1979-93 Mustang QA1 Proma Star Double Adjustable Front Strut - Pair by QA1

1979-93 Mustang QA1 Proma Star Double Adjustable Front Strut - Pair
1979-93 Mustang QA1 Proma Star Double Adjustable Front Strut - Pair
1979-93 Mustang QA1 Proma Star Double Adjustable Front Strut - Pair
1979-93 Mustang QA1 Proma Star Double Adjustable Front Strut - Pair

Upgrade your 1979-1993 Fox Body Mustang suspension while dialing in the performance with this QA1 double adjustable Proma Star front strut pair!

Item #QA1-HD01K

Everyday Low Price: $1,099.90

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  • Ford Mustang - 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993
Fitment Notice
  • Caster Camber plates are required.
  • Coil over conversion kits available as QA1 #COK113
Adjustment notes
  • Pressing the adjustment knob DOWN will adjust the Compression valving of the strut. Pulling the adjustment knob UP will adjust the Rebound valving.
  • Out of box, the strut should be at zero compression and rebound setting, or both adjustments turned counterclockwise to stop. From the zero setting with the knob in the Compression position (pushed down), adjust clockwise to the desired setting. The Rebound setting will remain in the zero position.
  • To adjust Rebound, pull the knob up to the Rebound adjust position and adjust clockwise to the desired setting.
  • Either setting can now be adjusted up or down from the initial setting. When in doubt, turn the Compression to zero and then Rebound to zero and readjust.
Made in the USA


  • Increased Dampening rate
  • Improved Handling
  • Made in the USA


  • 18 position Double-Adjustable
  • Threaded Body For Coil Overs
  • DOM Steel Constructions
  • Inverted Strut Design

 What's in the Box

  • (2) QA1 Front Strut

QA1 Proma Star Double Adjustable Front Strut - Pair
When it comes to upgrading your 1979-1993 Fox Body Mustang's suspension, no one wants to settle for anything less than perfect; go with QA1 Proma Star double adjustable front struts. Whether you are looking to have a mild drag setup, have a comfortable street ride, or firm your ride up for autocross, QA1's struts have what you need. A major advantage of the Proma Star strut is its inverted cartridge design. Unlike conventional designs, its large diameter shaft resists side loading, ensuring smoother and more consistent performance during hard cornering and braking. 

QA1 Quality
High-performance DOM steel is used for superior strength. A lightweight threaded aluminum body allows height adjustment from stock to 2.0" lowered with the addition of a coilover conversion kit. QA1 double adjustable struts provide different adjustments with a single turn of a knob! Eighteen valving settings on one knob simultaneously adjust compression and rebound independently on the shock. Constructed in the USA, QA1 dyno tests and serializes each kit for superior quality control, along with being fully serviceable and rebuildable by any QA1 authorized service center. The adjustment knob has a durable red anodized finish, resists corrosion, and looks good in your engine bay. QA1 Proma Star struts are proudly made in Lakeville, Minnesota.

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About This Brand

QA1 specializes in providing performance shock absorbers, carbon fiber driveshafts, suspension, rod ends, spherical bearings, ball joints and other related items to a variety of markets including circle track racing; drag racing; street performance; street rodding; as well as several other industrial markets. With over 83,000 square feet of manufacturing space in Lakeville, MN, QA1 is proud to offer an extensive line of American made shock absorbers and accessories. Experience in value-added global sourcing for aluminum forgings and impact extrusions contributes to their ability to provide the highest quality components at economical prices. With a wide-ranging product line, the ability to meet OEM custom requirements, and economical prices, QA1 has constantly focused on exceeding its customers' expectations. Shop our selection of Mustang and SVT Lightning QA1 suspension components at!
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