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In-Store Pickup Location

QA1 Level 3 Handling Suspension Kits HK03-GMA1

Suspension Package, Level 3 Handling, GM, 1964-67 A-Body, With Front/Rear Shocks, Kit

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  • Order this item and get free delivery and handling on your entire order! Offer excludes truck freight and oversize fees. Valid on orders shipped in the contiguous United States.

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Brand: QA1

Manufacturer's Part Number: HK03-GMA1

Part Type: Suspension Handling Packages

Product Line: QA1 Level 3 Handling Suspension Kits

Summit Racing Part Number: QA1-HK03-GMA1

UPC: 806990132062

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): 1.250 in.

Front Sway Bar Diameter (mm): 31.75mm

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 1964-67 GM A-Body vehicles. Includes front double adjustable Pro Coil shock system, rear double adjustable Pro Coil shock system, thrust bearing kit, 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 kit.

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.


Questions & Answers Ask a Product Question

Will this work for BBC cars as well?

Asked by MATT on April 14, 2018


Hi Matt - The HK03-GMA1 is designed for use with an average weight car with a small block. If you're running a big block you can order the HK13-GMA1. This kit has everything the HK03-GMA1 has with the exception of the coil-overs. This allows you to select the coil-overs with the right springs for your application. There is no price penalty going this route. Call the tech line if you need help selecting the right part numbers. Thanks!

QA1 QA1 Answer - April 16, 2018

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Do you offer this kit without the swaybars?

Asked by THERON on March 13, 2019


We do not offer this kit without the sway bars. The only way would be to order all the pieces individually. You can find the other part numbers in the kit listed under Kit/combo contents from Summit, or call in to their tech line for any part selection assistance.

QA1 QA1 Answer - March 15, 2019

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Hi,i need to know if that kit is for race or street?

Additional of coilovers what is the differnce of level 3 and level 2?

Asked by LUIS on December 24, 2018


Thank you for the question. The Level 3 handling kits include our race control arms with UMHW pivot bushings and QA1 low friction ball joints. The Level 3 kits include double adjustable coil-over shocks instead of single adjustable, slightly firmer spring rates and adjustable upper trailing arms. Either the Level 2 or Level 3 kit can be used on the street depending on what level of performance and adjustability you are looking for.

QA1 QA1 Answer - December 26, 2018

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Will the coil overs fit a car with original drum brakes?

Asked by THERON on January 25, 2018


Hi Theron - Yes, this kit will work with a drum brake car. Thanks!

QA1 QA1 Answer - February 02, 2018

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Some parts are not legal for use in California or other states with similar laws / regulations

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