FTTB,Nobody in the Industry that I know of will give you a 100% warranty on nothing race related..The fact that you use this for racing and hard abuse you can't realistically expect anyone too....the concensus is that if a really standup mechanic builds you a motor and he puts it together himself he will stand behind the build somewhat...There are so many varibles to what can happen with a motor once it leaves the mechanic it's hard to stand behind it....I see it and hear it myself,people take and let any and everyone tinkle with their stuff and most don't know what their doing and cause a malfunction and you can't expect the builder to stand behind that do you?How about this one,a guy builds you a motor and sets it up to the max cause that's what you want and then you get beat by someone so you say fuck it i know i can spray or boost up another 25 hp and beat this fucker,next pass you roast the motor,who is responsible????A mechanic can ususally look and see if it was a mechanically failure or operator failure (pushed past the setup he put in it)but racing is just that racing,nothing is guaranteed and nothing is for free....Buy ya a goldwing and enjoy yourself and your wife.....