QA1 9HT550 Coil Spring 806990112644 2.5IN

( Brand: Qa1 ), ( Manufacturer Part Number: 9HT550 ), ( Part Type: Spring Coil ), ( Air Restricted: No ), ( UPC: 806990112644 )

Review QA1 Coil Spring 2.5in 550# fits 550

The QA1 9HT550 coil spring is a high-performance suspension component designed for 2.5-inch applications. This coil spring is part of QA1's Heavy-Duty series, which is known for its superior strength and durability.

The spring rate for this 9HT550 coil spring is 550 pounds per inch. This makes it an excellent choice for vehicles that require a stiffer suspension setup, such as off-road trucks or high-performance race cars. The increased spring rate helps to reduce body roll and improve handling, giving the vehicle a more responsive and agile feel.

This coil spring is manufactured using high-quality chrome silicon steel wire. The wire is heat-treated to ensure maximum strength and consistency. The spring's helix design is carefully calculated to provide optimal load distribution and ride quality. The spring's ends are also precision-machined and shot-peened to ensure a perfect fit and long-lasting performance.

One of the standout features of the QA1 9HT550 coil spring is its ability to handle heavy loads. This spring is rated for a maximum load capacity of 10,625 pounds, making it an ideal choice for heavy-duty applications where maximum strength is a must.

This coil spring is also designed to provide excellent ride quality. Despite its stiff spring rate, the 9HT550 spring offers a smooth and comfortable ride, even on rough terrain. This is due in part to QA1's proprietary progressive rate design, which provides a more gradual increase in spring force as the vehicle compresses the spring.

Installation of the QA1 9HT550 coil spring is straightforward and can be done using standard tools. The spring comes with a dust boot to help protect against dirt and debris, and it is also available with optional twin-tube shocks for a complete suspension upgrade.

In summary, the QA1 9HT550 coil spring is a high-performance suspension component designed for 2.5-inch applications that require a stiff spring rate and maximum strength. This coil spring is manufactured using high-quality chrome silicon steel wire and is rated for a maximum load capacity of 10,625 pounds. Despite its stiff spring rate, it offers a smooth and comfortable ride, making it an excellent choice for off-road trucks, heavy-duty vehicles, and high-performance race cars.

Pros and Cons of Buying QA1 Model Number QA1-9HT550 Coil Spring 2.5in (550)

a. High-Performance: QA1 coil springs are renowned for their high-performance capabilities. These springs offer excellent ride quality, handling, and stability, making them an excellent choice for performance applications.

b. Durability: QA1 coil springs are manufactured using premium materials and advanced manufacturing techniques, ensuring they can withstand the rigors of high-performance driving and racing.

c. Customizability: QA1 offers a wide range of spring rates and configurations to cater to various vehicle applications. This allows you to choose the perfect springs for your specific vehicle and driving style.

d. Technical Support: QA1 provides excellent technical support, ensuring you can make the most of your new coil springs. Their knowledgeable staff can help answer any questions you may have and provide guidance on installation.

a. Cost: QA1 coil springs are more expensive than OEM (Original Equipment Manufacturer) springs. This may be a deterrent for some buyers who are on a budget.

b. Complexity: Installing aftermarket coil springs can be a complex process, especially for those without mechanical experience. This may require the assistance of a professional mechanic or suspension specialist.

The QA1 Model Number QA1-9HT550 Coil Spring 2.5in (550) offers several advantages for performance-minded drivers, including high-performance capabilities, durability, customizability, and excellent technical support. However, these advantages come with a higher cost and the complexity of installation.

If you are looking for a high-performance coil spring for your vehicle and are willing to invest in the additional cost and installation complexity, then the QA1-9HT550 Coil Spring 2.5in (550) is an excellent choice. On the other hand, if you are on a budget or are not comfortable with the installation process, then you may want to consider alternative options.

If you have decided that the QA1-9HT550 Coil Spring 2.5in (550) is the right choice for you, then we would recommend purchasing them from a reputable automotive parts supplier or directly from QA1's website. This will ensure you receive a genuine product and can take advantage of any available warranties or guarantees.

Additionally, we would recommend consulting with a professional mechanic or suspension specialist to ensure a proper installation process. This will help maximize the performance benefits of your new coil springs and ensure their longevity.

Details:

Coil Fits Spring 2.5in ID X 9in Black. Engine Dress-Up. Cannot be shipped by ground; air. Coil Spring - High Travel Coil-Over 2.5 in ID 9 length 550 lb/in Rate Steel Silver Powder Coat Each.

Typical items are shipped in an appropriate box via UPS. Vehicle Care. Smaller items may be shipped in an appropriate envelope using either USPS, UPS or FedEx. Our Favourite Brands.

Cold Air Intakes. Coil Fits Spring - 2.5in X 9 550#.

part #: 9ht550 prices

• $81.75-$110.00

specifications coilspringi:

• brand: Qa1
• mpn: 9ht550
• part type: Spring Coil
• air restricted: No
• upc: 806990112644

seller coilspringi:

• city: Frisco
• # reviews: 1057
• rating: 97.8%

payments coilspringi:

• credit card: Visa
• other
• wallet: Google-pay

shipping coilspringi:

• service: UPS Ground
• carrier: UPS
• transit: 3-6 Days
• cost: $0.00
• type: Fixed
• class: Standard

general coilspringi:

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

offer coilspringi:

• sold: 0
• quantity: 3
• availability: In Stock
• options: Ship-to-home
• started: November 15, 2025

returns coilspringi:

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

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