H&R 51669 Street Performance Coilover Kit

The H&R 51669 Street Performance Coilover Kit delivers a precisely engineered suspension upgrade for drivers who demand both improved handling and everyday ride comfort. H&R is the originator of the true coil over system for the street and has led the market with decades of application-specific development and suspension engineering expertise.

Unlike conventional twin-tube shock absorbers, these coilovers feature a mono-tube gas shock construction that provides superior damping control and more consistent performance across a wide range of driving conditions. Mono-tube shocks are also lighter than twin-tube designs, helping to reduce unsprung weight for more responsive handling. The true threaded shock body — not a threaded sleeve over an insert — allows for better heat dissipation and long-term durability.

Each shock is custom-valved to work in harmony with a precision-engineered progressive rate spring, creating a finely balanced suspension system that stays compliant over rough surfaces while firming up when cornering or braking hard demands it. The fully threaded shock body enables adjustable ride height, helping to lower the vehicle's center of gravity and improve overall stability.

Key Features:

• Mono-tube gas shock construction for superior damping and reduced unsprung weight
• True threaded shock body for better heat dissipation versus insert-style designs
• Progressive rate springs custom-matched to each shock's valving for a balanced ride
• Fully adjustable ride height — approximately 1.2" to 2.5" front lowering, 1.0" to 2.2" rear lowering
• Easy-to-adjust spring seats for convenient ride height changes
• Lowers center of gravity for improved cornering performance and control
• Vehicle-specific tuning for optimal fit and performance
• Suitable for daily drivers through serious performance enthusiasts

The H&R 51669 Street Performance Coilover Kit is a complete, matched system designed for drivers who want an aggressive stance and upgraded handling without sacrificing day-to-day ride quality.