A heat-dispersing, internal exhaust pipe coating that shields against pipe bluing on properly tuned engines. Protects pipes from discoloration…as long as the carburetor is not jetted too lean or your bikes pipes have crazy sharp bends coming from the heads. Best used on new pipes to help maintain that shiny showroom look, if you're into that sort of thing. YMMV. 16 fl. oz. (1 pint).