Ya like Wuffie says you can be sneaky about it but think of it this way
If you add 150 watts of electrical draw and frap a stator or reg rect you just need to man up and fix it yourself (Example)
Same with any other mod that causes a subsequent failure to an effected part like a big bore kit and a rod failure for example
If you change the handle bars or exhaust and frap a stator, no one will look to argue with you
Everyone thinks factories try their best to get out of warranty but they dont, in fact a large amount of warranty dollars are "Goodwill" meaning the dealer or customer cause the problem due to misuse or abuse
Just be fair and life is good