QA1 Springs
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Linear Rate Springs
Winning is as important to us as it is to you and we know that cannot be done with inferior products. That is why we use chrome silicone wire in our complete line of coil-over springs – it’s the best material you can buy. All of our springs are cold wound, double shot-peened and double heat-treated to ensure consistency and precise rates. The ends are double ground to produce a precise mating surface to eliminate spring deflection. All of our springs are powder coated for durability and great appearance. As with all QA1 Motorsports products, we are committed to providing the best possible products at the best possible price.

All QA1 Motorsports springs are lifetime guaranteed to remain within 5% of the original free height.

 
 

Variable Rate Springs
Click Here for Pricing, Dimensions, and Part Numbers
Why consider variable rate springs?
The benefits of variable rate springs are numerous for Street Rodders, Pro Streeters and in competition. For the Street Rodders and Pro Streeters, variable rates help compensate for weight changes better than linear rates springs. For example, when you’re cruising around with one person and a partially filled gas tank, the suspension needs a lighter spring rate than when you’re heading for a weekend show. For that weekend show you might have a full tank of gas, luggage, the spouse and other things loaded in the car. In that case, a heavier spring rate is needed to help keep the wheel well off the tires. That is the advantage of a variable rate spring – it does not have to compress as far to compensate for the weight change. When you are just cruising, you would be running on the softer section of the spring. When you are loaded, you are working on the higher rate section without losing as much ride height.

Here is an example of how a variable rate spring works:
Linear rate 12 in. – 130 lbs. per in. – every inch of 
compression adds another 130 lbs. 
1” = 130 lbs., 2” = 260 lbs., 3”= 390 lbs.
Variable rate 12 in. - 130/250 
1” = 130 lbs., 2” = 290 lbs., 3”= 480 lbs.

In road course competition the same principles apply. In some sections of a road course, the lighter spring rate is preferable. When diving into a corner, the increased spring rate is needed to compensate for the shift in weight. Advantages exist for drag racing also. The lighter spring rate allows easier weight transfer at the initial hit of the tire. Once the weight is on the rear tires, the increased spring rate helps carry the load of the full weight of the car. In either case, street or competition, you get the best of both worlds!
Linear Rate Springs
 

1 5/8" I.D. Powder Coated, Chrome Appearing
Quarter Midget Springs

1 7/8" I.D. Powder Coated, Chrome Appearing
Use with Small Body Shocks

1 7/8" I.D. Chrome
Use with Small Body Shocks

2.5" I.D. Powder Coated, Chrome Appearing
2.5" I.D. Chrome





Variable Rate Springs
2.5" I.D. Powder Coated, Chrome Appearing