| Exhaust whistle control valve, CUT-OUT.Additional Information Exhaust whistle control valve, CUT-OUT . Splices to your exhaust pipe. The 1" threaded outlet, allows for easy installation of an exhaust whistle, or it can be used by itself as a cut-out. Great for parades. Requires exhaust pipe to be cut to install. Questions and Answers To ask a question about this item please press and fill out the form. Customers Who Bought This Item Also Bought | |