The R Series Pro Coil System utilizes the R Series adjustable coil over shocks and springs designed specifically for replacing the factory shocks and springs. This combination offers ride height adjustment and 12 position rebound valving adjustment for performance not found in other kits.  The springs are specifically designed to utilize QA1 Motorsports spring seats for ride height adjustment, and to match up with the original spring bucket from the factory. This allows the use of a longer and larger diameter spring, thus providing better performance and ride quality.

The R Series shocks are engineered specifically as front end shocks for drag racing.  These shocks are designed with firm, fixed compression and a wide range of rebound adjustment.
 

The R Series Pro Coil System consists of:

• 2   "R" Series coil-over shocks
• 2   Specifically designed conical springs.  Two progressive spring rates are available, based on small block (250/350 lbs.) or big block (350/450 lbs.).
• All mounting hardware. 

Key Features:

• Engineered for Drag Racing
• 90 - 10 valvings for front shock drag racing applications
• Fixed, firm compression with a wide range of rebound adjustment
• 12 position rebound valving adjuster
• On-the-car valving adjustment
• Lightweight aluminum body
• Greater Overall Travel - Greater inital weight transfer
• Direct Bolt-In Installation 
• Specifically Designed Conical Springs - This spring is designed so that the spring sits 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 and safety is also achieved by locating the spring pressure in the frame and not on a single stud.
• Ride Height Adjustable - Directly threaded aluminum body allows ride height adjustment.  Bright anodizing increases body strength and durability. 
• Bright Anodized Body - Show stopping appearance, easy maintenance and unmatched durability and strength.
• 5/8" Centerless Ground, Hard Chrome Piston Rod - Precision surface, increased durability, eliminates piston rod flex..
• Three Step Sealing System - Aerospace Material.  Exclusively engineered double lip seal with wiper eliminates seal drag and dirt intrusion.
• 100% Dyno Tested and Serialized 
• Spring Mounting Hardware Included - Anodized aluminum spring cap, seat and locking ring for show quality finish and ease of maintenance.
• Shock Mounting Hardware - Bushing material exclusive to QA1 shocks, for both upper and lower mounts.  Mounting hardware: zinc or chrome plated for durability and professional appearance.