Black powder coated billet aluminum. The translucent (see-through) polycarbonate window comes with a protective layer to help avoid scratching and discoloring and is sealed with an o-ring. Allows you to check the oil level without disassembly and provides a view into the working clutch. Comes complete with a clutch cover gasket. Dimensions approx.: 6.4″ (16.3cm) diameter.
