Rick’s porthole reveals the workings inside the primary drive. A glass pane offers a view on the clutch’s mechanical components.
The derby cover is cut out of an impact-resistant Makrolon disk. The housing, made of CNC-milled aluminum, is screwed from all sides. By using one gasket and two O-rings, the porthole is absolutely leak proof.
The socket is available in a polished, black-gloss, black-wrinkle, or black-matte version to match the engine surface.
EVO / Twin Cam Derby Cover
