Description

Coil Spring – Pro-Coil – Coil-Over – 4.125 in ID – 11 in Length – 300 lb/in Spring Rate – Steel – Silver Powder Coat – Each

Why Choose Us?



Frequently Asked Questionsโ€‹

As an Authorized Automotive Retailer in the United States, we take pride in guaranteeing 100% authentic products from all brands available on our website. With partnerships spanning 1,000+ brands and a network of 20+ distributor warehouses nationwide, we maintain millions of auto parts in inventory across the USA, ensuring quick shipping and reliable service to our customers. When you shop with us, you're investing in quality and trust.
We believe we have the fastest backorder system in the U.S. auto parts industry, thanks to our strong partnerships with brands and vendors.Nearly all backordered auto parts are shipped directly by the vendors without any additional delays, or they are placed as special orders on the same day. In most cases, backordered parts are delivered within 5-10 days.
We offer unbeatable prices and the best shipping rates on auto parts, with exclusive protection and insurance included to safeguard your order from damage or loss. Enjoy convenient door-to-door delivery, real-time tracking, and our 100% satisfaction guarantee for a smooth, worry-free experience.
Our standard shipping typically takes 1-3 business days. We will provide estimated shipping time for each product. While we aim to deliver as quickly as possible, this timeframe ensures all orders are processed, prepared, and dispatched with care. If the products are not ready for shipping in 72 hours, we will refund you 100%
Absolutely. Once your order is dispatched, youโ€™ll receive an email with tracking details, so you can follow your shipment every step of the way. Every step of shipping process will be sent through email notifications or using tracking page.
Every product page includes a stock level indicator to show whatโ€™s available. We always update the inventory 24/24. Weโ€™ll be happy to check availability and provide updates on new stock arrivals if you need a help.
Weโ€™re sorry to hear that your order wasnโ€™t delivered in perfect condition. Please email us with your order number, a description of the issue, and photographs of the damaged item. Once we receive this information, weโ€™ll arrange for a replacement or refund and handle the return process.
You can return items within 30 days of receipt. Ensure the product is new in its original packaging and securely wrapped for safe transit. Once we receive the item in sellable condition, weโ€™ll issue a full refund for the product value. Contact us for the return address and further instructions.

About QA1

QA1 specializes in high-performance suspension components, including shock absorbers, rod ends, spherical bearings, struts, springs, ball joints and other related items. With products to fit a wide variety of applications, they have solutions for the circle track, drag racing, street performance, and street rodding markets.

International Shipping

Below are estimated rates and delivery times for popular destinations; full carrier options are available at checkout.

Our dedicated team has years of experience managing international logistics and customs documentation to ensure smooth delivery from our US warehouse to your door. Please review our shipping policy and local import regulations before ordering.

Loading international estimates...

Reviews

There are no reviews yet.

Be the first to review “QA1 C/O Spring – 4.125 ID x 11 300# Silver 11HTBF300”

Your email address will not be published. Required fields are marked *

Recently viewed products

  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    K AND N ENGINEERING Replacement Air Filter SU-6596

    SKU: KNESU-6596
    Product information
    Details...
    Original price was: $74.00.Current price is: $67.19.Add to cart
    Original price was: $74.00.Current price is: $67.19.
    Quantity Only 1 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    PIONEER Pipe Plug – 1/2 (100) PP-568-100

    SKU: PIOPP-568-100
    Product information
    • Weight4.495 lbs
    • Dimensions4.2 × 4.15 × 4.1 in
    • Head Style

      Allen

    • Thread

      1/2 in NPT

    • Material

      Steel

    • Color

      Natural

    • Finish

      Natural

    Details...
    Original price was: $33.91.Current price is: $30.83.Add to cart
    Original price was: $33.91.Current price is: $30.83.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    RAM CLUTCH SBF Steel Flywheel 28oz. Ext. Balance 1505

    SKU: RAM1505
    Product information
    • Weight34 lbs
    • Dimensions14.6 × 14.5 × 1.5 in
    • Quantity

