Hellwig 07-21 Chevy Silverado 1500 2/4WD EZ Level 990 Helper Spring - Up To 2000lbs Roofs & Roof Accessories>Hard Top Accessories eliminating any possibility of blowout

eliminating any possibility of blowout or deterioration over long-term use

4 Throttle Body Bolts

This system provides a +16% air-flow increase over stock

while safely increasing horsepower and giving that extra boost that every driver appreciates

Hellwig 07-21 Chevy Silverado 1500 2/4WD EZ Level 990 Helper Spring - Up To 2000lbs Roofs & Roof Accessories>Hard Top Accessories eliminating any possibility of blowoutHellwig's medium duty EZ 990 Helper Springs pack a lot of capability in every box. Packaged complete with the same heavy duty powder coated and plated components, hardware and installation instructions as our heavy duty helper spring products, these kits are designed for the vehicles that need lighter assistance in carrying a load. Simple bolt on design using common hand tools provide the installer ease of installation and the vehicle owner hassle