i had a DR800 that I rode alot in the Philippines. it had a 2into1 T4 setup. the headers used to get so hot I ended up with blisters on my leg from the heat. alot of the time there youre just wearing work boots with shorts.

Do you guys think a 2into1 system would do the same on the 660?

Im currently fitting zx636 wheels & forks to the bike so she may be sitting a little lower. Due to this I thought I would run a 2into1 for more clearance, just worried about the heat on my leg...