The O2 sensor in my AEM 30-4110 kit has no Bosch logo. Is it genuine?

Yes. AEM has supplied the 30-4110 with this sensor for more than 5 years. It is a 100% original Bosch LSU 4.9 oxygen sensor in its OEM version, which is why there is no logo on the sensor body. You can find the Bosch part number and logo on the sensor's connector.