My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

QA1 DD501-12130V Pro Rear Weld-In Coilover Kit Double Adjustable Shock 130/250 lb/in Variable Rate Spring

Manufacturer

Picture for manufacturer QA1 Precision Products

Part Number

DD501-12130V
13 reviews
Sale Price

$1,060.95

Estimated ship date Monday, November 23

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The QA1 DD501-12130V is a Pro-Rear Weld-In Coilover Kit featuring double adjustable Proma Star shocks and 130/250 lb/in variable rate springs, designed for 3.00-inch diameter axle tubes. Purpose-built for drag racing, street performance, and street rod builds, this complete two-shock kit delivers race-grade suspension tuning capability in a weld-in format.

The Independent Compression and Rebound Double Adjustable (DD) valving allows each damping circuit to be tuned separately, giving the driver precise control over both compression and rebound. With evenly spaced valving changes throughout the adjustment range, transitions between clicks are smooth and predictable with no abrupt jumps in feel.

Key Features:

  • Double adjustable (DD) independent compression and rebound valving — Proma Star DD501 shocks
  • Variable rate springs — 130/250 lb/in rate, 12-inch length (part no. 12HT130/250)
  • Designed for 3.00-inch diameter axle tubes
  • Lightweight aluminum coil-over shock bodies
  • Ride height adjustable spring perch design
  • 5/8-inch centerless ground, hard chrome plated solid piston rod
  • Precision machined aluminum piston with PTFE piston band
  • Three-step sealing system for long-term durability
  • 100% dyno tested and serialized at the factory
  • Revalveable and rebuildable by QA1 or QA1 Authorized Service Centers
  • Made in the USA

Kit Includes:

  • (2) QA1 Proma Star DD501 double adjustable coil-over shocks
  • (2) 12-inch variable rate 130/250 lb/in springs
  • All mounting hardware

This Pro-Rear system is the ideal solution for custom chassis builds, muscle cars, and street rods where a weld-in coilover conversion is required. All QA1 shocks are backed by a Limited Lifetime Warranty when registered at QA1.net/warranty.

Products specifications

Adjustable Mounting Bracket Included

Yes

Adjustable Valving

Yes

Bushing Color

Natural

Bushing Material

Steel

Coil-Over Kit Position

Rear

Coil-Over Springs Included

Yes

Collapsed Length (in)

11.625 in.

Crossmember Included

Yes

Extended Length (in)

17.000 in.

Gas Charged

No

Lower Mount

Eyelet

Notes

Includes 12 in. coil-over springs. Shocks are remote ready, they can be used with the QA1 two or four channel remote adjustable system.

Number of Valving Selections

576

Quantity

Sold as a kit.

Recommended Rear-End Weight

1,301-1,550 lbs.

Shock Body Finish

Clear anodized

Shock Body Material

Aluminum

Shocks Included

Yes

Spring Finish

Silver powdercoated

Spring Rate (lbs/in)

130-250 lbs./in.

Suspension Height Adjustment

Stock

Upper Mount

Eyelet

Variable Rate Springs

1301-1550 lbs (12-130/250 Springs)

Welding Required

Yes

Prop 65

WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov

Title

QA1 Shock Absorber and Coil Spring Assembly DD501-12130V

great price ...fast shipping thanks

cool

Great price and really fast shipping. Great communication as well.

I have to return two of my items, still waiting for return information.

Quick transaction.

U OFFER PAY PAL IT WOULDNT WORK THATS BS

easy to use - like the option of using amazon account for checkout

fast,i like to order and go,

My son lives about 1500 miles from me. He had asked me to get him an Industries SuperFlow Hi-Volume Air Compressor for Christmas. <br>With a couple of click on my computer, the compressor was ordered to be shipped to him and was paid for. He had the exact compressor he requested within five days.(and that included the weekend)<br>One word sums up my experience---EASY

Order Process was quick and easy. I would highly recommend this site.

Better prices and even better service. Will do business with again.

Shipped and received quickly, good communication on question I had

thanks

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy