H&R 50417-1 Street Performance Coilover Kit with Mono-Tube Gas Shocks

The H&R 50417-1 Street Performance Coilover Kit is a complete, vehicle-engineered suspension upgrade built for drivers who demand a balance of daily comfort and sharp handling performance. Unlike conventional twin-tube shock absorbers, these coilovers are built around a mono-tube gas shock construction that delivers faster damping response, improved heat dissipation, and more consistent performance under real-world driving conditions.

H&R blueprints each kit as a true coilover system from the ground up — not simply a modified shock body. Each unit is hand-assembled in Germany under rigorous ISO 9001 and TÜV certification standards, ensuring precise quality at every stage of production. The shocks are valved specifically to work in harmony with the included progressive-rate springs, which start compliant over everyday road imperfections and progressively firm up as suspension loads increase during spirited driving.

Key Features:

• Mono-tube gas shock construction for superior damping response vs. twin-tube designs
• Fully threaded shock body for adjustable ride height — no need for spring preload spacers
• Progressive-rate springs matched and valved to each specific shock unit
• Front lowering range: 1.25" – 2.0" | Rear lowering range: 1.0" – 1.75"
• TÜV-tested and approved; hand-assembled in Germany to ISO 9001 standards
• Complete front and rear coilover system included
• Compatible with factory strut and shock mounts for straightforward installation

H&R Street Performance Coilovers strike the ideal balance between refined street manners and meaningful handling improvement, making them equally at home on a daily commute or a weekend canyon run. The adjustable height system lets you fine-tune stance and suspension geometry without compromising ride quality.