QA1 ALN1500K-1 Pro-Rear Coilover Conversion Kit Non-Adjustable Aluma Matic 3.25in Axle 12-100/200 Spring

The QA1 ALN1500K-1 Pro-Rear Coilover Conversion Kit is a complete bolt-in rear suspension upgrade designed to convert your vehicle from a traditional shock-and-spring setup to a high-performance coilover system. Engineered and assembled in the USA, this kit pairs QA1's proven Aluma Matic non-adjustable shocks with variable-rate coil springs for an outstanding street and strip ride without the complexity of adjustable valving.

The Aluma Matic shock features a lightweight aluminum body, a precision-machined aluminum piston with PTFE piston band, and a 15mm centerless ground, hard chrome-plated solid piston rod. Every shock is 100% dyno tested and serialized at the factory, and is revalveable and rebuildable by QA1 or authorized service centers for long-term serviceability.

Kit Contents & Specifications:

• 2x Aluma Matic non-adjustable ride-sensitive coilover shocks
• 2x Variable rate coil springs — 12-100/200 lb/in spring rate
• Designed for 3.25-inch axle tube diameter
• USA-made mounting brackets, upper crossmember, mounting tabs, and all necessary hardware
• Three-step sealing system for long-lasting shock performance
• 100% dyno tested and serialized shocks
• Revalveable and rebuildable by QA1 factory or authorized service centers
• ISO 9001 certified quality manufacturing

The 12-100/200 variable rate springs deliver a progressive spring rate, providing a compliant initial response that firms up progressively under load — ideal for vehicles in the 1,050–1,300 lb. rear axle weight range. This kit includes everything needed to complete the rear coilover conversion, making it an excellent choice for the do-it-yourself builder looking for a clean, performance-oriented suspension upgrade.