H&R 29278-6 Street Performance Coilover System Mono-Tube Adjustable Lowering Kit

The H&R 29278-6 Street Performance Coilovers are engineered from the ground up for street-driven vehicles that demand both comfort and improved handling. Built around a mono-tube gas shock construction, these coilovers deliver superior damping response compared to traditional twin-tube shock absorbers — resulting in more consistent performance under a wide range of driving conditions.

H&R is widely recognized as the originator of the true coilover system designed specifically for street use. Each unit in the 29278-6 kit pairs a precision-valved mono-tube shock with a progressive-rate coil spring engineered specifically to complement that shock's damping characteristics. The result is a cohesive, finely balanced suspension system rather than a mix of mismatched components.

Key Features:

• Mono-tube gas shock construction for superior heat dissipation and consistent damping performance
• Fully threaded shock body allows precise, tool-adjustable ride height lowering
• Lowering range of approximately 1.0 to 2.5 inches depending on application and setting
• Progressive-rate springs tuned in concert with shock valving for a balanced ride and handling compromise
• Designed for daily drivers through enthusiast-level street use
• Complete bolt-on coilover system — no cutting or welding required

The H&R 29278-6 coilovers represent H&R's commitment to delivering OEM-quality engineering with measurably improved suspension dynamics. Whether used on a daily commuter or a spirited weekend driver, this system provides the adjustability and ride quality expected from one of the most respected names in performance suspension.