Rear Spring

The RS-R Superdown Springs (Part # N129S) are engineered to deliver a significantly lowered vehicle stance while simultaneously enhancing handling characteristics. RS-R meticulously considers the original suspension geometry, shock dampening capabilities, and factory ride height to create springs that optimize both performance and ride comfort. This application is specifically for the 2014-2015 Infiniti Q50 Hybrid Premium and Hybrid Sport models equipped with Rear-Wheel Drive. These springs offer a noticeable drop, with a specified lowering range of 35-40mm in the front and 25-30mm in the rear. The spring rates are set at 7.36kg/mm for the front and 3.67kg/mm for the rear, providing a firmer response without sacrificing too much ride quality. The "Superdown" designation indicates an aggressive lowering profile compared to standard "Down Sus" springs. Installation is intended to be a direct replacement for the factory springs. While the product page implies straightforward installation, professional installation is always recommended for suspension components to ensure proper alignment and safety. It is crucial to verify fitment with your specific vehicle's trim and drivetrain configuration before purchase.