Evotech Front Spindle Bobbins - Ducati Hypermotard 939 (2016-2018) STL_61 The unique design allows air

The unique design allows air flow though the radiator and engine guards while still maintaining a high level of protection

The real question is

such as a stone

The Ducati Multistrada radiator

Protruding from either side of the front wheel of your Ducati Monster S4RS

Evotech Front Spindle Bobbins - Ducati Hypermotard 939 (2016-2018) STL_61 The unique design allows airFeatures of EP Front Spindle Bobbins for the Ducati Hypermotard 939 Designed and manufactured to precisely fit your Ducati Injection moulded nylon bobbin heads sitting either side of the front wheel Supported by an aluminium inner Installed through the spindle by a stainless steel rolled thread rod Replacement bobbin heads are available for purchase What is Spindle Bobbin Crash Protection? Protecting the front wheel spindle retainers, brake calipers