Yes they would probably fail at a faster rate.... 
(Why stress out to the max a motor that can't stay running at lower speeds and rpm's?)
10/4 to that. so then why are these SE kits being sold and telling you it has power everywhere? then also for high rpm sustained, that's is funny stuff too ,, I guess running at 60-75 mph is sustained high rpm now huh? such bs is beyond me. the bike of years ago you could ride them at far more rpm because they were geared with 3,37 and 3,15 gears and you could run 4000 rpm all day and all was good for many thousands of mile and that's fact. now you ride for an hour set the cruise on these wonderful m8 bikes and you must may end up walking . it is what it is and something needs to be done about this failure of a high ## bike and no cure or real fix available that anyone has come up with ? if they have people may want to see it or have access to in with the warranty. this has and is going on and no cure is sad.