The upgraded turbo guard is available for 3" or 4" turbo covers.  

-3" fits our upgraded 20G turbo
-4" fits our upgraded 25G turbo

DISCLAIMER: It should be noted that Turbo-Guard does not claim to be a substitute for a cone filter, but rather it is designed to fit in places where others cannot. This product offers a quick and simple way to add protection when other options are not available. The one-piece design allows for easy application when protection is needed and easy removal when maximum performance is desired.