That's poor luck. Maybe just a defective bolt. I think you would have noticed if you had any problems aligning the engine and frame when you installed the bolt. So, I doubt there was anything done to have caused the bolt to fail. Stuff happens though. Good on you for noticing the problem before you took the bike out for a ride. It's never a good day when you start noticing stuff falling off your bike, and bouncing onto the highway. :wink:.Following advice on another forum, I went to check the thread in the engine case was not stripped when the bolt came out.
It did not. I know this because the bolt is still nicely fastened inside it.
It did not come loose, it snapped in two.
It could only have been caused by the engine vibrating because I have never dropped the bike on that side (and never at all since adding the crash protectors). The bike has only been parked at home or my dad's house, so no possibility of any theft attempts that put pressure on the protectors. And I have never done anything to do so myself.
I did this back in '14 when I got mine. I reinforced the existing fender with fiberglass under the middle, because I knew it would be under a lot of strain. The extension I used was made out of fiberglass by me because nothing else fit. Last season after at least 50k miles, the front fender broke just at the joint where the extension ends. No crash, no drama, but I realized that the plastic fender really needs reinforcement from BOTH sides with fiberglass, so I did that on a new fender before painting it and mounting the extension. The new assembly is now noticeably stiffer than the older one and I feel much better about it.I built an extra long front fender extension out of a curved section of a discarded automotive fender liner. It fits and functions perfectly, curves in two dimensions, hugs the front wheel better than a flat profile mud flap, and does not contact the leading lower lip of the bike's fairing. The ones available on line are not long enough to prevent mud, etc. from coating filter and pipes.
Do you really need a v rated tyre? H rated is good to 130mph or 210kmh. V is rated to 149mph/240kmh.I'm going to be replacing my now worn original ZR rated rear tire with a more practical V rated tire that has better grip, (dual purpose) for varied road surfaces. Why a 500 needs a ZR rated tire is beyond me. Bike maxes out at just over an actual 160 kph. I never ride at prolonged speeds anywhere close to that in everyday use.