QA1 10CS400 Coil Spring 10IN 400LBS 2-1/2

( Brand: Qa1 ), ( Manufacturer Part Number: 10CS400 ), ( Fitment Type: Performance/custom ), ( Color: Chrome ), ( Item Diameter: 2.5 In Id ), ( Items Included: Pair Of Springs ), ( Material: High-tensile Chrome Silicone Alloy Wire ), ( Item Length: 10 In ), ( Placement On Vehicle: Front, Left, Rear, Right ), ( Type: Coil Spring ), ( Load Capacity: 400 Lb ), ( Manufacturer Warranty: Yes ), ( Features: 100 Accuracy Of Fit, Easy To Replace, No Drilling Required ), ( Country/region Of Manufacture: United States )

Review QA1 Chrome Coil Spring 10in 400lbs 2-1/2 Inch Id Pair

Introducing the QA1 10CS400 coil spring, a high-performance suspension component engineered to deliver superior handling and ride quality for your vehicle. This specifically designed coil spring measures 10 inches long and is rated for a load capacity of 400 pounds. It is suitable for 2-1/2 inch applications.

The QA1 10CS400 coil spring is manufactured using premium quality materials and advanced manufacturing processes to ensure consistent strength, durability, and reliability. Each spring is precision wound, heat-treated, and shot-peened to enhance its load capacity and resistance to fatigue.

This performance coil spring offers several advantages over stock springs. Its increased load capacity allows for heavier vehicle modifications, such as larger engines, heavy-duty suspension components, or additional weight from aftermarket accessories. The 10CS400 spring also provides improved ride height, allowing for better ground clearance and improved off-road capabilities.

Furthermore, the QA1 10CS400 coil spring is designed to provide excellent handling and stability. Its progressive rate design allows for a smooth and controlled ride, while also providing increased support during hard cornering or heavy acceleration. This results in improved vehicle response, reduced body roll, and enhanced overall driving experience.

In summary, the QA1 10CS400 coil spring is a superior upgrade for your suspension system. Its 10-inch length, 400-pound load capacity, and 2-1/2 inch application make it a versatile choice for various vehicle modifications. Its premium construction, progressive rate design, and improved handling and stability make it an essential upgrade for those seeking enhanced performance and improved driving dynamics.

Pros and Cons of Buying a QA1 10CS400 Coil Spring (10in, 400lbs, 2-1/2)

The QA1 10CS400 coil spring is a heavy-duty suspension component designed for high-performance applications. This spring offers several advantages, but like any product, it also has some potential drawbacks. In this analysis, we will discuss both the pros and cons of purchasing this particular coil spring.

1. High Load Capacity: With a 400lbs load rating, this coil spring can handle significant weight and force, making it an excellent choice for heavy-duty applications.

2. Improved Handling: By replacing the stock springs with a performance-oriented option like the QA1 10CS400, you can expect improved handling and better control over your vehicle.

3. Customizable: QA1 offers various spring rates and lengths to cater to different applications, ensuring that you can find the perfect fit for your vehicle.

4. Durability: QA1 is a reputable brand known for producing high-quality, durable suspension components. This coil spring is no exception, and it is designed to withstand the rigors of high-performance driving.

1. Cost: Compared to stock springs, aftermarket performance springs like the QA1 10CS400 can be quite expensive. This may be a significant consideration for those on a tight budget.

2. Installation Complexity: The installation process for aftermarket coil springs can be more complex than that of stock springs. It may require specialized tools and expertise, which could add to the overall cost and time investment.

3. Potential For Noise: Depending on the application and driving style, the QA1 10CS400 coil spring may generate more noise than stock springs. This could be a concern for those looking for a quieter ride.

The QA1 10CS400 coil spring offers several advantages, including improved handling, high load capacity, and durability. However, it also comes with some potential drawbacks, such as cost, installation complexity, and the potential for increased noise. Ultimately, the decision to purchase this coil spring depends on your specific requirements, budget, and driving preferences. If you prioritize high performance and the ability to handle heavy loads, the QA1 10CS400 coil spring may be an excellent investment. Alternatively, if you are on a tight budget or prefer a quieter ride, you may want to consider alternative options.

To help you make an informed decision, it's essential to weigh the pros and cons carefully and consider your unique requirements and circumstances. If you decide that the benefits of the QA1 10CS400 coil spring outweigh the drawbacks, it may be a worthwhile investment for your high-performance application. However, if you have concerns about the cost, installation complexity, or noise level, you may want to explore alternative options or consult a suspension expert for advice.

Details:

Made in the USA: Quality you can trust. While progressive rate springs may offer a softer initial compression, they can introduce unpredictability as stiffen during compression. Upper Grind Flat. Chrome Powder coated Finish: Looks great and resists corrosion.

This means the spring rate stays same throughout entire stroke, giving drivers confidence they need in various driving conditions. LINEAR SPRING RATE: At QA1, we prioritize consistency and predictability in our suspension systems, which is why high travel springs feature a linear rate design. MADE IN THE USA: QA1 high travel springs are proudly made in the USA. These springs offer a balanced combination of maximum travel, consistent performance, and long-term durability, whether you're on the track or driving street.

Lifetime Warranty: Peace of mind for the long haul. Lightweight Construction: Reduces unstrung weight for better handling. Versatile Application: Perfect for racing, off-road high-performance street driving. QA1s 2.5 Diameter .D. High Travel Coil Springs are designed for those who demand reliable performance from their suspension.

HIGH-TRAVEL DESIGN: What is a high travel spring. Clover hardware. They're tough enough to handle the demands of racing while still being a great fit for street use.: High Travel Design: More suspension travel.

