QA1 ALN2000K-1 Pro Rear Non-Adjustable Coilover Conversion Kit Aluma Matic 12in 130-250 lb/in 3.25in Axle

The QA1 ALN2000K-1 is a bolt-in rear coilover conversion kit built around QA1's Aluma Matic non-adjustable shock technology. Designed for builders who want maximum ride quality and performance without the complexity of valving adjustments, this kit delivers QA1's proven factory valving straight out of the box.

At the heart of the kit are ALN5855P Aluma Matic non-adjustable coilover shocks featuring a lightweight, clear-anodized aluminum body threaded for coil-over use. The shocks are paired with 12-inch variable-rate silver powdercoated springs rated at 130–250 lbs/in, offering a progressive spring curve that transitions from a compliant street ride to firm performance support under load.

Kit Includes:

• Non-adjustable Aluma Matic ALN5855P coilover shocks (clear anodized aluminum body)
• 12-inch variable-rate coilover springs — 130/250 lb/in (silver powdercoated)
• Specially designed USA-made mounting brackets
• 1.625 in. O.D. x 0.095 in. wall x 40 in. long weld-in tube
• All necessary hardware for installation
• Designed for 3.25-inch diameter axle tubes

Shock Features:

• Lightweight aluminum body — non-adjustable, coilover-specific design
• Precision machined aluminum piston with PTFE piston band
• 5/8 in. centerless ground, hard chrome plated solid piston rod
• Three-step sealing system for long-term leak resistance
• Double-lip seal with secondary wiper seal to block road contamination
• 100% dyno tested and individually serialized
• Revalveable and rebuildable by QA1 factory or authorized service centers
• Proudly manufactured in Lakeville, MN, USA

The kit is a complete solution — no sourcing separate components or fabricating brackets. Whether building a street rod, restomod, or custom chassis, the QA1 ALN2000K-1 provides a reliable, high-quality rear coilover conversion with the confidence of American-made craftsmanship and QA1's factory-backed support.