Vette2vette products calls it their c4 no flex kit.
C4 corvette frame stiffener.
With the c4 no flex frame stiffener bar system installed you should be able to open either door or hood with the car jacked up.
Underbody bracing was found to be a simple solution to the frame instability issue.
The x frame is used to stiffen the frame and body.
As a result all c4 convertibles were equipped with an underbody x brace.
85 87 corvette fuel sending unit without pump.
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C4 no flex frame stiffener bar system benefits will work on both the coupe and the convertible there will be noticeably less body twist and roll when driving makes the frame more solid so the front end will not flex when driving on curves.
86 96 c4 no flex frame stiffener bar system vette2vette downside of removing convertible cross brace corvetteforum.
Take the top off before installing the c4 no flex frame stiffener bar system and measure the distance from the windshield header to the halo with the car sitting on the ground now jack the car up on either side and retake the measurement.
86 96 c4 no flex frame stiffener bar system.
Coupes benefit greatly from the addition of underbody bracing.
The good news for 1986 96 c4 owners is there s a direct bolt in aftermarket solution designed by gordon killebrew.
1984 96 corvette chassis reinforcement cc tech c4 corvette chassis reinforcement tips from central lsx fs for cross brace c4 frame corvetteforum chevrolet fs for cross brace c4 frame corvetteforum chevrolet.