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In-Store Pickup Location

QA1 Level 3 Handling Suspension Kits HK03-GMG1

Suspension Package, Level 3 Handling, GM, 1978-88 G-Body, With Front/Rear Shocks, Kit

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  • This part is shipped via truck freight, additional shipping charges will apply. Multiple truck freight parts on an order may increase the shipping amount.

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Brand: QA1

Manufacturer's Part Number: HK03-GMG1

Part Type: Suspension Handling Packages

Product Line: QA1 Level 3 Handling Suspension Kits

Summit Racing Part Number: QA1-HK03-GMG1

UPC: 806990132116

Front Coil Springs Included: Yes

Rear Coil Springs Included: Yes

Rear Leaf Springs Included: No

Front Shocks/Struts Included: Yes

Front Shock Type: Double adjustable coilover

Rear Shocks/Struts Included: Yes

Rear Shock Type: Double adjustable coilover

Front Sway Bar Included: Yes

Front Sway Bar Finish: Black powdercoated

Front Sway Bar Type: Hollow

Front Sway Bar Diameter (in): 1.375 in.

Front Sway Bar Diameter (mm): 34.93mm

Rear Sway Bar Included: Yes

Rear Sway Bar Finish: Black powdercoated

Rear Sway Bar Type: Solid

Rear Sway Bar Diameter (in): 1.000 in.

Rear Sway Bar Diameter (mm): 25.40mm

Tie Rod Sleeves Included: Yes

End Link Bushings Included: Yes

Rear Leaf Spring Bushings Included: No

Sway Bar Bushings Included: Yes

Upper Trailing Arms Included: Yes

Lower Trailing Arms Included: Yes

Trailing Arm Mount Braces Included: Yes

Panhard Bar Included: No

Torque Arm Included: No

Upper Control Arms Included: Yes

Lower Control Arms Included: Yes

Control Arm Style: Tubular

Control Arm Material: Steel

Control Arm Finish: Black powdercoated

Front Strut Tower Bar Included: No

K-Member Support Brace Included: No

Rear Strut Tower Bar Included: No

Subframe Connectors Included: No

Chassis Stiffener Included: No

Calipers Included: No

Rotors Included: No

Brake Pads Included: No

Brake Lines Included: No

Wheel Studs Included: No

Center Link Included: No

Spindles Included: No

Inner Tie Rod Ends Included: No

Outer Tie Rod Ends Included: No

Mounting Hardware Included: No

Quantity: Sold as a kit.

Notes: Designed for 1978-88 GM G-body vehicles. Includes front double adjustable Pro Coil shock system, rear double adjustable Pro Coil shock system, thrust bearing kit, spanner wrench, front sway bar, rear sway bar, boxed lower trailing arms, adjustable upper trailing arms, upper race control arms, lower race control arms, tie rod adjuster sleeves, adjustable frame brace, ball joint tool kit, and trailing arm hardware.

In-Store Pickup: Choose In-store pick-up (OH, NV, GA, TX) on our web site.

Top performance is the desired goal of many automotive upgrades—precisely what QA1 Level 3 handling suspension kits deliver. Compared with the Level 1 and 2 packages, these heavy-duty assemblies offer additional control components, as well as stiffer springs to maximize your cornering ability and handling on average-weight small block and LS-powered vehicles with stock trim. QA1 Level 3 kits are available with or without shocks and struts—giving you the flexibility to obtain the shocks or struts and spring rates you want. Many of these Level 3 bolt-in components are built for race-quality performance, and all will work seamlessly with whatever OEM parts you attach them to.


Most Helpful Reviews Review This Product

1 Customer Reviews for QA1 HK03-GMG1 - QA1 Level 3 Handling Suspension Kits

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Good Quality, Mixed Results

First let me say that the quality on this kit is awesome, the fit and finish is clean, the welds are great and you really feel like you are installing a quality set of components. The directions that come with the kit are fantastic and all encompassing. The main problem is a ride height limitation of the hybrid style coilovers. I ordered the kit with 550lb springs to help turn my iron headed small block Chevy powered 1986 Monte Carlo SS into an autocross car. The biggest problem is ride height, even with the spring perch as low as it will go, the car is still only about .5 inches below factory ride height. The laughable suggestion from QA1 was to go to a 350lb spring. On a street car for looks, sure a lower spring rate might be tolerable, but not a car built for track days and autocross competition. QA1 does not offer custom length hybrid springs which is unfortunate. The only possible option to lower the car further is the use of a taller lower ball joint which I purchased but have not installed yet. I wanted to rate the kit lower, but despite the ride height not being where i want it, the car does ride and handle excellent. The adjustable shocks in a sport tuning are firm and crisp, but when put into a comfort tuning ride like a Cadillac. I'm really hoping that QA1 eventually offer shorter, higher spring rate options for this coilover kit. I would surely buy a few sets for tuning purposes. more

4 of 4 found this review helpful.

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Reviewer: from MI

Date: June 07, 2017

Ease of Installation
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