Level Up Your C5/C6 Corvette Suspension with QA1 Proma Star and MOD Series Pro Adjustable Coilover Systems

For a suspension that responds exactly the way you want, swap out your factory shocks and springs for a QA1 high performance coilover system. Perfect for daily drivers and track day warriors alike, the systems’ customizable compression and rebound, lightweight aluminum construction, and different spring options allow you to build that one-of-a-kind suspension setup that you’ve always wanted. 

Proma Star Double Adjustable Coilover Systems
Get the perfect balance of street-ability and performance from your C5/C6 Corvette with bolt-in QA1 Proma Star Double Adjustable Coilover Systems. They allow you to dial in your preferences for ride quality and handling with independently adjustable compression and rebound valving. This makes them the ideal choice for owners that drive their cars on the road yet also want to rack up laps and carve corners at the track. 

QA1 Proma Star Double Adjustable Coilover Systems are available with multiple spring rates. Medium-duty springs offer a great ride for street-driven Vettes. Firm springs are geared toward track-oriented cars, significantly reducing body roll under hard cornering and providing a more planted feel around the road course. Of course, these systems also adjust your car’s ride height to lower the center of gravity and get rid of dreaded fender gap, that unwanted amount of dead space between the bottom of the fenders and tops of the tires. Corvettes with OEM base suspensions are adjustable between 1.5-2.5 inches of drop; ZO6 models will see a reduction of 1-2 inches.

The coilover systems feature unique upper and lower mounts that allow them to bolt into the factory mounting locations with basic hand tools. Even better, QA1 designed it so the rear coilovers don’t even need a toe link relocation kit. 

MOD Series Pro Adjustable Coilover Systems
With a QA1 MOD Series Pro Adjustable Coilover System on your Corvette, you will no longer be limited to just tuning adjustments. No siree, these industry-first systems allow you to completely re-valve each shock—in just a few minutes time and without having to remove them from the car! 

The key to this awesomeness is QA1’s QuickTune Technology, which consist of dry modular valve packs that are designed to be easily swapped out. That means no mess, no contamination, no air intrusion, and no downtime waiting on someone else to re-valve your shocks. Moreover, the unique double-adjustable design allows for fully independent control over the compression and rebound characteristics for an unprecedented level of tunability. The nitrogen-charged canister can be mounted piggyback on the shock bodies or in a remote location to ease installation in tight areas. Other features include:

• Low-speed valving adjusts ride quality and weight transfer on corner entries and exits
• High-speed valving adjustments protect shocks when hitting potholes, curbs, and during other impacts
• Indexable base eyelet provides multiple mounting positions for easy tuning knob access and more mounting flexibility for the best shock and canister placement
• Hard anodized aluminum bodies
• Large solid piston with blow-off valve for improved driver feel and control
• Wider range of adjustments than comparable shocks
• Easy-to-use spring adjuster nut and tool
• Superior thermal performance due to oil being in constant contact with outer body
• 100% dyno-tested and serialized
• Thrust bearings included
• Medium compression rebound valve packs included; soft or firm valve packs available separately

For a more in-depth review of the features and benefits of the Proma Star and MOD Series Pro Adjustable Coilover Systems, along with some helpful installation tips, check out this how-to video from QA1.