i was taking the mick on washing inside your exhaust!! saying that i do polish inside of my slash cut, a bit solvol onmy mop and it fits perfect inside the pipe with my battery drill , i know sad! i think it is a bit over the top expecting water to collect inside of the slash cut . you can change its angle slightly its up to you how you want it to look, any exhaust could potentially take some water in depending on the wind and angle it comes down, like i said its a bit over the top!! never had a problem and these are good quality polished stainless steel not chrome, as for the washing never washed my bikes ,if i have been caught and the bike has got really dirty i use no more than a damp sponge , all other times the bike is cleaned with waterless wax. using power washes or completely soaking my bike does not appeal to me , the water gets every were on the bike no matter how good at drying you will always get some water left behind , then it will rust or cause electrical probs, all of my bikes have been totally mint when i have moved them on polished to death. just my opininion.