Australia-wide shipping on performance, 4x4 and vehicle-specific upgrades.

Qa1

QA1 HD Pro Rear Weld-In Coilover Kit 250lb/in. S-Adj. 3.00in

SKU: QAPDS501-12250

Coilover Kits

QAP Coil Shocks - Proma Star

Qa1

QA1 HD Pro Rear Weld-In Coilover Kit 250lb/in. S-Adj. 3.00in

SKU: QAPDS501-12250

Coilover Kits

QAP Coil Shocks - Proma Star

A$2,190.98
IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.
View cart
We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

QA1's Heavy Duty Pro Rear Systems are the perfect solution to add a coilover setup to your car or truck. Designed for a variety of applications, these weld-in systems include hardware and bracketry for a seamless installation, allowing you to fabricate your own rear suspension in virtually any non-leaf spring vehicle. Get the custom-mount rear-end setup you've always wanted when you order the QA1 Rear HD Pro Coilover Conversion Systems best suited for your ride.

Product features and items include:

* (2) coilover shocks
* (2) springs – linear or variable rate (application dependent)
* Weld-in tube dimensions – 1.625 in. outside diameter x 0.095 in. wall thickness x 40.000 in. long
* All mounting hardware

Product Overview

Product Overview QA1's Heavy Duty Pro Rear Systems are the perfect solution to add coilovers to your car or truck. Designed for any vehicle with a 1700-2600 lbs. rear axle weight, this kit includes all the necessary hardware and bracketry for a seamless installation. With double shear bracketry and increased spring rates, it ensures the strength and support you need for street and race applications. This simple weld-on kit features axle mount bracketry, upper shock mounts and tubing, and fully adjustable QA1 coilover shocks and springs. Ride Height Adjustability Our axle-mounted brackets offer increments of adjustment, and the coilover shock allows for fine-tuning. Combined, you will have a total of 9 of ride height adjustability, giving you full control for your desired stance. Single-Adjustable Coil-Overs QA1 single adjustable Proma Star shocks deliver exceptional ride quality and performance. With the simple turn of a dial, you can effortlessly switch between a comfortable cruise and a more aggressive feel, making them ideal for daily driving or twisty backroads. Easy, Weld-In Installation Each kit comes complete with the essential brackets, tabs, and hardware, making it a simple weld-on solution to get the job done efficiently without excess fabrication or trips to the parts store. Best In-Class Lifetime Warranty Register at QA1.net/warranty for lifetime coverage of your QA1 shocks. Made in the USA QA1's Heavy Duty Pro-Rear Systems is proudly made in Lakeville, Minnesota. Fitment Notes Welding required Designed for 3.00 axle tubes Included tubular upper shock mount dimensions are 1-5/8 diameter x .095 wall, 40 long Requires use of QA1 spanner wrench T114W or T115W


Features and Benefits

  • Excellent DIY solution for drag, street performance & street rodders alike
  • Available with MOD Series, double, single or non-adjustable valving options
  • All mounting hardware included
  • Made in the USA

Product Details

Brand:QA1
Description:QA1 HD Pro Rear Weld-In Coilover Kit 250lb/in. S-Adj. 3.00in
Manufacturer Part Number:DS501-12250
Part Number:qapDS501-12250
Prop 65 - Short Label:WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov
Prop 65 Yes/No:Yes
Title:QA1 Suspension Shock Absorber and Coil Spring Assembly DS501-12250
UPC:806990169983

Part Type

Coilover Adjustable Spring Lowering Kit

Data: v4.2 - Upd: 2026-10-03 00:58:53

Features

  • All mounting hardware included
  • Available with MOD Series, double, single or non-adjustable valving options
  • Excellent DIY solution for drag, street performance & street rodders alike
  • Made in the USA

Specifications

Product Attributes - Brand
QA1
Product Attributes - Manufacturer's Part Number
DS501-12250
Product Attributes - Part Type
Coilover Kits
Product Attributes - Product Line
QA1 Rear HD Pro Coilover Conversion Systems
Product Attributes - UPC
806990169983
Product Attributes - Coilover Kit Position
Rear
Product Attributes - Adjustable Valving
Yes
Product Attributes - Number of Valving Selections
18
Product Attributes - Shocks Included
Yes
Product Attributes - Internal Design
Twin-tube
Product Attributes - Coilover Springs Included
Yes
Product Attributes - Spring Rate (lbs./in.)
250 lbs./in.
Product Attributes - Gas Charged
No
Product Attributes - Extended Length (in.)
16.88
Product Attributes - Collapsed Length (in.)
11.63
Product Attributes - Upper Mount
Bearing
Product Attributes - Lower Mount
Bearing
Product Attributes - Shock Body Material
Aluminum
Product Attributes - Shock Body Finish
Silver
Product Attributes - Spring Finish
Gray/Silver
Product Attributes - Crossmember Included
No
Product Attributes - Adjustable Mounting Bracket Included
Yes
Product Attributes - Hardware Included
Yes
Product Attributes - Welding Required
Yes
Product Attributes - Quantity
Sold as a kit.
Product Attributes - Notes
Designed for 3.00 in. axle tubes. Included tubular upper shock mount dimensions are 1-5/8 in. diameter x .095 in. wall, 40 in. long. Requires use of QA1 spanner wrench T114W or T115W.

Reference Information

Brand Name/s Qa1
StreetFX SKU qapDS501-12250
SFX Item ID 4095895
Supplier Item Code 4095895
Manufacturer SKU DS501-12250
Manufacturer UPC 806990169983
Alternative References qa1, QA1-DS501-12250, 250lb/in., 3.00in

Brochures

Compatibility

Application Data
  • UniversalYes

Loading compatibility information...

Keep shopping

More from Qa1