Performance Pro Coil Dual Valve System

The new dual valve QA1 shock offers 576 valving combinations for the toughest requirements.  The dual valve shock includes 24 positions of compression adjustment on one knob, and 24 positions of rebound adjustment on the other knob. Each knob is clearly labeled for ease of adjustment. 

The QA1 Shocks produce one of the best shocks available for your GM Muscle car. These shocks are great for the street, strip, or for handling, this is the shock that offers it all! 

• Easy Bolt-In Installation
• Minimal modifications to be made. Remove the existing shocks and springs and the QA1 Pro Coil system bolts right back in.
• Specially Designed Conical Springs
• This spring is designed so that the lower end sets on the coil-over shock and the upper end sets in the original spring bucket in the frame. This allows for the use of a longer and lighter spring for more stored energy, offering increased weight transfer. Greater durability is also achieved by locating the spring pressure in the frame and not on a single stud.
• Ride Height Adjustable
• Threaded aluminum body allows ride height adjustment.
• 576 way adjustable valving
• The valving adjustment is made with dual knobs on the base of the shock.
• These shocks are re-valve able and rebuild able by an Authorized QA1 Service Center

The QA1 Pro Coil System utilizes the Proma Star® single and double
adjustable shocks. The Pro Coil System includes:

• (2) Proma Star® coil-over shocks
• (2) specially designed conical springs. Spring rate is 550 lb . Designed for front end weight of 2100-2300 LB
• All mounting hardware included