Shock Steel Twin Tube 9in Comp 4 Reb 4

The Shock Steel Twin Tube 9in Comp 4 Reb 4 by QA1 is a premium monotube shock absorber designed for serious suspension upgrades on street rods, classic cars, and high-performance vehicles. This 9-inch unit is engineered for builders and enthusiasts who demand precise damping control and reliable performance across varied driving conditions. Whether you're fine-tuning a custom lowered build or improving handling on a track-ready machine, this shock delivers the adjustability and durability that separates quality suspension work from mediocre installations.

Built with QA1's proven twin-tube monotube design, the Shock Steel features four-way adjustable compression and four-way rebound damping—giving you granular tuning authority over how your suspension responds to bumps, acceleration, and cornering loads. The steel construction ensures long-term reliability in harsh driving environments, while the 9-inch compressed length makes it compatible with many custom fabrication scenarios where space is limited. This level of adjustability allows you to dial in the perfect balance between comfort and control, whether you're cruising show circuits or pushing limits on the street.

Mechanics and fabricators trust QA1 shocks for suspension builds ranging from vintage hot rods to modern performance cars. The compact 19.2-inch overall length and 5.8-pound weight make installation straightforward on custom chassis or OEM suspension conversions. Installation requires proper spring rate matching and suspension geometry verification—work best performed by experienced builders familiar with monotube shock integration and alignment protocols.