H&R 54755-4 Street Performance Coilover Kit - Monotube, Height-Adjustable

The H&R 54755-4 Street Performance Coilover Kit delivers a premium suspension upgrade engineered to bring true racing-derived technology to everyday street driving. Built around a monotube gas shock construction, these coilovers outperform traditional twin-tube shock absorbers by providing superior damping response, improved heat dissipation, and more consistent performance mile after mile.

Key Features:

• Monotube shock design for superior damping performance versus conventional twin-tube absorbers
• Fully threaded shock body allows precise, adjustable ride height with easy-to-turn spring perches
• Custom-valved dampers matched to progressive-rate springs for a finely tuned, cohesive suspension system
• Adjustable lowering range — approximately 1.2"–2.5" front and 1.0"–2.8" rear
• Balanced weight distribution — threaded height adjustment lowers the center of gravity for improved handling and control
• Hand-assembled in Germany under strict ISO 9001 and TÜV certification standards
• Suitable for daily drivers through serious performance enthusiasts

H&R engineers each shock to work in concert with a precision progressive-rate spring, resulting in a suspension system that delivers both sharp handling response and real-world ride comfort — not a compromise between the two. The threaded spring perch can be moved up or down independently to fine-tune ride height, optimizing stance and vehicle dynamics without sacrificing drivability.

H&R (founded by Werner Heine and Heinz Remmen) pioneered the true coilover system for street use and continues to set the standard with German-engineered, TÜV-certified quality. The Street Performance series is the ideal solution for drivers who demand improved chassis dynamics without giving up the comfort needed for daily use.