      Each

    • Material

      Steel

    • Color

      Natural

    • Finish

      Natural

    • Ring Gear Included

      Yes

    Details...
    Original price was: $394.80.Current price is: $329.00.Add to cart
    Original price was: $394.80.Current price is: $329.00.
    Quantity Only 1 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    LONGACRE Case Silver 9.5 x 7 x 1.75 52-50518

    SKU: LON52-50518
    Product information
    • Weight1.83 lbs
    • Dimensions12.2 × 9.4 × 3.7 in
    • Material

      Plastic

    • Color

      Silver

    • Finish

      Natural

    • Quantity

      Each

    • Intended Purpose

      Universal

    Details...
    Original price was: $27.57.Current price is: $25.06.Add to cart
    Original price was: $27.57.Current price is: $25.06.
    Quantity Only 8 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    LONGACRE Temp Gauge Fitting 52-46150

    SKU: LON52-46150
    Product information
    • Weight0.09 lbs
    • Dimensions5.55 × 4.15 × 0.9 in
    • Quantity

      Each

    • Material

      Brass

    • Color

      Natural

    • Finish

      Natural

    • Fitting Thread Size End 1

      1/2 in NPT

    Details...
    Original price was: $12.75.Current price is: $11.59.Add to cart
    Original price was: $12.75.Current price is: $11.59.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    SPARCO Pant Sport Light XXL Black 001042XP2XLNR

    SKU: SCO001042XP2XLNR
    Product information
    • Weight2.51 lbs
    • Dimensions17.4 × 13.9 × 3.8 in
    • Brand

    • Condition

    • Type

    • Manufacturer Part Number

      001042XP2XLNR

    Details...
    Original price was: $386.00.Current price is: $350.00.Add to cart
    Original price was: $386.00.Current price is: $350.00.
    Quantity Only 1 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    VENTSHADE Ventvisor Outside Mount 4Pc. 94335

    SKU: VEN94335
    Product information
    • Weight1.75 lbs
    • Dimensions47 × 11.75 × 2 in
    • Product Line

      Original Ventvisor

    • Application Specific

      Yes

    • Front Mounting Style

      Stick-On

    • Rear Mounting Style

      Stick-On

    • In Channel / Out Of Channel

      Out of Channel

    Details...
    Original price was: $77.00.Current price is: $69.99.Add to cart
    Original price was: $77.00.Current price is: $69.99.
    Quantity Only 4 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    HUSKY LINERS X-act Contour Series Front Floor Liners 55791

    SKU: HSK55791
    Product information
    • Weight7.853 lbs
    • Dimensions34 × 27 × 5.5 in
    • Product Line

      X-ACT Contour

    • Application Specific

      Yes

    • First Row Included

      Yes

    • First Row 1 / 2 Piece

      2 Piece

    • Textured

      Lines

    Details...
    Original price was: $121.00.Current price is: $109.99.Add to cart
    Original price was: $121.00.Current price is: $109.99.
    Quantity Only 1 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    HUSKY LINERS Front Floor Liners 52731

    SKU: HSK52731
    Product information
    • Weight8.05 lbs
    • Dimensions33 × 24 × 3 in
    • Product Line

      X-ACT Contour

    • Application Specific

      Yes

    • Textured

      Diamond Plate / Lines

    • Material

      Plastic

    • Color

      Black

    Details...
    Original price was: $121.00.Current price is: $109.99.Add to cart
    Original price was: $121.00.Current price is: $109.99.Add to wishlist
  • Add to wishlist
    Sale
    EARLS 3/8 > #6 Shut Off Valve 230502ERL
    Add to wishlist

    EARLS 3/8 > #6 Shut Off Valve 230502ERL

    SKU: EAR230502ERL
    Product information
    • Weight0.12 lbs
    • Dimensions3.95 × 1.35 × 1.3 in
    • Mounting Style

      In-Line

    • Material

      Aluminum

    • Color

      Red

    • Finish

      Anodized

    • Quantity

      Each

    Details...
    Original price was: $78.00.Current price is: $70.45.Add to cart
    Original price was: $78.00.Current price is: $70.45.
    Quantity Only 9 left in stock!
    -+
    Add to cart
    Add to wishlist

    0