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1976 Corvette C4 Rear Bumper - TruFlex Fiberglass - 6.25 Emblem Indent

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Brand Logo American Custom Industries - ACI
Item ID: 618-941
Availability: Ships Directly From Supplier
   Pending Manufacturer Availability
Fits Years:
  • 1976
$505.99
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GM LogoGeneral Motors Licensed Product.
  • Description

1976 C4 Rear Bumper - TruFlex Fiberglass - 6.25" Emblem Indent

Restore the distinct rear profile of your early 1976 Corvette with this TruFlex™ fiberglass rear bumper—a direct replacement modeled after GM’s original 1-piece design. Constructed from hand-laid flexible fiberglass using ACI’s proprietary TruFlex™ formulation, this bumper delivers OEM-style accuracy with enhanced durability and easier repairability compared to factory urethane.

This version replicates the early 1976 design, featuring the correct 6.25-inch wide rear emblem indentation found only on early production models. Shipped in a smooth white gel coat, it’s ready for sanding, priming, and final paint matching to your Corvette’s color.

Features
• Fits early 1976 C3 Corvettes only
• Molded with 6.25" emblem indentation used in early '76 production
• Manufactured in TruFlex™ hand-laid fiberglass for added strength and flexibility
• Superior alternative to urethane—easier to prep and repair
• One-piece design replicates factory fit and contour
• Shipped in white gel coat ready for prep and paint
Made in the USA

Dimensions and Weight
• Width: Factory-matching rear deck contour
• Material: TruFlex™ hand-laid fiberglass
• Finish: White gel coat
• Configuration: 1-piece bumper assembly

UNDER THE STRAW HAT – Restorer’s Insight
Chevrolet switched emblem indent widths mid-1976, so restoration accuracy depends on VIN production sequence. Early ‘76 Corvettes used a 6.25-inch indent, while later cars adopted a wider style. This piece matches early factory detail, making it a critical fit for accurate restorations.

UNDER THE STRAW HAT – Restorer’s Insight
Chevrolet switched emblem indent widths mid-1976, so restoration accuracy depends on VIN production sequence. Early ‘76 Corvettes used a 6.25-inch indent, while later cars adopted a wider style. This piece matches early factory detail, making it a critical fit for accurate restorations.

Original GM panels were press molded—a production process using high pressure and matched dies to produce thin, consistent fiberglass with smooth inner and outer surfaces. These parts were fast to manufacture but prone to stress cracking and distortion with age.
In contrast, hand-laid fiberglass is manually built up with resin-saturated mat, resulting in thicker, more durable panels that are stronger and easier to modify or reinforce. While slightly heavier and with a rougher backside, hand-laid panels are ideal for restorers seeking long-term structural integrity and excellent fitment—especially when factory press-molded panels are no longer available.

Learn more from the following Mid America Motorworks Knowledge Library article:

Corvette Body Components from Fiberglass to Resin Transfer Molding

 




Also known under these part numbers: (For reference only)

  • 143124
  • 686420287483
  • ECF030B
Prop 65