H&R 51812 Street Performance Coilover Suspension Kit

The H&R 51812 Street Performance Coilovers are engineered specifically for street use, combining exceptional ride comfort with improved handling characteristics. Built around a mono-tube gas shock construction, these coilovers deliver superior damping performance compared to traditional twin-tube shock absorbers — resulting in better heat dissipation, more consistent response, and longer service life.

H&R pioneered the true coilover system for street applications and continues to set the standard in the market. Each shock absorber is precisely tuned to work in harmony with a progressive rate coil spring engineered from the ground up to match the shock's valving. This integrated approach creates a cohesive, finely calibrated suspension system rather than a collection of mismatched components.

Key Features:

• Mono-tube gas shock construction — superior to traditional twin-tube designs for consistent, fade-free performance
• Fully threaded shock body — allows precise, tool-adjustable ride height setting
• Lowering range of approximately 1.0 to 2.5 inches — dial in your preferred stance without sacrificing driveability
• Progressive rate springs — tuned specifically to match shock valving for optimal comfort and handling balance
• Suitable for daily drivers and performance enthusiasts alike
• Direct-fit replacement coilover system — no cutting or fabrication required

H&R's Street Performance Coilovers (PN: 51812) are an ideal upgrade for drivers seeking a meaningful improvement in handling dynamics and a lower, more aggressive stance while maintaining real-world ride comfort for everyday driving conditions.