1963-1977 C2-C3 Rear Monospring Leaf Spring Kit – Fiberglass Composite 355
Fiberglass Composite 355 (Heavy Duty)
Engineered for heavy-duty performance, this 355 lb-rated spring is the stiffest offering in our line of fiberglass composite rear monospring kits. Perfect for track use, high-speed stability, or Corvettes carrying additional weight.
Built on the patented TRW transverse spring design, this fiberglass spring delivers outstanding strength, stability, and ride control under stress. The increased rate provides exceptional body control and flatter cornering in aggressive driving scenarios. Please verify bolt sizing before ordering, as original differential mounting bolts for these years should be 9/16" with a 13/16" hex head.
Features
• Fits all 1963–1977 Corvettes
• 355 lb spring rate – Heavy Duty/High Load
• Composite construction from TRW-patented tech
• Complete install hardware included: bolts, bushings, heat shield
• Direct factory-style installation – check 9/16" bolt size
Dimensions and Weight
• Spring Rate: 355 lbs
• Material: Fiberglass composite
• Hardware kit included
Tech Notes
• Ideal for high-performance builds
• Verify spring bolt specs before installation
Take Action
Demand more from your C2 or C3 suspension? Step up to the 355 lb Heavy Duty fiberglass spring kit for total rear-end control.
Also known under these part numbers: (For reference only)