Street. Track. Everything between.
Your garage Find parts for your vehicle Select year, make and model to narrow your search.

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 0
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: 2026-10-13 18:00:38

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