By designing the coil with a smaller diameter high-tensile, chrome silicon alloy wire and fewer coils, these springs compress further before reaching solid state. A high travel spring is engineered to maximize the suspensions movement range without compromising durability or performance. This allows you to take full advantage of your available suspension travel, without the risk bottoming out. QA1 Coil over spring set includes 2 springs, 2.5 ID 10 Tall 400 lb rate per inch Over Spring Chrome Powder Coated Finish Fits Viking,UPR, rear coil overs.

Tapered / Straight Barrel Straight.

part #: 10cs400 prices

• $89.95-$209.99

specifications coilspringi:

• brand: Qa1
• mpn: 10cs400
• fitment type: Performance/custom
• color: Chrome
• item diameter: 2.5 In Id
• items included: Pair Of Springs
• material: High-tensile Chrome Silicone Alloy Wire
• item length: 10 In
• placement on vehicle: Front, Left, Rear, Right
• type: Coil Spring
• load capacity: 400 Lb
• manufacturer warranty: Yes
• features: 100 Accuracy Of Fit, Easy To Replace, No Drilling Required
• country/region of manufacture: United States

shipping coilspringi:

• transit: 3-7 Days
• type: Fixed
• class: Expedited
• service: Expedited
• cost: $0.00

general coilspringi:

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

returns coilspringi:

• policy: No Returns

offer coilspringi:

• sold: 0
• started: May 28, 2025
• best offers: True
• options: Ship-to-home
• availability: In Stock
• quantity: 1

payments coilspringi:

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

seller coilspringi:

• rating: 99.4%
• city: Saint Petersburg, Florida
• # reviews: 5212

Qa1 10CS400 Is Similar To:

• 10ht125 Qa1 125 Lb-in Spring (31.5% similar) length ID10. QA1 125 lb in spring rate 10. Silver powder coat. length 125 lb in spring rate silver powder coat sold each product specifications MANUFACTURERQA1 part NUMBER10HT125 type coil item condition brand new WEIGHT2. 5 id coil-over spring P/N 10HT125 coil SPRINGCOIL-OVER2. Combining a ...(November 11th, 2017)
• 10ht250 Qa1 Coil Springs High (40% similar) QA1 high travel coil springs - part 10HT250 10 inch 250 lbs rate these were put on car to mock up then back in box never used the street you are buying one pair as seen pictures free shipping is lower 48 states only extra all others not hi...(December 13th, 2017)
• 10ht650 Qa1 Coil Over Shock Absorber (30.9% similar) Manufactured using the highest quality materials for high strength, consistency and long life springs go through intensive manufacturing processes to ensure consistency, accuracy durability springs are ground at both ends straight, consistent accurate operation springs clearly marked with free ...(March 3rd, 2017)
• 10htsp450 Qa1 450 Lb-in Spring (33% similar) Single pigtail. 500 in ID10. Priced each. Our product offering includes every conceivable trailer, tire, towing device, truck accessory, suspension, exhaust, lighting, and performance part. Combining a inventory and showrooms full of parts provides us the advantage shipping products quickly ...(April 30th, 2017)
• 12ht-110 Qa1 Pair Of High (18.6% similar) 50MMCOILOVER spring length in: 12. Pair of QA1 high travel coil-over springs in very good condition - they were put on car for mock up, then taken off to switch different. sell cylinder heads parts, pistons, rings, rods valve covers, rocker arms oil pumps, and crankshafts parts. Clover spring ...(December 5th, 2017)
• 12ht095 Qa1 95 Lb-in Spring (29.5% similar) Priced each. QA1 95 lb in spring rate 12. Combining a inventory and showrooms full of parts provides us the advantage shipping products quickly efficiently. 95 lb in spring rate. In length coil-over. 500 in ID12. Silver powder coat. Coil spring. Our product offering includes every conceivable ...(April 30th, 2017)
• 12ht325 Qa1 325 Lb-in Spring (29.2% similar) 5 id coil-over spring P/N 12HT325 thumbnails to QA1 325 lb in rate 12. In length priced each. Please through the messaging system by ing button above. Our product offering includes every conceivable trailer, tire, towing device, truck accessory, suspension, exhaust, lighting, and performance part...(April 23rd, 2017)
• 12ht450 Qa1 450 Lb-in Spring (33.7% similar) 5 in id coil-over spring P/N 12HT450. QA1 450 lb in spring rate 12. Combining a inventory and showrooms full of parts provides us the advantage shipping products quickly efficiently. length 450 lb in spring rate silver powder coat sold each product specifications MANUFACTURERQA1 part NUMBER12HT450 ...(December 27th, 2017)
• 14ht095 Qa1 95 Lb-in Spring 191215105656 (33.7% similar) QA1 95 lb in spring rate 14. Coil spring. Our product offering includes every conceivable trailer, tire, towing device, truck accessory, suspension, exhaust, lighting, and performance part. Please through the messaging system by ing button above. 500 in id coil-over spring P/N 14HT095. Priced each...(December 27th, 2017)
• 15htfb275 Qa1 Spring Cr-si High 00806990127396 (28% similar) Listing data is catalog provider. lengths and rates marked all QA1 springs are clearly with the free length of spring rate for quick easy identification. 24X7 online. Long 80: spring, Cr-si high travel id 15 x 275 lb in. Made in the USA QA1S high travel springs are proudly. Made with chrome ...(May 5th, 2017)
• 7ht300 Qa1 300 Lb-in Spring 191215105670 (37.6% similar) Search by vehicle make. In length id coil-over spring P/N 7HT300. Priced each. Our product offering includes every conceivable trailer, tire, towing device, truck accessory, suspension, exhaust, lighting, and performance part. Daily deal QA1 300 lb in spring rate please through the messaging ...(April 23rd, 2017)