Both of my bikes have pos Jardine RT 4 exhausts. I ordered a spark arrestor for each of them from jardine last Wed. morning 8/4 paid $24 for shipping and put a note in the order saying to please call me if it will not arrive by next Thursday 8/12 because I'm heading to Colorado on Friday 8/13 and need spark arrestors. Well today 8/11 rolls around and I call them to inquire where the hell they are since they didn't send me a tracking number or respond to my emails and they say "oh well we didn't have one of them in stock so we didn't ship the order" . So now I'm screwed. I can't figure out what to do other than make a spark arrestor for each of them which is slightly better than nothing. I can't seem to find any universal USFS approved ones. What to do.... Planning on riding at Rampart Range on Tuesday.