QA1 ALN12130K-1 Pro-Rear Non-Adjustable Coilover Conversion Kit 3.25in Axle 130lb/in Spring

The QA1 ALN12130K-1 Aluma Matic Pro-Rear Coilover Conversion Kit delivers a complete rear coilover solution engineered for 3.25-inch diameter axle tubes. This kit provides everything needed to upgrade a leaf-spring or factory rear suspension to a true coilover setup, combining QA1's proven Aluma Matic non-adjustable shock technology with high-travel linear-rate springs and all necessary mounting hardware.

At the heart of the kit are QA1's Aluma Matic ALN5855P non-adjustable shocks, featuring a lightweight threaded aluminum body designed for precise coilover performance. The shocks deliver a tuned, ride-sensitive valving that provides an excellent balance of comfort and handling without requiring manual damping adjustments — ideal for street rods and performance builds where consistent, predictable performance is the priority.

Kit Contents:

• 2x QA1 Aluma Matic ALN5855P non-adjustable coilover shocks — clear anodized aluminum bodies
• 2x 12-inch linear-rate 12HT130 coilover springs — 130 lb/in rate, silver powdercoated
• 1x Weld-in tube: 1.625 in. O.D. x 0.095 in. wall x 40.0 in. long
• All necessary mounting hardware

Key Features:

• Non-adjustable Aluma Matic shocks — ride-sensitive valving factory set for street performance
• Lightweight threaded aluminum shock body — reduces unsprung weight while maintaining durability
• Three-step sealing system — keeps shocks running smoothly and contaminant-free
• Revalveable and rebuildable — serviceable by QA1 factory or authorized service centers
• 100% dyno tested and serialized — every shock verified before leaving the factory
• Made in the USA — manufactured to QA1's ISO 9001-certified quality standards
• 130 lb/in linear spring rate — engineered for vehicles in the 1,301–1,550 lb. rear weight range
• Designed for 3.25-inch diameter axle tubes

QA1's Aluma Matic series is the ideal choice for builders who want proven coilover performance without the complexity of adjustable damping. The complete kit simplifies the conversion process with all hardware included, reducing installation time and ensuring all components are properly matched from the factory.