Had mine for 6 years now and still running stock. Thought about adding filter, pvc, timing wheel, etc. but my XR has more than enough power as it is so I figured best to leave it alone (for now!).
2011 Cross Roads Sunset Red
OEM short windshield, passenger backrest, crash bars, saddle bag bars, heated grips, vinyl closeouts, tachometer, ambient temp, LED headlight, luggage rack. WD lay down licence plate.