Not all of them you just have to make sure they are tightened which the stock ones suck, so i bought me some hose clamps, and yes they are known for one way starter gears going. Trust me bro, it will save in the long run. Save yourself a good $150 and throw in a L&A Oneway starter gear.
Even when they are tight the stock ones when it back fires will blow the carbs off.
I have changed more carb boots, starter spirags, and trannies in Raptors than you have even rode or seen.