H&R 31004-1 Sport Cup Kit - Matched Spring & Shock Suspension Lowering Kit

The H&R 31004-1 Sport Cup Kit is a precisely engineered, application-specific spring and shock absorber package designed to deliver a winning combination of aggressive lowering, improved handling, and street-friendly ride quality. By pairing H&R's renowned progressive-rate sport springs with purpose-matched shock absorbers, this kit eliminates the guesswork of mixing off-the-shelf components and delivers a cohesive, optimized suspension system straight out of the box.

Built on decades of H&R suspension engineering expertise, the Sport Cup Kit steps up from the Touring Cup Kit with additional lowering and a sportier tuned damping profile — making it the ideal choice for the performance enthusiast who wants a super-low stance without sacrificing daily drivability. The progressive spring rate design ensures compliance over small imperfections while delivering firm, confident control during spirited driving.

Key Features:

• Approximately 2.0" front lowering and 1.4" rear lowering for an aggressive, performance-oriented stance
• Progressive-rate sport springs matched to application-specific shock absorbers for optimized damping and spring rate harmony
• High-strength spring steel construction with corrosion-resistant powder coating for long-term durability
• Engineered and manufactured in Germany by H&R Spezialfedern GmbH & Co. KG
• Shock absorbers sourced from OEM-experienced manufacturers with proven motorsport pedigree
• Outperforms mismatched spring-and-shock combinations in both handling precision and ride comfort
• Ready-to-install complete kit — no component sourcing or tuning required

Note: On vehicles equipped with factory ride height adjustment shims, actual lowering may vary. Standard rubber spring pads on the rear axle should be exchanged as needed to achieve specified ride height. Vehicles equipped with factory sport suspensions such as Mercedes-Benz Sport-line may experience less lowering than stated values.