H&R 36258-1 Street Performance SS Coilover Kit with Adjustable Damping

The H&R 36258-1 Street Performance SS Coilover Kit delivers a premium combination of adjustable ride height and tunable shock damping in a corrosion-resistant stainless steel package. Featuring polished stainless steel mono-tube shock bodies, this coilover system minimizes unsprung weight while providing superior corrosion protection and high heat dissipation — a significant upgrade over standard steel shock bodies.

Shock damping is fully adjustable, allowing drivers to fine-tune the suspension for spirited performance driving or everyday comfort. Height adjustment is achieved through fully threaded shock bodies paired with easy-to-use spring seats and locking rings, delivering a precise, repeatable lowering range of approximately 1.4–2.6 inches (35.5–66 mm) in the front and 1.2–2.2 inches (30.4–55.8 mm) in the rear.

The shocks in this kit are manufactured in partnership with KONI, a world-renowned shock absorber specialist, and are matched with progressive-rate coil springs crafted from shot-peened 54SiCr6 spring steel for long-term durability and consistent performance. H&R's ride development engineers have precisely plotted the shock damping curves for each application, ensuring optimized handling without sacrificing daily-driver comfort.

Key Features:

• Polished stainless steel mono-tube shock bodies — corrosion resistant, lightweight, and high heat dissipating
• Adjustable shock damping — personalize the suspension tune for performance or comfort
• Fully threaded shock bodies with easy-adjust spring seats and locking rings for precise ride height control
• Lowering range: 1.4–2.6 in. (35.5–66 mm) front / 1.2–2.2 in. (30.4–55.8 mm) rear
• Progressive-rate 54SiCr6 shot-peened spring steel coil springs front and rear
• KONI-manufactured shocks with application-specific damping curves
• Hand-assembled in Germany to ISO 9001 and German TÜV standards
• 2-year warranty to the original purchaser

Professional installation is recommended. A suspension alignment will be required after installation. The H&R 36258-1 is an ideal choice for enthusiasts seeking a high-quality coilover system that balances a lowered, aggressive stance with genuine daily-driver usability.