+1 on the added air vents. Vented lowers didn't exist when I bought mine and I took them off in the summer due to heat issues (and just lived with wet legs when it rained). The vents in the link work and are inexpensive.

 

I rode last summer in 100* to 109* with vented lowers on. It was just plain old HOT period. A lot of the heat comes from the road surface. Removing the lower didn't seem to make much difference the year I did remove them.

 

+2. Only my 09 RG, the aftermarket vents helped with the dead hot air behind the lower. Run the lowers yr round, no issues so far. Now installing the vents, "measure twice, cut once".... hard to slice through a $700 pair of new painted lowers and mess up.

 

vented, one of first things I added.next year added the quick detach bolts.I would recommend both.I found lowers online new for just over 500 and detach for 70 back in 07.
Would do it again. unless I moved to arizona,socal...

 

....... another +2

 

I purchased a set of new vented lowers from LSHD.com for $549 shipped. They keep me warm and dry. I don't know if they keep the engine cooler when the vents are open but I feel cooler. My gas mileage has went up by 2-3 mpg with them on. The vents do get in the way when they are open. I don't notice the noise from the wind but I can hear more engine noise.

 

I found vented lower fairings from Faring factory, on Ebay with quick disconnect hardware for $360.00 Painted, clear coat. They are not harley, but look just like them. For that kinda money I think I may try them.

 

Got lucky and found a set of vented lowers paint color matched my ride, have had them on two years now and love them!!

 

I have non vented. But added aftermarket vents, like them a lot

 

non vented on mine, no problems. I'm going to swap them for the only reason to add speakers in...