Upgrade your chassis with valve-gear or jack-shaft drives and add extra details to your ready-to-run models. 

The chassis conversion kits require good hand-eye coordination, as the parts are incredibly small and free movement must be ensured for the converted chassis to work. Body upgrade parts are supplied unpainted or painted, depending on whether you want to apply a quick or more detailed improvement.

Any attempts to modify chassis with these kits will likely invalidate the chassis manufacturer's warranty. Please consult documentation supplied with chassis for further detailers.