H&R 51661 Street Performance Coilover Kit

The H&R 51661 Street Performance Coilovers deliver a precisely engineered suspension upgrade for drivers who refuse to compromise between daily comfort and spirited handling. Built around a state-of-the-art monotube gas shock design, these coilovers offer a significant performance advantage over traditional twin-tube shock absorbers, providing more consistent damping response and improved heat dissipation.

At the core of the system, each shock is custom valved to work in direct harmony with a precision-engineered progressive rate spring. This matched pairing creates a finely tuned suspension system where the spring rate and shock valving complement each other—resulting in a balanced, cohesive feel that bolt-on shocks and springs simply cannot replicate.

Key Features:

• Fully threaded shock body allows adjustable vehicle height, letting you dial in your preferred stance and lower the vehicle's center of gravity for improved performance and control
• Approximate front lowering range: 1.2" – 2.5"
• Approximate rear lowering range: 1.0" – 2.3"
• Progressive rate springs provide a compliant ride over everyday road imperfections while firming up under hard cornering and braking
• Monotube gas shock construction delivers precise, consistent damping response superior to conventional twin-tube designs
• Vehicle-specific tuning ensures optimal suspension geometry and handling balance out of the box
• Suitable for daily drivers and performance enthusiasts alike

H&R has been the originator of the true street coilover system and continues to lead the segment with vehicle-specific engineering across an extensive range of applications. Each component is designed to enhance handling potential and ride comfort while maintaining proper suspension geometry.