Anyone know what the correct temperature of the coolant is when the engine is considered warmed up? This is a 09 TXC250. The Veypor that's installed has a temp monitor on the coolant line right before the engine if anyone is wondering where I'm getting the temps from. I usually warm my other bikes up to at least 125 but those are v-twin/i4 sportbikes.

I had a Vapor mounted the same way on my KTM 525 MXC. Temperature varied alot depending on ambient air temp and amount of air over the radiators. On days below about 60 degrees and at speeds above about 30 mph for prolonged periods the temp would drop to just aboove where the thermastat opened (about 155 degrees). On hot days (above 90) and going slow (5 mph) it would get up into the 225 degree range. Average temps on a 70-80 degree day and 10-20 mph air going through the radiators it was around 185 degrees. The Vapor was a good piece of gear.

those temps sound about right for this bike as well. I can't say about the hot temps because I just got the veypor and it hasn't been hot out but 155 to warm up seems right, and I've seen 170-180 during rides lately.