1980-1982 C3 Rear Monospring Leaf Spring Kit – Fiberglass Composite 340 LB
Reduce Weight, Improve Handling—The Smart Upgrade for Late C3 Corvettes
Take your 1980–1982 Corvette's suspension performance up a notch with this lightweight, high-performance fiberglass rear leaf spring. Engineered with a 340 lb/in spring rate, this composite spring offers sharper handling and reduced unsprung weight—while maintaining excellent ride comfort and street drivability.
Each composite spring is accompanied by all the necessary mounting hardware, including spring bolts, rubber grommets, spring cups, washers, and a special heat shield. This kit provides everything needed for a smooth and secure installation—making it the master upgrade for any Corvette owner looking to enhance both ride quality and performance.
This fiberglass spring is a direct-fit replacement for 1980–1982 models equipped with three M12 mounting bolts (19mm hex head) at the differential. It provides a modern, corrosion-resistant upgrade over the stock steel version—cutting unnecessary weight without sacrificing strength or control.
Features
• Fits all 1980–1982 Corvette C3 models
• 340 lb/in spring rate for firm, performance-oriented handling
• 32 lbs lighter than factory steel rear spring
• Durable fiberglass composite construction resists corrosion
• Improves cornering stability and responsiveness
• Bolts directly to differential using OE-style M12 hardware
• Includes mounting bolts, spring cups, rubber grommets, washers, and heat shield
Tech Notes
• Installs with 3 M12 bolts featuring 19mm hex heads (at differential)
• Always inspect bushings and shackles for wear before reassembly
• Follow factory torque specs for all fasteners
Master Your Suspension
This fiberglass spring delivers the kind of responsive, balanced handling C3 owners crave—while dropping weight and including every piece you need for installation. Ideal for both spirited street use and resto-mod builds.
Also known under these part numbers: (For reference only)