Got a bike with a black engine that just isn’t so black anymore? The S100 Engine Brightener will bring back dull, once-black paint, plastic and rubber to a factory showroom look! Advanced technology lets S100 Engine Brightener bond to a surface as it heats up instead of breaking down like conventional protectents. Just clean the engine and dry, then spray on the temperature stable S100 Engine Brightener. Also included is a handy misting metered spray tube nozzle (an industry exclusive) to get into the cooling fins and crannies without over-applying. The Engine Brightener may be applied to black-painted engine cylinders and cases, cables, rubber hoses, plastic components and virtually any other surface that has lost its gloss and original color. The S100 Engine Brightener works so well that friends will think you replaced the engine! Contains 4.5 oz.