They do look badass.Alright all functionality aside, neccessary or not........THEY LOOK BADASS!!
I had mine powder coated and diamond cut added the spike cap and now you be the judge. Who cares what they do......just look at 'em.
I really don't see them being an functionally good in hot temps much if your lucky a -10 degrees MAX. I actually think the cooler temps you might see the negative impacts of an oil cooler more pronounced. I believe ambient temp is more important. Like riding in 30-50 degree temps, that oil will cool off more than it will cool down with just the air flow versus outside temps of 95-105.