1. Coil Springs Auto Parts For Sale
  2. sku: 18033570599403772
  3. QA1 11HTSP300

QA1 11HTSP300 Powder Coat Tapered Pro Coil Spring 806990119896 11IN 300LBS/IN

11htsp300 Qa1 11in 300lbs/in Silver Powder Coat Tapered Pro Coil Spring

( Brand: Qa1 ), ( Manufacturer Part Number: 11HTSP300 ), ( Upper Grind: Flat ), ( Type: Coil Spring ), ( Color: Silver ), ( Material: Chrome ), ( Features: Tapered ), ( Item Length: 11 In ), ( Upper Iniside Diameter: 2-1/2in. ), ( Lower Inside Diameter: 3.50in. ), ( UPC: 806990119896 )

Review QA1 11in 300lbs/in Silver Powder Coat Tapered Pro Coil Spring

The QA1 11HTSP300 tapered pro coil spring is a high-performance suspension component designed for heavy-duty applications. This 11-inch long coil spring carries a load capacity of 300 pounds per inch, making it an excellent choice for vehicles that require extra support.

The spring is manufactured using a tapered design, which provides a progressive rate throughout the travel range. This design allows for improved vehicle control and more consistent handling, especially during extreme driving conditions.

The spring is coated with a durable powder coat finish. This finish not only enhances the spring's appearance but also provides an additional layer of protection against the elements, ensuring that the spring remains in excellent condition for an extended period.

The QA1 11HTSP300 tapered pro coil spring is engineered to meet the highest standards of quality and performance. It is manufactured using the latest technology and precision machinery to ensure consistent dimensions and superior strength.

This heavy-duty spring is suitable for various applications, including race cars, tow vehicles, and other high-performance applications where extra load support is needed. By installing this spring in your vehicle, you can improve its handling, stability, and overall performance.

In summary, the QA1 11HTSP300 tapered pro coil spring is a high-capacity, tapered design coil spring that provides progressive rate support for heavy-duty applications. Its durable powder coat finish ensures longevity, and its precision manufacturing ensures consistent performance. This spring is an excellent choice for race cars, tow vehicles, and other high-performance applications where improved handling, stability, and load support are essential.

Pros and Cons of Buying QA1 Model 11HTSP300 11-inch, 300lbs/in Tapered Pro Coil Spring

The QA1 Model 11HTSP300 is a high-performance coil spring specifically designed for heavy-duty applications. This spring comes with several advantages and disadvantages that potential buyers should consider before making a purchase.

Pros:

1. Superior Load Capacity: The QA1 Model 11HTSP300 offers an impressive load capacity of 300lbs/in, making it suitable for heavy-duty vehicles or applications where extra support is necessary.

2. Tapered Design: The tapered design of this coil spring provides better clearance for other components in the suspension system, reducing the risk of interference and improving overall performance.

3. Powder Coat Finish: The powder coat finish on the QA1 Model 11HTSP300 not only enhances its appearance but also offers superior protection against rust and corrosion, ensuring longevity.

4. High-Quality Material: Made from high-quality materials, this spring delivers excellent strength and durability, ensuring it can handle the demands of heavy-duty usage.

5. Improved Ride Quality: By providing better support and reducing suspension deflection, the QA1 Model 11HTSP300 can lead to improved ride quality and handling, making your vehicle more enjoyable to drive.

Cons:

1. Higher Cost: Compared to standard coil springs, the QA1 Model 11HTSP300 is more expensive due to its superior load capacity, tapered design, and high-quality materials.

2. Limited Availability: This particular model may not be readily available at local auto parts stores, and buyers may need to order it online or through a specialized performance parts supplier.

3. Installation Complexity: Due to its larger size and tapered design, installing the QA1 Model 11HTSP300 may require some additional effort and expertise compared to standard coil springs.

Conclusion:

The QA1 Model 11HTSP300 11-inch, 300lbs/in tapered pro coil spring offers numerous advantages for those seeking improved performance, durability, and load capacity in their heavy-duty applications. While the higher cost, limited availability, and installation complexity might deter some buyers, the benefits of this high-performance spring often outweigh the drawbacks. Ultimately, the decision to purchase the QA1 Model 11HTSP300 depends on your specific requirements, budget, and expertise. If you're looking for a top-quality, heavy-duty coil spring that can handle the demands of your application, this might be the perfect choice for you.

