QA1 R357-170 Rear Suspension 4-Link Conversion Kit GM F-Body MOD Series

The QA1 R357-170 is a complete rear suspension conversion kit designed to replace factory leaf springs on 1970-1981 GM F-Body vehicles with a modern triangulated 4-link setup and MOD Series coilovers. This comprehensive system transforms your Camaro or Firebird with improved ride quality, enhanced handling performance, and precise stance adjustment capabilities.

Key Features:

• Triangulated 4-link design with tubular trailing arms for superior handling and stability
• MOD Series coilovers with 170 lb/in spring rate and 4-way adjustable valving
• Independent tunability of high and low speed compression and rebound damping
• Height-adjustable coilovers for easy stance customization without link removal
• Accommodates up to 12-inch wide wheels and 335 tires with proper clearance
• Compatible with both standard configurations and mini-tubs
• Optimized ride height improves handling, roll center, and center of gravity
• Typical ride height range: 10.75-12 inches (Camaro) or 13.7-15 inches (Firebird) from axle centerline to fender arch
• Includes spanner wrench for coilover adjustment
• Precision laser-cut and formed mounting brackets for strength and accuracy
• Made in Lakeville, Minnesota

Installation Notes: Welding required for installation. Exhaust modification necessary; will not work with over-the-axle exhaust systems. QA1 subframe connectors strongly recommended. Wheel and tire fitment should be verified on vehicle. This kit is designed to work from twisty back roads to competitive track days, delivering professional-grade suspension performance for serious enthusiasts.