Check the listing for details. [USED]Harley Davidson Genuine Muffler O2 Sensor 2024 Softail FXLRST117 Lowrider. Condition: Used, Made in United States. Listed at 312.97 USD. [USED]Harley Davidson Genuine Muffler O2 Sensor 2024 Softail FXLRST117 Lowrider ST Milwaukee Eight. This O2 sensor was added to the Softail family slip-on sensors from 2021 onwards. We are located in Japan.