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Mustang II Bolt-On Coil-Over Kit w/ QA1 Shocks
Mustang II Bolt-On Coil-Over Kit w/ QA1 Shocks

Mustang II Bolt-On Coil-Over Kit w/ QA1 Shocks

74-78 Ford Mustang II, Steel Shock Body Material, 3.38 Shock Stroke, Chrome

10 Reviews | 18 Answered Questions
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Mustang II Bolt-On Coil-Over Kit w/ QA1 Shocks
Mustang II Bolt-On Coil-Over Kit w/ QA1 Shocks
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We estimate this item will ship on or before December 17th.
Part # 2559000
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What's In The Kit
Videos & Articles

Important Messages:

  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.

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You're almost there! This kit has an option or two for you to select. Let us know which options you want for your new kit.
Item 1 of 1
Replacement Springs for Mustang II Coilovers
Replacement Springs for Mustang II Coilovers
Quantity: 2
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Shock Body Material:
Shock Stroke:
Compressed Length:
Extended Length:
Thread Length:
MFG. Part #:
Shaft Diameter:
Body Diameter:
Sold in Quantity:


These kits provide the highest quality performance characteristics for your Mustang II front end. The unique "half barrel" shape springs are designed specifically for use with the included coil-over shocks and the factory upper spring pocket. This enables the use of a longer spring, which allows for a lighter overall spring rate. By building the upper section of the spring to factory dimensions, this puts the weight back into the frame instead of on a single stud. 

  • For stock-to-2" lowered cars (no less)
  • Fixed, non-adjustable valving 
  • Developed for high performance with increased travel
  • Fully adjustable ride height using included aluminum spanner nut
  • Easy bolt-in installation
  • Unique spring fits the stock upper seat in the frame
  • Includes 2 chrome body shocks, mounting kit, 2 chrome-plated springs (choose specific rate)

NOTE: Not recommended for front axle weights in excess of 1900 lbs.

Spring Rate Chart (Link)

Coil-Over Mounting Guide (GIF)

Item Details

Includes 2 shocks and 2 springs.


  1. Can be installed with no special tools, and delivers the ride characteristics of "other" coil-overs. 
  2. This is a true bolt-on coil-over kit for all specialty cars using Pinto/Mustang II based front suspensions. Kits work with stock or aftermarket crossmembers and upper control arms, stock lower control arms or tubular replacements will work also. Some fitting required.


  • Shock
    • Mounted Length: 10-5/8" to 11-1/4" (upper shock stud to lower shock eye at ride height)
    • Lower control arm level or slightly higher at inner end 
  • Spring
    • Free Height: 8.125"
    • Small End: 2.5" I.D.
    • Large End: 3.5: I.D.
Some parts are not legal for use in California or other states with similar laws/regulations

Related Products

What's In The Kit

Each kit from Speedway Motors is carefully packaged and delivered right to your door. Below is a list of all the items you should expect to receive when you order this kit. Some of these items may also be available for sale individually if you're here looking for replacement parts.
  • QA1 ME303 Coil-Over Shocks for Mustang II
    Qty x 2
  • Replacement Springs for Mustang II Coilovers
    Qty x 2
  • QA1 Pin Cross 0.750" O.D.
    Qty x 2

More Like This


Q & A

Videos & Articles
  • In this episode, Project Chevelle gets coilovers and a much-needed altitude adjustment. Watch as we install QA1 bolt-on coilover kits front and rear, then dial in the perfect stance and shock settings. Our old Chevelle is really starting to look mean!
  • Get up to date with the latest rule change and successfully update your sprint car support bars with the help of our very own Jason Martin!
  • Product guru Jeff K. takes us along as he updates the suspension on his 1946 Ford Sedan Delivery with a set of fresh Mustang II coilovers following an unfortunate incident with a pothole.
  • Speedway Motors employee Steve is back to work on his 1976 Chevrolet Laguna, this time installing a QA1 Coilover kit in his front suspension.

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