ok will take care of both of your questions with 1 post lol. i love how the mudlites change the looks of my rincon. its kind of like life you have to give up somthing to get somthing. and with the new tires you give up some top end.if your were to ask me if my rincon is better now i would say yes.the mudlites pull me though the muck were the oem tires just sat there and spun. i ride in the woods not down a dragstrip so loosing a little top end dose not bother me at all. and that ties in to your queston redbomb, because i plan on adding some more mods like a jet kit and a k&n filter to get my lost hp back the reason for the tip is 2 fold 1 its sounds better than stock 2 what good is adding hp in the front end and having it fight to get out the back end. the stock endcap is 1" the endcap from ebay is2". its not like adding a whole new pipe but when you start it up around other rincons thay all know that my bike aint stock lol. take care guys