H&R 31054-1 Sport Cup Kit - Lowering Spring & Shock System

The H&R 31054-1 Sport Cup Kit is a precision-engineered spring and shock suspension system built for performance-minded drivers who demand aggressive lowering without sacrificing street drivability. The result of over 25 years of suspension engineering expertise, this kit goes far beyond a generic matched spring-and-shock pairing — every component is purpose-designed and tuned to work together as a cohesive unit.

Unlike mixing off-the-shelf springs with aftermarket shocks, the H&R Sport Cup Kit features application-specific progressive-rate springs matched to custom-valved performance shocks engineered for the same chassis. This ensures correct suspension travel, optimal damping, and a consistent ride across varying road conditions — eliminating the guesswork of mismatched components.

Key Features:

• Delivers more than 2.0 inches of lowering for an aggressive, performance stance
• Application-specific progressive spring rates tuned to the specific chassis for compliance over small bumps with increased stiffness under hard cornering
• Custom-valved performance shocks matched precisely to the included springs
• Lowers center of gravity and roll center for significantly improved handling and reduced body roll
• 100% German-made in H&R's ISO-certified manufacturing facility
• Outperforms separate off-the-shelf spring and shock combinations in both handling and ride comfort
• A more aggressive lowering solution compared to the H&R Touring Cup Kit

The H&R Sport Cup Kit is the ideal choice for enthusiasts who want a street-engineered performance suspension with a super-low, track-inspired look — all in one ready-to-install package.