Dumb question!!!

[GSXRFANN]

My bike is an 03. Does it have an O2 sensor? Or was the pair valve considered as the O2 sensor?
I have a full exhaust and there are no sensors hooked up to it anywhere.
PLEASE HELP!!

 

[BA BUSA]

U S bikes did not have a O2 sensor until the Gen2 2008 model.
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[GSXRFANN]

Thank you!!!

 

[RussellJ]

The PAIR valve just injects fresh air into the exhaust to pass emissions. I removed mine