Hi everyone.

I have an Inferno MP7.5 which is only used as a BMX track basher. The current Nova .21 motors life span is up. Im looking to fit either the RT9 or WS7.

Which motor out of the two would be more powerful?

Secondly I need clarification. The RT9 on the official site gives item #01909-000222.
Ive seen some RB truggy engines with item #RBC01900-000222.
What are the differences with these two motors?

Any advice would be appreciated.
Thanks