QA1 Precision Products Spring, CR-SI High Travel 2-1/2" ID 12" X 130

2 ½" I.D. Variable Rate Springs

Available in 10" and 12" free lengths, QA1 offers an assortment of rates of variable rate springs. With a silver powder coated finish, QA1's variable rate springs are made with the highest quality materials. QA1 springs are strong, consistent, have a long life and lifetime guaranteed to remain within 2% of the original free height and rate under normal operating conditions.

Variable rate springs help compensate for weight changes better than linear rate springs.

Chrome Silicon Steel (CrS)
All QA1 springs are manufactured using the highest quality materials for high strength, consistency and long life.

Cold Wound - Heat Treated - Shot Peened
All QA1 springs go through intensive manufacturing processes to ensure consistency, accuracy and durability.

Squared Ends
All QA1 springs are ground at both ends to ensure straight, consistent and accurate operation.

Protective Coated
QA1 springs are silver powder coated for excellent longevity and the ultimate in appearance.

Lengths and Rates Marked
All QA1 springs are clearly marked with the free length of the spring and spring rate for quick and easy identification.

Lifetime Guarantee
All QA1 springs are lifetime guaranteed to remain within 2% of the original free height and rate under normal operating conditions.

Technical Specifications 

An example of how a variable rate spring works:

Linear rate 12 inch spring - 130 lbs. per inch
Every inch of compression adds another 130 lbs.

1" = 130 lbs.
2" = 260 lbs.
3" = 390 lbs.

Variable rate 12 inch spring - 130 /250
In the same amount of travel, the spring rate picks up an additional 90 lbs. of resistance. The spring gets progressively stiffer as it is compressed.

1" = 130 lbs.
2" = 290 lbs.
3" = 480 lbs.