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Qa1

QA1 Pro Rear Weld-In Coil-Over System - MOD Series - 12in x 150lbs/in - 3.25in Tube - Aluminum

SKU: QAPDM501-1501

Coilover Kits

QAP Coil-Overs - Weld-In...

Qa1

QA1 Pro Rear Weld-In Coil-Over System - MOD Series - 12in x 150lbs/in - 3.25in Tube - Aluminum

SKU: QAPDM501-1501

Coilover Kits

QAP Coil-Overs - Weld-In...

A$4,299.76
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
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Description

QA1 MOD Series conversion systems enable you to fabricate your own custom-mount weld-in rear coilover suspension system in any non-leaf spring vehicle. The kits are available for different rear-end vehicle weight—in adjustable ranges from 1,050 to 1,700 lbs.—as well as for 3 in. or 3.25 in. axle diameters. Order the model designed to fit your application.

Pro coil systems include:

* (2) Coilover shocks
* (2) Linear rate springs
* 1.625 in. O.D. x .095 in. wall x 40 in. long weld-in tube
* All mounting hardware

Product Overview

Upgrade your rear end with QA1's Pro-Rear System. Available in the MOD series, double adjustable, single adjustable and ride sensitive valving non-adjustable options,each adjustment has been carefully defined to provide the ideal horse curve to maximize performance. With evenly spaced valving changes throughout the adjustment range, there are no jumps when adjusting between any two clicks. These Pro-Rear Systems are commonly used in drag racing, street performance and street rod applications. Available in Simultaneous Compresion and Rebound Single Adjustable (DS), Independent Compression & Rebound Double Adjustable (DD) or Ride Sensitive Non-Adjustable (ALN), Coil-Over, Lightweight Aluminum, Ride Height Adjustable, Spring Mounting Hardware Included, 100% Dyno Tested and Serialized, Revalveable and Rebuildable by the QA1 Factory or QA1 Authorized Service Centers, Precision Machined Aluminum Piston with PTFE Piston Band, 5/8" Centerless Ground, Hard Chrome Plated, Solid Piston Rod, Three Step Sealing System, Available to Fit 3" or 3.25" Diameter Axle Tubes, Made in the USA, , Kit includes:, (2) Proma Star Shocks or Aluma Matic Shocks, (2) Linear or Variable Rate Springs, All Mounting Hardware.


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 Pro Rear Weld-In Coil-Over System - MOD Series - 12in x 150lbs/in - 3.25in Tube - Aluminum
Manufacturer Part Number:DM501-1501
Part Number:qapDM501-1501
Prop 65 - Short Label:WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov
Prop 65 Yes/No:Yes
Title:QA1 Shock Absorber and Coil Spring Assembly DM501-1501
UPC:806990159519

Part Type

Coilover Adjustable Spring Lowering Kit

Data: v4.2 - Upd: 2026-10-14 14:41:25

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
DM501-1501
Product Attributes - Part Type
Coilover Kits
Product Attributes - Product Line
QA1 Rear MOD Series Pro Coilover Conversion Systems
Product Attributes - UPC
806990159519
Product Attributes - Coilover Kit Position
Rear
Product Attributes - Adjustable Valving
Yes
Product Attributes - Number of Valving Selections
576
Product Attributes - Shocks Included
Yes
Product Attributes - Internal Design
Twin-tube
Product Attributes - Coilover Springs Included
Yes
Product Attributes - Spring Rate (lbs/in.)
150 lbs./in.
Product Attributes - Suspension Height Adjustment
0.0-1.5 in. lowered
Product Attributes - Recommended Rear-End Weight
1,500-1,700 lbs.
Product Attributes - Gas Charged
Yes
Product Attributes - Extended Length (in.)
16.88
Product Attributes - Collapsed Length (in.)
11.50
Product Attributes - Upper Mount
Bearing
Product Attributes - Lower Mount
Bearing
Product Attributes - Shock Body Material
Aluminum
Product Attributes - Shock Body Finish
Silver
Product Attributes - Bushing Material
Spherical bearing
Product Attributes - Bushing Color
Natural
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
For use with 3.250 in. diameter axles. Coilover shocks are double adjustable Mod Series shocks. Springs are 12 in. linear rate 12HT150 springs. Includes a 1.625 in. O.D. x 0.095 in. wall x 40.000 in. long weld-in tube.

Reference Information

Brand Name/s Qa1
StreetFX SKU qapDM501-1501
SFX Item ID 4093373
Supplier Item Code 4093373
Manufacturer SKU DM501-1501
Manufacturer UPC 806990159519
Alternative References qa1, QA1-DM501-1501, 12in, 150lbs/in, 3.25in

Compatibility

Application Data
  • UniversalYes

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