This aluminum reservoir replaces the plastic ones that come in a master cylinder kit. This is a billet reservoir that threads into your black Wilwood master cylinder. No more hose clamp or leaky plastic reservoir. Buy the reservoir one time and use it on every master cylinder you buy in the future. It’s very sturdy and comes in gray anodize aluminum. This reservoir sits a little taller than the plastic ones. That works out perfect as the cap now clears most knee guards.
Gray Anodized Reservoir