Black anodized CNC machined billet aluminum. Direct replacement for the stock derby cover. Constructed from light weight billet aluminum and equipped with replaceable 'slippery' Delrin slider on the outer most edge so you won't destroy your derby cover on the tarmac when you're digging deep in the corners. Includes stainless installation hardware. Used with the 'narrow profile' outer primary covers as stock on all 16-up Touring and Trikes. Also fits 07-15 Touring, Trikes that are custom equipped with the OEM 25700385 or 25700438 'narrow profile' outer primary cover. Note: These derby covers are a bit larger in diameter than the regular derby cover of earlier models and will therefore not fit regular outer primary covers of 07-15 models Note: Replacement Delrin slider MCS 985773