Other then the diff in thread, would 09 O2 sensors work on a '11 bike - looking at some 09 pipes because they look better then the '11 models. big radius 2-2's

 

dont think so...
09 and earlier the O2 were not pre-heated...
10's and later are.

 

I think he is just asking about bolting in the 02, not their actual wiring. The '11 are heated and 4 wire vs the 09 2 wire.

The bung size will different but if you want, a muffler shop can weld in the right bung size for cheap. It's just a hassle.

 

i knew the thread size was diff, it was the O2 sensor it self i was curious about. Question was asked to see if i could just buy some 09 sensors and plug and go, but if the new ones are heated then nopers.

 

Nope, they are different. 4 wire heated.