Description

QA1 HD Pro rear drag 4-link kits are built to put down serious power! Streamlining the fabrication process, these systems deliver professional-grade results and performance in a convenient, easy-to-order kit. They are designed for the hardcore, discerning, do-it-yourself racer looking for a no-compromise solution to take their vehicle to the next level in performance and adjustability.

Offered with or without QA1's MOD Series 4-way adjustable coilover shocks, or 7 in. travel, track-proven single or double adjustable coilover shocks, each kit contains high-quality, MIG-weldable components to ensure a safe and properly engineered design that can be easily adapted into many drag racing setups. A components kit is also offered without coilover shocks and lateral locating device. Find convenience, safety, and performance all in a QA1 HD Pro rear drag 4-link system. Select the kit best suited to your drag race suspension setup.

Features, benefits, and contents:

* Drag race-style 4-link design:
-- Performance and adjustability
-- Wide range of instant center tuning and on-car adjustability
-- Components can be cut to length
-- 40 in. or narrower frame rails
* 1/4 in. thick plates
* 1 1/4 in. diameter, 22 in. length trailing arm tubes
* Grade 8 hardware
* QA1 chromoly rod ends
* 40 in. shock crossmember and mounting tabs
* 40 in. diagonal link kit with mounting brackets (not in components kit)

Product Overview

Product Overview: QA1's Heavy Duty Pro Rear Drag 4-link kit streamlines the fabrication process, delivering professional-grade results and performance in a convenient and easy-to-order kit all from one source. This 4-link system is designed for the hardcore, discerning, do-it-yourself racer looking for a no-compromise solution to take their vehicle to the next level in performance and adjustability. High quality, MIG-weldable components ensure a safe and properly engineered design that can be easily adapted into many drag racing setups. Find convenience, safety, and performance all from QA1 with the HD Pro Rear Drag 4-Link. Performance: This drag race-style 4-link design is known for its performance and adjustability, and features a wide range of instant center tuning and on-car adjustability. The components are adaptable and can be cut to length to work in any setup with 40 inch or narrower frame-rails. Heavy Duty Design: This heavy-duty design can handle the demands of high-performance racing. With inch-thick plates, 1-1/4 inch trailing arm tubes, Grade 8 hardware, and QA1 chromoly rod ends, these kits are built to put down serious power. Adaptability: This kit contains all the components and hardware needed for assembly and mounting of the trailing arms and four link. A lateral locating device is required, and you can look to QA1 for additional components that will help with drag race suspension setup. Look to the provided dimensional diagrams and renderings to help with your custom install. Kit Contents: 22 Trailing arm tubes, brackets, rod ends, tube adapters 40 shock crossmember and mounting tabs Grade 8 hardware kit Made in the USA Fitment Notes Welding required Trailing arm tubes can be cut to length Works with 3 in. axle tubes Works on 40 in. and narrower frame rails Does not include a lateral locating device

Features and Benefits

• Heavy-duty design
• Wide range of tunability
• Includes all hardware
• Best-in-class warranty
• Made in the USA

Product Details

Brand:	QA1
Description:	QA1 Heavy Duty Pro Rear Drag 4-Link Component Kit
Manufacturer Part Number:	7838-1067
Part Number:	qap7838-1067
Prop 65 - Short Label:	WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov
Prop 65 Yes/No:	Yes
Title:	QA1 Four-Link Suspension Assembly 7838-1067
UPC:	806990175427

Kit Options

This item is available as a full kit.
Select a kit option in the following table if you are looking for this item in a bundle form with all associated components.

Kit option/s:

Thumb	SKU	Kit Title
	qapR170-110	QA1 Heavy Duty Pro Rear Drag 4-Link System - Single Adjustable - 110lb Springs (2x qap14HT110, 2x qapDS701, 1x qap7838-1067, 1x qap7838-1068)
	qapR170-150	QA1 Heavy Duty Pro Rear Drag 4-Link System - Single Adjustable - 150lb Springs (2x qap14HT150, 2x qapDS701, 1x qap7838-1067, 1x qap7838-1068)
	qapR270-110	QA1 Heavy Duty Pro Rear Drag 4-Link System - Double Adjustable - 110lb Springs (2x qap14HT110, 2x qapDD701, 1x qap7838-1067, 1x qap7838-1068)
	qapR270-150	QA1 Heavy Duty Pro Rear Drag 4-Link System - Double Adjustable - 150lb Springs (2x qap14HT150, 2x qapDD701, 1x qap7838-1067, 1x qap7838-1068)
	qapR370-110	QA1 Heavy Duty Pro Rear Drag 4-Link System - MOD Shocks - 110lb Springs (2x qap14HT110, 1x qapM711PL, 1x qapM711PR, 1x qap7838-1067, 1x qap7838-1068)
	qapR370-150	QA1 Heavy Duty Pro Rear Drag 4-Link System - MOD Shocks - 150lb Springs (2x qap14HT150, 1x qapM711PL, 1x qapM711PR, 1x qap7838-1067, 1x qap7838-1068)

Data: v4.2 - Upd: 2026-10-07 19:20:58

Features

Specifications

Product Attributes - Brand

QA1

Product Attributes - Manufacturer's Part Number

7838-1067

Product Attributes - Part Type

Suspension Link Kits

Product Attributes - Product Line

QA1 HD Pro Rear Drag 4-Link Systems

Product Attributes - UPC

806990175427

Product Attributes - Overall Length (in.)

28.79 in.

Product Attributes - Crossmember Included

No

Product Attributes - Diagonal Link Included

No

Product Attributes - Shock Mounts

Yes

Product Attributes - Wheelie Bar Mounts

Yes

Product Attributes - Tube Finish

Natural

Product Attributes - Tube Material

Steel

Product Attributes - Upper Tube Diameter (in.)

1.250 in.

Product Attributes - Lower Tube Diameter (in.)

1.250 in.

Product Attributes - Rod Ends Included

Yes

Product Attributes - Hardware Included

Yes

Product Attributes - Welding Required

Yes

Product Attributes - Axle Tube Diameter (in.)

3.00

Product Attributes - Quantity

Sold as a kit.

Compatibility