H&R 29458-1 Street Performance Coilover Kit Mono-Tube Adjustable Lowering

The H&R 29458-1 Street Performance Coilover Kit is engineered specifically for street use, delivering a refined balance of ride comfort and handling performance. Unlike conventional twin-tube shock absorbers, this coilover system is built around a state-of-the-art mono-tube gas shock construction that provides superior damping consistency, better heat dissipation, and more precise response under a wide range of driving conditions.

H&R is widely recognized as the originator of the true coilover system for street applications, and this kit reflects decades of suspension engineering expertise. Each shock absorber is individually valved and paired with a progressive rate spring designed from the ground up to complement the shock's specific valving characteristics — the result is a cohesive, finely tuned suspension system rather than a collection of mismatched components.

Key Features:

• Mono-tube gas shock construction for superior performance over traditional twin-tube designs
• Fully threaded shock body allows precise, tool-adjustable ride height setting
• Adjustable lowering range of approximately 1.0 to 2.5 inches
• Progressive rate springs engineered to match shock valving for a balanced ride and handling profile
• Suitable for daily drivers and performance-oriented street use
• Uncompromised ride comfort without sacrificing cornering performance

Whether you are looking to improve the stance and handling of your daily commuter or dial in a more performance-oriented setup, the H&R 29458-1 Street Performance Coilovers deliver the engineering quality and adjustability that H&R is known for worldwide.