not sure about the spark arrestor but I would start with your dealer, I bought the bike used and chase has been on it for two years with no problems, I have not touched the clutch only had adults on it on flat ground. I have not yet had chase using to hand clutch I hope to later this year or next.
It has really nice smooth power I would like to find ec50 for his track/trial bike. I would choose the gasser over ktm so when do you want to sell it
