QA1 DM501-12300 HD Pro Rear Coilover Conversion System 3.0 Axle MOD Series 300lb

The QA1 DM501-12300 HD Pro Rear Coilover Conversion System is a complete rear suspension upgrade designed for serious performance applications. Built around QA1's MOD Series adjustable coilover technology, this kit delivers precise, tunable damping and spring rates to dramatically improve handling, ride quality, and rear suspension geometry over factory leaf spring or solid axle setups.

This system is engineered for use with a 3.0-inch axle and includes everything needed for a clean, weld-in coilover conversion. The 300 lb/in spring rate provides a firm, performance-oriented ride suited to street and track driving, while the MOD Series shock bodies allow independent adjustment of compression and rebound damping to dial in the exact feel you want.

Kit Includes:

• Two (2) MOD Series adjustable coilover shocks
• Two (2) 300 lb/in coilover springs
• One (1) 40-inch weld-in mounting tube
• All necessary mounting hardware

Key Features:

• MOD Series adjustable coilover shocks for precise, on-the-fly damping tuning
• 300 lb/in spring rate for performance handling and reduced body roll
• 3.0-inch axle compatibility for popular muscle car and hot rod rear axle housings
• 40-inch weld-in tube for a clean, secure installation with professional results
• Complete hardware kit included for straightforward installation
• Manufactured by QA1 Precision Products — a trusted name in performance suspension engineering

The QA1 DM501-12300 is an ideal solution for builders looking to eliminate leaf springs and convert to a modern coilover rear suspension system. Whether you're building a drag car, street machine, or autocross vehicle, this complete conversion kit delivers the adjustability and durability to match your goals.