1963-1977 C2-C3 Rear Monospring Leaf Spring Kit – Fiberglass Composite 340
Upgrade Your Suspension with Composite Performance
Transform your classic Corvette's ride quality with our 340 lb-rated Rear Monospring Leaf Spring Kit, engineered for 1963–1977 C2 and C3 models. As the original patent holder of the TRW-designed composite transverse leaf spring, Muskegon Brake delivers modern handling benefits to your vintage build—without sacrificing originality. Whether you're restoring, upgrading, or simply refining your ride, this kit offers a smoother, more responsive suspension feel.
Built on Proven Innovation
This fiberglass composite spring is considered the gold standard for Corvette suspension upgrades. It combines state-of-the-art composite technology with a proven fitment for 1963–1982 Corvettes. Although this 340 lb version is designed specifically for 1963–1977 models, the broader engineering heritage ensures precise handling and excellent ride comfort across the entire era.
Please verify bolt size before ordering: 1963–1977 Corvettes typically use 9/16" bolts with 13/16" hex heads to mount the spring to the differential cover.
Features
• Fits all 1963–1977 Corvette C2 and C3 models
• 340 lb-rated fiberglass composite transverse rear spring
• Manufactured by Muskegon Brake, original TRW patent holder
• State-of-the-art composite design enhances handling and comfort
• Superior ride quality and longevity compared to steel springs
• Designed as the ultimate suspension upgrade for classic Corvettes
• Includes complete installation hardware and heat shield
• No core charge – ready to install
Dimensions and Weight
• Spring Rating: 340 lb
• Bolt Fitment: 9/16" bolts, 13/16" hex head
• Weight: Lightweight fiberglass composite material
Tech Notes
• Compatible with C2 and C3 Corvettes using rear transverse springs
• Includes spring bolts, nuts, cotter pins, rubber grommets, washers, and cups
• Special heat shield included to protect critical components
Take Action
Refresh your Corvette’s ride with modern suspension performance in a vintage shell. This composite Rear Monospring Leaf Spring Kit is the ultimate in strength, precision, and long-term reliability. Order now and elevate your Corvette’s suspension game.
Also known under these part numbers: (For reference only)