10450C Pro Coil Single 806990158505 64-66

( Brand: Qa1 ), ( Manufacturer Part Number: MS401-10450C ), ( Placement On Vehicle: Front ), ( Type: Coilovers ), ( Item Width: 14.200 ), ( Color: Silver ), ( Item Length: 29.20 ), ( Material: Aluminum ), ( California Prop 65 Warning: True ), ( UPC: 806990158505 )

Review QA1 64-66 Pro Coil System Single Adjustable fits MUSTANG

The QA1 MS401-10450C 64-66 Mustang Pro Coil Single is a high-performance suspension component designed specifically for the 1964-1966 Ford Mustang. This coil spring provides superior handling and ride quality to enhance the driving experience of your classic Mustang.

This coil spring is manufactured using chrome silicon steel, which ensures strength, durability, and consistency in its performance. The spring rate is 401 pounds per inch (lbs/in), making it ideal for heavy-duty applications or for those seeking a stiffer ride. The spring design is a progressive rate, meaning it provides more support at the lower end of the travel for better control and less sag, while offering a more comfortable ride at higher compression.

The QA1 MS401-10450C is engineered to be a direct replacement for the factory coil springs. Its needle bearing design utilizes bronze bushings, which eliminate the need for sway bar disconnects and offer a smooth, quiet operation. The spring also has a 1.75-inch diameter, ensuring proper fitment and compatibility with other suspension components.

Installation of the QA1 MS401-10450C is relatively straightforward, and it requires no modifications to the vehicle. The spring comes with new shock absorbers, making it a complete suspension upgrade for your classic Mustang. QA1 offers a variety of shocks to suit different driving styles and preferences, so you can choose the one that best fits your needs.

In summary, the QA1 MS401-10450C 64-66 Mustang Pro Coil Single is a high-quality, performance-enhancing suspension component designed specifically for the classic Ford Mustang. Its strength, durability, and progressive rate design provide superior handling and ride quality, making it an excellent choice for enthusiasts looking to upgrade their suspension system.

The QA1 MS401-10450C 64-66 Mustang Pro Coil Single is a performance suspension component designed to enhance the handling and ride quality of classic Mustang vehicles. Here are some potential pros and cons of buying this product:

1. Improved Handling: The QA1 coil over kit provides adjustable ride height and spring rate, allowing for better handling and control, especially during high-speed cornering.

2. Customization: The adjustable springs and ride height allow users to fine-tune the suspension to their specific driving style and preference.

3. Durability: QA1 is known for manufacturing high-quality suspension components, and this coil over kit is no exception. It is built to withstand the rigors of high-performance driving.

4. Easy Installation: The kit comes with all necessary hardware and instructions for a relatively easy installation process.

5. Improved Ride Quality: The adjustable springs and damping allow for a more comfortable ride, even during aggressive driving.

1. Cost: The QA1 MS401-10450C 64-66 Mustang Pro Coil Single is a premium suspension component, and the cost may be a barrier for some buyers.

2. Complexity: Adjusting the ride height and spring rate requires some mechanical knowledge and experience.

3. Potential Compatibility Issues: Ensure that this kit is compatible with your specific Mustang model and year before purchasing.

In conclusion, the QA1 MS401-10450C 64-66 Mustang Pro Coil Single is a high-performance suspension component that offers improved handling, customization, durability, easy installation, and a more comfortable ride. However, it comes with a higher cost, complexity, and potential compatibility issues. If you are a Mustang enthusiast looking to enhance the performance and handling of your classic Mustang, this coil over kit may be an excellent investment. However, consider your budget, mechanical skills, and compatibility concerns before making a purchase.

Recommendation: If you are looking to improve the handling and ride quality of your classic Mustang and have the budget and mechanical skills, the QA1 MS401-10450C 64-66 Mustang Pro Coil Single is a recommended suspension upgrade. However, if you are on a tight budget or prefer a more straightforward suspension upgrade, there are other options available in the market. Consider researching other suspension component manufacturers and their offerings to find the best fit for your Mustang and driving style.

Details:

Specs Position Front Spring Rate 450 lbs. Made in the USA. High Travel Springs. Sold in Pairs.

Part # MS401-10450C Condition New Brand QA1 Sold Kit Details Pro Coil Systems for 1964-1973 Mustangs are a great option anyone looking fully adjustable ride height and valving control. Easy, Bolt-In Installation, Ride height Adjustable. Headquarters. Shock Adjust ability Single Adjustable Body Material Aluminum Upper Mount Bushed Eyelet Lower T-Bar height Yes Spring length 10 Inch Number of Valving Selections 18 Finish Powder Coated Coilover Springs Included Bushing Polyurethane Sold in Quantity Pair Hardware Cross member No Welding required Gas Charged Color Silver Mounting Bracket Suspension Adjustment 0.0-2.0 Lowered MFG.

These shocks also utilize a fully threaded body that allows you to adjust your ride height for the perfect stance or finely tune weight balance superior handling. Used in drag racing, street performance, autocross, road racing and rod applications. Part # MS401-10450C Notes Coilover shocks are single adjustable Mustang MS401. Lightweight Billet Aluminum Coil-Over Shocks.

part #: ms40110450c prices

• $903.94-$963.31

specifications coilspringi:

• for models: Mustang
• brand: Qa1
• mpn: Ms401-10450c
• placement on vehicle: Front
• type: Coilovers
• item width: 14.200
• color: Silver
• item length: 29.20
• material: Aluminum
• california prop 65 warning: True
• upc: 806990158505

shipping coilspringi:

• service: UPS Ground
• type: Fixed
• cost: $0.00
• transit: 4-10 Days
• class: Standard
• carrier: UPS

payments coilspringi:

• credit card: Discover
• other
• wallet: Paypal

offer coilspringi:

• quantity: 6
• started: March 18, 2026
• sold: 0
• availability: In Stock
• options: Ship-to-home

returns coilspringi:

• time: 30 Days
• paid by: Seller
• policy: Returns Accepted

general coilspringi:

• Car Truck Parts Accessories > Steering Suspension > Leaf Coil Springs
• condition: New

seller coilspringi:

• city: Lakeville, Minnesota
• rating: 99.7%
• # reviews: 354943

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