Found It Cheaper? Use Our Atlus Price Guarantee!

QA1 Pro Rear Weld-In Double Adjustable Coil-Over System - 12in x 150lbs/in - 3in Tube - DD501-12150

$1,021.95 $1,132.15
-10%
Low in stock

This product will be available soon, but you can pre-order now to get on the list before others!

US Based Support - In Florida

30 Days Satisfaction Guarantee

Price Match

Easy Financing

QA1 Pro Rear Weld-In Double Adjustable Coil-Over System - 12in x 150lbs/in - 3in Tube - DD501-12150
$1,021.95 $1,132.15
$1,021.95 $1,132.15

The QA1 Pro Rear Weld-In Coil-Over System (DD501-12150) is a professional-grade suspension solution designed for drag racing, street performance, and custom street rod applications. This kit features independent compression and rebound adjustment, allowing you to fine-tune your vehicle's weight transfer and ride quality with precision-defined valving curves that ensure consistent performance between every click.

  • Independent Valving: Double adjustable (DD) design for separate control over compression and rebound settings.
  • Premium Construction: Lightweight aluminum shock bodies with a 5/8" centerless ground, hard chrome-plated solid piston rod.
  • Durability: Features a precision-machined aluminum piston with a PTFE piston band and a three-step sealing system to prevent leaks.
  • Serviceability: 100% dyno tested and serialized; fully revalveable and rebuildable by QA1 factory or authorized centers.
  • Fitment: Designed to weld onto 3" diameter axle tubes; includes ride-height adjustable hardware.
  • Specs: 12" shock length with 150 lbs/in linear rate springs.

Kit Includes: (2) DD Series Proma Star or Aluma Matic shocks, (2) linear or variable rate springs, and all necessary mounting hardware. Made in the USA.

Authencity Guaranteed

We only sell authentic products from verified brand partners and retail partners globally.

  • Visa
  • Mastercard
  • PayPal
  • American Express
  • Discover
  • Apple Pay
  • Google Pay

Can’t Find the Part You Need?

Our catalog represents only a portion of the automotive products available through our supplier network. If you cannot find a specific part, brand, or application on our website, submit a request below, and our team will help source it for you.

Please include as much information as possible, such as your vehicle's year, make, model, trim, engine, desired brand, or part number, to help us quickly identify the correct product.

Email is invalid

Image alt