Coil Spring - 2.5in x 9 300#

The QA1 Coil Spring 2.5in x 9 300# is a specialized coil spring designed for automotive suspension systems, ideal for enthusiasts and mechanics performing suspension upgrades or custom chassis work. This spring is engineered to deliver consistent rate characteristics across its entire stroke, making it suitable for various applications, including street cars and track vehicles.

With a spring rate of 300 pounds per inch, this coil spring maintains linear force progression, which is essential for independent front suspension systems or rear-end applications. Constructed from high-carbon alloy steel, QA1 springs undergo precision coiling and heat treatment to ensure durability and performance over thousands of compression cycles.

This spring is compatible with common aftermarket suspension platforms, double-wishbone setups, and MacPherson strut applications. Mechanics and fabricators often utilize 300# rates in conjunction with appropriate dampening tuning to achieve optimal handling and comfort in various driving conditions.