H&R 50418-1 Street Performance Coilover Kit Mono-Tube Adjustable Lowering

The H&R 50418-1 Street Performance Coilover Kit is engineered specifically for street use, delivering an exceptional balance of ride comfort and handling performance. Unlike conventional twin-tube shock absorbers, these coilovers utilize a state-of-the-art mono-tube gas shock construction that provides superior heat dissipation, more consistent damping response, and improved overall performance.

H&R is widely recognized as the originator of the true coilover system designed for street driving, and the 50418-1 continues that legacy. Each shock absorber is individually valved and paired with a progressive rate spring engineered from the ground up to complement the shock's specific valving characteristics — resulting in a fully integrated, finely tuned suspension system rather than a collection of mismatched components.

The fully threaded shock body allows for precise ride height adjustment, giving drivers the flexibility to dial in their preferred lowering stance within the available range. Whether used on a daily commuter or a dedicated performance build, the H&R 50418-1 coilovers deliver a suspension upgrade that is both practical and rewarding.

Key Features:

• Mono-tube gas shock construction for superior damping performance over traditional twin-tube designs
• Fully threaded shock body for precise, adjustable ride height lowering
• Lowering range of approximately 1.0 to 2.5 inches (average)
• Progressive rate springs tuned specifically to match each shock's valving
• Engineered for street use — balances daily-driver comfort with enhanced handling
• Suitable for a wide range of drivers, from commuters to serious enthusiasts

H&R brings decades of suspension engineering expertise to every coilover kit. The 50418-1 is a complete system designed to improve chassis dynamics, reduce body roll, and sharpen steering response — all while maintaining the ride quality expected from a premium street suspension product.