QA1 Circle Track Piston, 1.0 Degree - 1.5 Degree Linear - Digressive - 9057-312

QA1 Circle Track Piston, 1.0 Degree - 1.5 Degree Linear - Digressive - 9057-312

These pistons have flat linear compression and digressive rebound with up to 0.056" of preload to generate low-speed control without excessive high-speed forace, helping you maintain grip over surface irregularities. Used on both dirt and asphalt cars, these pistons can generate the force numbers you're looking for to keep the left rear up or keep the front end sealed off. The amount of shim stack preload, shim.

Key Features

• Brand: QA1
• Part Number: 9057-312
• Product Type: Shock Absorber Piston Rod
• 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.