I have a thermo-bob. I like what it does. I don't know if it extends the life of the bike, but I like seeing that needle in the middle. That said, I was making better money when I did mine. Today, I wouldn't even consider it.
So, if you got the money, it's a neat gizmo. And it does what it claims to do as far as I know. If you don't have a lot of money, I'd skip it or invest in a farkle that makes a bigger difference. For instance, a +1" shift lever changes the bike far more on a practical day to day level.
You're never going to get a good answer to this one because there isn't a real good answer. Wattman made something cool. No doubt. I think it's a good idea, but I also wish I had that money back.
Something to be said for not trying to make a silk purse out of a KLR....
"In a car you're always in a compartment, and because you're used to it you don't realize that through that car window everything you see is just more TV." R. Pirsig
Soon, we ride.
AKA JD Mader or you can call me "Dan" just not early for dinner.
Click my handle for a link to my homepage/blog...which has nothing to do with MCs. Free literature and music! Viva La Revolucion!
2008 KLR 650
RIP DM - Soon, we ride.