QA1 ALN12130K Pro Rear Weld-In Coilover Conversion Kit Non-Adjustable 130 lb/in Spring 3.00" Axle

The QA1 ALN12130K Pro Rear Weld-In Coilover Kit is a complete rear suspension conversion system built around QA1's Aluma Matic non-adjustable aluminum coilover shock. Designed for 3.00-inch diameter axle tubes, this kit delivers a significant suspension upgrade for classic street rods, muscle cars, and custom builds without requiring complex fabrication. Everything needed for installation is included in the box.

Key Features:

• Non-Adjustable Aluma Matic Shocks: Lightweight aluminum body threaded for coilover performance — ideal for builders who want proven, consistent damping without manual adjustability
• 130 lb/in Spring Rate: Includes 12-inch high-travel linear rate coilover springs (QA1 12HT130) suited for vehicles in the 1,301–1,550 lb. rear axle weight range
• Weld-In Installation: Kit includes a 1.625 in. O.D. x 0.095 in. wall x 40.00 in. long weld-in upper shock mount tube, plus all axle mount brackets and necessary hardware
• 3.00" Axle Tube Fitment: Specifically designed for use with 3.00-inch diameter rear axle tubes
• 100% Dyno Tested & Serialized: Every shock is individually dyno tested and serialized at the QA1 factory for quality assurance
• Revalveable & Rebuildable: Shocks can be revalved and rebuilt by QA1 or an authorized QA1 service center, protecting your long-term investment
• Three-Step Sealing System: Keeps internal shock components protected from contaminants for long-lasting, smooth performance
• Made in the USA: Manufactured by QA1 in Lakeville, Minnesota

Kit Includes:

• 2x Aluma Matic non-adjustable coilover shocks
• 2x 12-inch 130 lb/in linear rate coilover springs
• Weld-in upper shock mount tube (1.625" O.D. x 0.095" wall x 40")
• Axle mount brackets and all necessary mounting hardware

Note: Welding is required for installation. Use of a QA1 spanner wrench (T121W) is recommended for spring collar adjustment.