H&R 29504-2 Street Performance Coilover Kit Mono-Tube Adjustable Lowering

The H&R 29504-2 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, these coilovers are built around a state-of-the-art mono-tube gas shock design — a construction that offers superior heat dissipation, more consistent damping response, and improved overall performance compared to traditional alternatives.

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 tuned and paired with a progressive rate spring engineered from the ground up to complement the shock's specific valving characteristics. The result is a cohesive, finely calibrated suspension system rather than a collection of mismatched components.

Key Features:

• Mono-tube gas shock construction for superior damping consistency and heat management
• Fully threaded shock body allows precise, stepless ride height adjustment
• Lowering range of approximately 1.0 to 2.5 inches for a meaningful drop without sacrificing daily drivability
• Progressive rate springs tuned in concert with shock valving for an integrated suspension response
• Engineered for street use — suitable for daily drivers through enthusiast builds
• Direct bolt-on replacement design for straightforward installation

The H&R 29504-2 coilover system is an ideal upgrade for drivers who want a lower, sportier stance along with noticeably improved cornering composure and ride quality — without the harshness often associated with lowering springs alone.