I wager that between now, and the end of time, not one soul can come forth with evidence that they lost an engine due to the lack of a thermo bob being installed on their bike. Not submitted out of opinion, submitted with supporting evidence from objective, professional sources. In specific, information supplied by a forensic engineer.
By installing this modification, one will increase the useful lifespan of their KLR 650 by how much? In what conditions? ...And as evidenced by what?
I don't know if it is useful or not. I can't find any independent, objective testing on this item. I think some of my skepticism is due to some of the wild claims made by purchasers. 20 degree difference in maintained operating temperature may have affect on a heat sensor, and heat sensor activated functions, but it sure won't make your seat softer and increase the realized rear wheel horsepower by 30%. 35 degrees difference in operating temperatures will correct oil consumption from a liter lost in 200 miles, to no oil consumption at all? Thats kind of like telling me that if I buy this certain dog collar, 'ol Bowser will be able to count and speak Greek.
If it makes you feel good, I see no harm. As far as a "you got to or yer engine will fry", the bullshit flag is down on the play. I think it might be a nice thing to do for your bike, allowing it run at even operating temperatures. But we're not talking 700 degree differences here. I;ve toyed with the idea of installing a radiator bypass from an Aprilla or Ducati, which would require minimal adaption, and would cost under 20 bucks. And I will try it. Just as soon as I understand WHY I'm doing it.
And when Brother Damocles see this, order the large tub of popcorn. His dissertation on the Thermo Bob is as long and intense as Doctor Zhivago.
“many a trip continues long after movement in time and space have ceased”- Steinbeck, [I]"Travels with Charlie"
[FONT="Century Gothic"][I]Sometimes your only available transportation is a leap of faith[/I] [/FONT]