WHY CHOOSE OUR HELPER SPRING KIT? When your truck starts to sag under load, towing becomes unstable and hauling heavy cargo puts extra stress on your suspension. Our heavy-duty helper spring kit is engineered to restore ride height, improve load control, and provide dependable rear suspension support without the complexity of air systems. Designed specifically for Silverado 1500 and Sierra 1500 models, this leaf spring helper kit delivers strength, stability, and long-term durability for real working trucks. Whether you're towing a trailer, hauling equipment, or carrying daily job-site loads, these helper springs for truck applications help maintain balance and driving confidence. Function & Material Advantages RESTORES RIDE HEIGHT & ELIMINATES REAR SAG: Heavy loads can cause rear squat, uneven weight distribution, and poor handling. This leaf spring assist system adds up to 2,000 lbs of load-leveling support to help keep your truck level under towing and hauling conditions. By reinforcing factory leaf springs, these rear helper springs reduce excessive suspension compression and restore proper stance. IMPROVES TOWING STABILITY & CONTROL: A sagging rear suspension affects steering response and braking balance. Our leaf spring helper design enhances rear suspension firmness, helping reduce sway, bounce, and trailer instability. The added support improves overall towing stability and gives you better control on highways, job sites, and uneven terrain. HEAVY-DUTY HEAT-TREATED SPRING STEEL: Manufactured from high-strength, heat-treated alloy steel, these truck helper springs are built for demanding loads and repeated heavy use. A corrosion-resistant finish protects against rust, road debris, and harsh weather conditions, ensuring long-lasting performance and reliability. SIMPLE BOLT-ON INSTALLATION: This mechanical leaf spring helper kit installs using included mounting hardware with no air lines, compressors, or special maintenance required. Once installed, it provides consistent rear suspension support whenever load is applied. Vehicle Fitment This single leaf helper spring kit is compatible with: 2007–2022 Chevrolet Silverado 1500 2WD / 4WD All trims including: WT, LS, LT, LTZ, RST, Custom, Trail Boss, High Country, SSV, Hybrid 2007–2022 GMC Sierra 1500 2WD / 4WD All trims including: Base, SLE, SLT, Denali, Elevation, AT4, Hybrid Fits factory rear leaf spring suspension Installs under factory U-bolt plate Does NOT fit models with rear coil spring suspension Quality Guarantee: 2-Year Warranty