This is our upper kit and attaches to the OEM
sound tube for easy installation and
significantly increased in-cabin rotor noise
This is our lower kit and offers higher levels of
in-cabin rotor noise and attachment through
This Combines The Upper & Lower Kits And
Offers The Maximum In Cabin Rotor Whine. This
Involves Fitting Both Stage One & Two.
"Install was a breeze, took me less than 30 mins. Everything fit great and sounds even better. Wonderful Job on this kit!!"
Will Rollins at Whipple Superchargers ( left ) after fitting a Foster Stage 2 Sound Kit to Mike's 2016 GT - another happy customer!
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