Recommendation:

If you're considering purchasing the QA1 Model 11HTSP300, ensure you have a clear understanding of your requirements, budget, and installation capabilities before making a decision. Consult with a performance parts specialist or a knowledgeable mechanic to determine if this spring is the right fit for your application. If the benefits align with your needs, the QA1 Model 11HTSP300 could be an excellent investment in your heavy-duty vehicle or project.

Details:

Made in the USA. Fewer coils means lighter springs with increased travel. These high travel springs are designed for immediate response, increased stability, and enhanced cornering abilities. Lifetime guarantee to remain with 2% of their original free height .

Durable silver powder coat finish. Made from high tensile chrome silicon wire. Only compatible with suggested makes model's which utilize QA1 Pro Coil Systems. FITMENT NOTES: Pro Coil Springs are not a direct OE replacement.

part #: 11htsp300 prices

  • $104.95-$117.59

specifications coilspringi:

  • brand: Qa1
  • mpn: 11htsp300
  • upper grind: Flat
  • type: Coil Spring
  • color: Silver
  • material: Chrome
  • features: Tapered
  • item length: 11 In
  • upper iniside diameter: 2-1/2in.
  • lower inside diameter: 3.50in.
  • upc: 806990119896

payments coilspringi:

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

seller coilspringi:

  • city: Lawton, Iowa
  • # reviews: 2122
  • rating: 98.2%

offer coilspringi:

  • availability: In Stock
  • quantity: 1
  • options: Ship-to-home
  • sold: 0
  • started: August 3, 2025

shipping coilspringi:

  • type: Calculated
  • carrier: USPS
  • transit: 14-21 Days
  • class: Standard
  • service: USPS Ground Advantage
  • cost: $49.45

returns coilspringi:

  • policy: No Returns

general coilspringi:

  • condition: New
  • Car Truck Parts Accessories > Steering Suspension > Leaf Coil Springs
upper grind: flat, type: coil spring, features: tapered, item length: 11 in, upper iniside diameter: 2-1/2in., lower inside diameter: 3.50in.,
category: auto parts > car truck parts accessories > steering suspension > leaf coil springs, color: silver, material: chrome, sku: 18033570599403772,
Qa1 11HTSP300 Is Similar To:
  • (30.3% 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)
  • (30% 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)
  • (18.7% 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)
  • (33.7% 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)
  • (28.6% 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)
  • (30.3% 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)
  • (30.3% 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)
  • (25.2% 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)
  • (17.1% 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)
  • (37.8% 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)
  • (23.7% similar) They were only used for mock-up, and I went in a different direction. My loss is your gain. Be sure and check my other offers for automotive parts, Harley parts great vintage items. QA1 8 chrome springs here is a pair of inch coil over that are new, never run...(April 3rd, 2017)
coilspringi logo
5 offers $104.95–$117.59 USD
  • New. Offer #1 priced at $104.95 + $0.00 shipping estimate = $104.95* total. These lighter springs reduce unsprung weight and react faster, optimizing suspension performance. As a result, these springs are lighter and have increased travel due to the larger distance between the coils.FREE SHIPPING
  • New. Offer #2 priced at $117.59 + $15.99 shipping estimate = $133.58* total. high travel springs are manufactured from specially designed high-tensile, chrome silicon alloy spring wire, which allows them to have fewer coils and a smaller wire diameter Available in 7", 9", 10", 12", 14" and 16" lengths, QA1 offers an assortment of high travel springs with a silver powder coated finish.+$15.99 shipping
  • New. Offer #3 priced at $104.95 + $0.00 shipping estimate = $104.95* total. FREE SHIPPING
  • New other (see details). Offer #4 priced at $130.00 + $0.00 shipping estimate = $130.00* total. $130 New QA1 Coil Springs.FREE SHIPPING
  • New. Offer #5 priced at $117.94 + $0.00 shipping estimate = $117.94* total. QA1 Precision Products SPRING, CR-SI HT HIGH TRAVEL 3.570", 11" X 300 LBS/IN TAPER PIGTAIL SILVER PC.FREE SHIPPING

Copyright © coilspringi.com