H&R 15-20 BMW M4 Coupe F82 Sport Spring (Incl. Adaptive M Susp./Incl. Competition Package) - 50474 fits_2014-`Infiniti`Q50 With up to a 24%

With up to a 24% increase in flow over stock

Retains Factory Catalytic Converter

Like all Mishimoto products

our black anodized Banjo Fitting with Bolt has M20 x 1

H&R 15-20 BMW M4 Coupe F82 Sport Spring (Incl. Adaptive M Susp./Incl. Competition Package) - 50474 fits_2014-`Infiniti`Q50 With up to a 24%Sport Spring kits are H&R's number one selling product. Enhance the look of your vehicle with a reduced fender well gap. H&R'sport Springs lower the vehicle's center of gravity and reduce body roll for better handling. The progressive spring rate design provides superb ride quality and comfort. A lower wind resistance signature will make the vehicle more streamlined and improve gas mileage. If you are only looking to improve one part of your vehicle's