I don't see why it isn't possible.
It would just be like making an addon, then, have a look at the configs, seeing as the ones for Resitance are different to OFP: CWC (duh!) you can tell that the config defining Motorcycles (and bikes after that) comes from LandVehicle: Land (which is present in OFP: CWC) so technically you might be able to trick OFP into thinking it doesn't need resistance by putting this line:
requiredVersion = 1.30;
into the config. Probably a load of crap what I just said, but there is a 1:100000000 chance it might work, right?
Alternatively, use the Motorcycle simulator Generl Barron talked about.