The Traxxas 5445 GTR purple shock spring is a genuine OEM replacement part designed to provide precise suspension tuning and consistent handling performance. Made from high-quality steel, it offers durability, strength, and long-lasting performance while maintaining the correct ride height and shock response. Built to Traxxas factory specifications, this purple shock spring ensures a precise fit and straightforward installation, making it ideal for repairs, upgrades, or routine maintenance of your Traxxas GTR shocks.