Join Date: Jul 2018
Location: Metro Atlanta, GA, USA
The louvered OEM guard on the front of the radiator already blocks air flow. If you look at it, it is louvered in the front and solid at the rear so effectively no air is passing through it.
When the front fork is pointing straight, the fender extender does not block any more air than the louvered guard.
Once the fender extender is installed, the louvered guard can probably be removed which likely would help with the cooling. Or, remove the louvered guard and drill a bunch of holes in the back to allow some air flow. If I ran on a lot of gravel roads I would not remove the louvered guard.
Current bike: '18 K1600B
Most recent former bikes: