H&R 29310-1 Street Performance Coilover Kit - Mono-Tube Height Adjustable Suspension

The H&R 29310-1 Street Performance Coilover Kit delivers a complete, vehicle-specific suspension upgrade engineered to balance everyday driving comfort with genuine performance handling. Unlike conventional twin-tube shock absorbers, these coilovers are built around an innovative mono-tube gas shock construction that provides more precise damping response, better heat dissipation, and improved overall consistency compared to standard OEM or entry-level aftermarket units.

H&R engineers fine-tune each coilover shock with a progressive-rate spring matched specifically to the shock's valving characteristics. This pairing creates a cohesive, finely tuned suspension system rather than a mix-and-match approach—resulting in a ride that remains compliant over rough pavement while firming up predictably under hard cornering or braking.

Key Features:

• Mono-tube gas shock construction — superior to traditional twin-tube designs for consistent damping performance
• Fully threaded shock body — true coilover height adjustment via threaded body, not an imitation sleeve-over design
• Progressive-rate springs — vehicle-specific spring rates tuned to complement shock valving front and rear
• Adjustable ride height — front lowering range of approximately 1.3"–2.3"; rear lowering range of approximately 1.2"–2.0"
• Easy-to-adjust spring perches — ride height can be dialed in to accommodate seasonal conditions or personal preference
• Lowers center of gravity — reduces body roll during cornering for a more balanced, planted feel
• 100% German-engineered and manufactured — built to H&R's exacting quality standards
• Suits daily drivers through enthusiast builds

H&R pioneered the street coilover concept and continues to refine the formula with complete, matched systems. The 29310-1 is a direct-fit, complete coilover kit that replaces the factory struts and springs with a fully integrated performance suspension solution.