QA1 Shock Proma Rear C-O D-adj 12.50 18.75 Eye-p Eye-b, Rear C-O Conversion - DD603

QA1 Shock Proma Rear C-O D-adj 12.50 18.75 Eye-p Eye-b, Rear C-O Conversion - DD603

QA1's double adjustable shocks have 324 valving options, with 18 positions of compression adjustment and 18 positions of rebound adjustment. There are no jumps when adjusting between any two clicks. Each adjustment has been carefully defined to provide the ideal horse curve to maximize performance. Independent Compression and Rebound Adjustment, Coil-Over, Lightweight Aluminum, Ride Height Adjustable, Spring.

Key Features

• Brand: QA1
• Part Number: DD603
• Product Type: Shock Absorber
• Fitment: Universal
• Built for improved handling, stance, suspension control, and reliable performance
• Designed for serious street, performance, drag, pro-touring, and custom builds

Fitment & Installation Notes

Universal Professional installation is recommended when suspension geometry, alignment, ride height, welding, or fabrication may be involved.

Emissions & Compliance

Catalog compliance data lists CARB:N and/or EPA:N. Confirm state and local requirements before street use.

Why Buy This Part

Choose QA1 for proven performance parts engineered for enthusiasts who care about fitment, quality, and real-world results.