H&R 51691-77 Super Sport Lowering Springs for 2015-2023 Ford Mustang RWD

Vehicle Fitment

• 2015-2023 Ford Mustang (EcoBoost, V6, GT; RWD; non-MagneRide)

Features

• H&R Super Sport progressive-rate lowering springs for enhanced performance
• Lowers vehicle for lower center of gravity and improved handling
• Greater drop than standard sport springs for aggressive stance
• Reduces body roll and improves cornering stability
• Improves visual stance with reduced fender gap
• Crafted from high-strength 54SiCr6 spring steel
• Shot-peened and stress-relieved for durability and long life
• Compatible with many OEM and performance dampers or struts

Specifications

• Part Number: 51691-77
• Front Lowering Approx.: ~1.75 inches
• Rear Lowering Approx.: ~1.75 inches
• Material: 54SiCr6 high-tensile spring steel
• Fitment: Rear-wheel-drive Ford Mustang without MagneRide
• Quantity: Set of 4 springs (front and rear)

Included Components

• 2x Front Super Sport lowering springs
• 2x Rear Super Sport lowering springs
• Manufacturer documentation

Product Description

H&R 51691-77 Super Sport Lowering Springs are a high-performance suspension upgrade designed for **2015-2023 Ford Mustang** models equipped with **rear-wheel drive and without MagneRide adaptive damping**. These springs provide an aggressive lowered stance, dropping both the front and rear approximately **1.75 inches**, which helps lower the center of gravity, sharpen handling response, and reduce body roll during spirited driving or everyday use. The progressive spring rate design enhances both performance and ride quality compared with stock springs.

Manufactured in Germany from premium 54SiCr6 spring steel with shot-peened and stress-relieved processing, H&R Super Sport Springs are engineered for durability and consistent performance. This set includes a full complement of four springs for front and rear installation and is compatible with many original or aftermarket shocks and struts. The aggressive stance also gives your Mustang a stand-out look with reduced fender gap, making this a popular upgrade for enthusiasts seeking enhanced road feel and visual appeal.