It s a frame stiffener bar system that puts the framerails in compression not allowing the framerails to flex under load.
C4 corvette frame stiffener.
The x frame is used to stiffen the frame and body.
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.
88 corvette fuel sending unit without pump.
84 corvette fuel sending unit without pump.
Vette2vette products calls it their c4 no flex kit.
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.
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.
Underbody bracing was found to be a simple solution to the frame instability issue.
85 87 corvette fuel sending unit without pump.
Coupes benefit greatly from the addition of underbody bracing.
86 96 c4 no flex frame stiffener bar system vette2vette downside of removing convertible cross brace corvetteforum.
The good news for 1986 96 c4 owners is there s a direct bolt in aftermarket solution designed by gordon killebrew.
As a result all c4 convertibles were equipped with an underbody x brace.