Description

Shock – Proma Star – Twintube – 11.125 in Compressed / 15.00 in Extended – 2.00 in OD – Single Adjustable – Threaded Aluminum – Natural – Each

Why Choose Us?



Frequently Asked Questions​

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, you’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 what’s available. We always update the inventory 24/24. We’ll be happy to check availability and provide updates on new stock arrivals if you need a help.
We’re sorry to hear that your order wasn’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, we’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, we’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 Proma-Star C/O Shock – Adjustable DS403”

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

    PROFORM Pipe Plug Removal Tool 1/4in 67447

    SKU: PFM67447
    Product information
    • Weight0.3 lbs
    • Dimensions7.05 × 4.6 × 1 in
    • Material

      Steel

    • Color

      Cadmium

    • Finish

      Plated

    • Quantity

      Each

    • Intended Application

      Pipe Plug

    Details...
    Original price was: $32.04.Current price is: $29.13.Add to cart
    Original price was: $32.04.Current price is: $29.13.
    Quantity Only 2 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    PRO SHOCK Rubber Eyering Assembly S500

    SKU: PROS500
    Product information
    • Weight0.35 lbs
    • Dimensions1.5 × 1.5 × 1.5 in
    • Material

      Steel

    • Color

      Cadmium

    • Finish

      Plated

    • Quantity

      Each

    • Shock Side Mount Style

      Bushed Eyelet

    Details...
    Original price was: $22.67.Current price is: $18.89.Add to cart
    Original price was: $22.67.Current price is: $18.89.
    Quantity Only 3 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    NITROUS EXPRESS H.D. Fully Automatic Bottle Heater 15940

    SKU: NXS15940
    Product information
    • Weight1.5 lbs
    • Dimensions7.9 × 5.3 × 3.3 in
    • Product Line

      Heavy Duty

    • Quantity

      Kit

    • Fittings Included

      Yes

    • Fitting 1 Side A Style

      Male

    • Fitting 1 Side B Style

      Female

    Details...
    Original price was: $369.54.Current price is: $321.34.Add to cart
    Original price was: $369.54.Current price is: $321.34.
    Quantity Only 4 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    QA1 Spanner Wrench T114W

    SKU: QA1T114W
    Product information
    • Weight1.23 lbs
    • Dimensions12.3 × 5 × 0.55 in
    • Material

      Steel

    • Color

      Zinc

    • Finish

      Plated

    • Quantity

      Kit

    • Style

      Nut Wrench

    Details...
    Original price was: $30.75.Current price is: $27.95.Add to cart
    Original price was: $30.75.Current price is: $27.95.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    MR. GASKET Choke Cable 2078

    SKU: MRG2078
    Product information
    • Weight0.5 lbs
    • Dimensions9.85 × 7.3 × 1.55 in
    • Color

      Zinc

    • Quantity

      Each

    • Material

      Steel

    • Finish

      Plated

    • Length

      6 ft

    Details...
    Original price was: $40.00.Current price is: $35.59.Add to cart
    Original price was: $40.00.Current price is: $35.59.
    Quantity Only 7 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    MOOG Tie Rod ES427R

    SKU: MOGES427R
    Product information
    • Weight1.65 lbs
    • Dimensions9.9 × 3.7 × 2.7 in
    • Oem Replacement

      Yes

    • Length

      8.818 in

    • Material

      Steel

    • Color

      Black

    • Finish

      Oxide

    Details...
    Original price was: $26.75.Current price is: $24.32.Add to cart
    Original price was: $26.75.Current price is: $24.32.
    Quantity Only 4 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    MANLEY BBC Timing Kit 73182

    SKU: MAN73182
    Product information
    • Weight3.89 lbs
    • Dimensions9.75 × 6.65 × 1.5 in
    • Quantity

      Kit

    • Chain Included

      Yes

    • Chain A Style

      Roller

    • Chain A Rows

      Double

    • Crankshaft Gear Included

      Yes

    Details...
    Original price was: $146.00.Current price is: $132.28.Add to cart
    Original price was: $146.00.Current price is: $132.28.
    Quantity Only 4 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    TRANS-DAPT Bb Chevy V.C. Tabs (7) 9640

    SKU: TRA9640
    Product information
    • Weight0.545 lbs
    • Dimensions7.35 × 2.85 × 1.05 in
    • Material

      Steel

    • Color

      Chrome

    • Finish

      Plated

    • Quantity

      Set of 7

    • Tab 1 Shape

      Rectangle

    Details...
    Original price was: $18.05.Current price is: $16.41.Add to cart
    Original price was: $18.05.Current price is: $16.41.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    U-B MACHINE Rubber Trailing Arm End RH Thread 46-2320

    SKU: UBM46-2320
    Product information
    • Weight1.72 lbs
    • Dimensions6.45 × 4.45 × 2.85 in
    • Quantity

      Each

    • Variant

      Yes

    • Driver / Passenger Side

      Passenger

    • Outside Diameter

      2.27 in

    • Hole Diameter

      0.5781 in

    Details...
    Original price was: $36.55.Current price is: $33.23.Add to cart
    Original price was: $36.55.Current price is: $33.23.
    Quantity Only 2 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    UMI PERFORMANCE Motor Mounts 2328

    SKU: UMI2328
    Product information
    • Weight3.5 lbs
    • Dimensions12.2 × 4.6 × 4.4 in
    • Quantity

      Pair

    • Application Specific

      Yes

    • Hardware Included

      Yes

    • Solid Mount

      Yes

    • Engine Side Included

      Yes

    Details...
    Original price was: $119.99.Current price is: $99.99.Add to cart
    Original price was: $119.99.Current price is: $99.99.Add to wishlist

    60