Re: hello from AZ
Yes they could make it much easier to upgrade and give credit on the parts you don't want in the kit or can swap out better components for ones that you won't use anyhow. Yes there is no doubt safety issues with a sprocket that helps the chain fall off and locks up your rear tire. As far as bearings go, just better bearing would be a good upgrade too, but all bearings will fail if not kept slathered with good grease anyhow I guess.
"One pull and It's on, one snip and its off"
“Lets not get too technical”