SPI sensor wireless transmission using nrf24l01+ but without microcontroller
I just need to transmit it.

Not possible with &quot;just&quot; 2 nrf24L01 chips, there is more to RF communication and protocols. The sensor does not know how to talk to an NRF24L01, and the SPI protocol is vastly different on the arduino side.
What you could do is use more modern modules based on NRF51xxx or NRF52xxx chips, which have both radio and µC included.
You might be able to replace the arduino MCU fully with the one in the NRF module on the &quot;motherboard&quot; side, but it can also work as an SPI slave.
On the osther side, the module needs to know how to talk to the sensor.