QA1 GD455 Proma Star Double Adjustable Front Coil-Over System

The QA1 GD455 Proma Star Double Adjustable Front Coil-Over System converts Corvette C5/C6 leaf spring suspension to a modern coil-over design, delivering improved handling, suspension tunability, and ride quality. This performance-oriented system is engineered specifically for 1997-2013 GM Corvettes and provides the perfect balance of street drivability and track-ready performance.

Key Features:

• Double-adjustable valving with 324 total valving combinations (18 compression settings x 18 rebound settings)
• Independently tune compression and rebound damping to dial in your exact ride quality and handling characteristics
• Adjustable ride height capability: 1-2 inches lowered on base models, 0.5-1.5 inches on Z06 models
• Twin-tube shock design with aluminum body construction for reduced weight
• Bolts directly to factory mounting locations using existing OEM mounting points
• Does not require toe link relocation kit for installation
• Corrosion-resistant hardware and polyurethane bushings included
• Made in the USA, serialized, and dyno-tested
• Eligible for limited lifetime warranty when registered

Available in multiple spring rate options to match your driving style: medium springs (450 lb/in) are ideal for street-focused use, while firm springs (550 lb/in) are optimized for track-oriented driving with reduced body roll. Installation requires basic hand tools and uses factory mounting points without welding or fabrication. Professional alignment is recommended after installation. Note: Vehicles equipped with electronic ride control require Real Time Damping simulators (sold separately).