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Author Topic: O2 Sensor Bung Hole Plug  (Read 845 times)
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Then I’ll be president of Texaco Oil?!

« on: August 13, 2023, 04:39:09 PM »

Anyone know what size bolt will plug the hole in my S4RS exhaust header — on the left side of the bike, just above the foot peg? I assume an O2 sensor used to be there, but the bike has been tuned and I’m not sure what was there more recently. I only know it didn’t used to be an open bolt hole, and now it shoots blowtorch-blue flames out at my foot when I ride, which hurts after a while. Also it backfires like crazy and goes through fuel like a demon.


Give me a shout if you know any good motorcycle detailers in the Westchester area.
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