QA1 Suspension Stabilizer Bar Assembly 52880Product Overview Tighten up the rear end of your NBS truck with QA1s 1. 25" rear sway bar kit. Designed for 2WD Silverado and Sierra 1500 models, this upgrade helps improve rear end stability, reduce body roll, and bring better balance to your trucks handlingespecially when paired with QA1s front sway bar and torque arm rear suspension. LESS BODY ROLL, MORE CONTROL A larger 1. 25" diameter delivers increased stiffness and helps keep your truck