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 Chevy Distributor Black Cap 141-686

    SKU: PFM141-686
    Product information
    • Weight6.55 lbs
    • Dimensions17 × 8 × 7 in
    • Quantity

      Each

    • Variant

      Yes

    • Variant Group

      Distributor109

    • Variant Column

      Cap Color

    • Trigger Style

      Magnetic

    Details...
    Original price was: $225.34.Current price is: $195.95.Add to cart
    Original price was: $225.34.Current price is: $195.95.
    Quantity Only 1 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    MSD IGNITION 6CT Pro C/T Ignition Box 6428

    SKU: MSD6428
    Product information
    • Weight4.07 lbs
    • Dimensions12.2 × 8.3 × 4.6 in
    • Product Line

      6CT Pro

    • Quantity

      Kit

    • Material

      Aluminum

    • Color

      Red

    • Finish

      Powder Coat

    Details...
    Original price was: $620.00.Current price is: $562.95.Add to cart
    Original price was: $620.00.Current price is: $562.95.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    MOROSO Crankcase Evac.System 25900

    SKU: MOR25900
    Product information
    • Weight1.629 lbs
    • Dimensions6 × 5.7 × 4.4 in
    • Quantity

      Kit

    • Check Valve Included

      Yes

    • Check Valve Inlet Size

      1/2 in NPT

    • Check Valve Inlet Style

      Female

    • Check Valve Outlet Size

      5/8 in

    Details...
    Original price was: $119.59.Current price is: $103.99.Add to cart
    Original price was: $119.59.Current price is: $103.99.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    ROLLMASTER-ROMAC Replacement Timing Chain 60-Link Pro-Series 3DR60-2

    SKU: ROL3DR60-2
    Product information
    • Weight1.04 lbs
    • Dimensions5.85 × 3.1 × 1.15 in
    • Quantity

      Each

    • Color

      Natural

    • Finish

      Natural

    • Chain Included

      Yes

    • Chain A Style

      Roller

    Details...
    Original price was: $133.00.Current price is: $120.47.Add to cart
    Original price was: $133.00.Current price is: $120.47.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    HOWE Stud for 22421 +.500 22485

    SKU: HOW22485
    Product information
    • Weight0.74 lbs
    • Dimensions7.85 × 6.4 × 1.5 in
    • Ball Diameter

      1.437 in

    • Taper

      1.6 in/ft

    • Stud Length

      3.66 in

    • Stud Thread

      9/16-18 in

    • Material

      Steel

    Details...
    Original price was: $53.66.Current price is: $48.78.Add to cart
    Original price was: $53.66.Current price is: $48.78.
    Quantity Only 6 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    WHITELINE PERFORMANCE Shock Eye Bushing Universal W33370

    SKU: WHIW33370
    Product information
    • Weight0.085 lbs
    • Dimensions5.4 × 4.6 × 1.45 in
    • Shape

      Hourglass

    • Upper / Lower

      Upper / Lower

    • Front / Rear

      Front, Rear

    • Inside Diameter

      0.625 in

    • Outside Diameter

      1.050 in

    Details...
    Original price was: $9.46.Current price is: $7.88.Add to cart
    Original price was: $9.46.Current price is: $7.88.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    GRANT Gt Horn Button 5899

    SKU: GRT5899
    Product information
    • Weight0.17 lbs
    • Dimensions4.15 × 4.1 × 2.3 in
    • Style

      Cap

    • Logo

      Plain

    • Logo Color

      Natural

    • Intended Steering Wheel

      Signature Series

    • Material

      Plastic

    Details...
    Original price was: $16.56.Current price is: $15.05.Add to cart
    Original price was: $16.56.Current price is: $15.05.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    GOODYEAR 22/2.5-17 Front Runner 1445

    SKU: GDYD1445
    Product information
    • Weight3.95 lbs
    • Dimensions22 × 22 × 2.75 in
    • Product Line

      Eagle Dragway Special Front Runner

    • Color

      Black

    • Quantity

      Each

    • Tire Size

      22.0X2.5-17

    • Intended Purpose

      Drag

    Details...
    Original price was: $296.14.Current price is: $269.22.Add to cart
    Original price was: $296.14.Current price is: $269.22.
    Quantity Only 1 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    FLOWMASTER 99-04 Ford Lightning American Thunder System 17367
    Add to wishlist

    FLOWMASTER 99-04 Ford Lightning American Thunder System 17367

    SKU: FLO17367
    Product information
    • Weight41.23 lbs
    • Dimensions33.1 × 20 × 16 in
    • Product Line

      American Thunder

    • Style

      Cat Back

    • Exit Quantity

      Dual

    • Exit Location

      Back

    • Exit Side

      Passenger

    Details...
    Original price was: $789.00.Current price is: $716.95.Add to cart
    Original price was: $789.00.Current price is: $716.95.
    Quantity Only 4 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    EQUUS Gauge Mount Panel 2 in Black Triple E9923
    Add to wishlist

    EQUUS Gauge Mount Panel 2 in Black Triple E9923

    SKU: EQUE9923
    Product information
    • Weight0.235 lbs
    • Dimensions7.8 × 4.7 × 0.85 in
    • Quantity

      Each

    • Variant

      Yes

    • Variant Group

      Gauge Mounting Brackets3

    • Variant Column

      Number Of Gauges

    • Mounting Location

      Dash Mount

    Details...
    Original price was: $17.09.Current price is: $15.54.Add to cart
    Original price was: $17.09.Current price is: $15.54.
    Quantity Only 6 left in stock!
    -+
    Add to cart
    Add to wishlist

    50