Same here, im really late game and have just realised I never received it.
Still had my save from the heroes mission so went back to check if I had done anything wrong and nope! Same choices I originally made this time around I can load the vehicle but now have come way to far in my main save to replay all the way just for the bike. Any tips from mods out there?
Even if your car is wrecked and you haven't got it back repaired, so if that is the last vehicle you did ride it will be called upon if you just press the call vehicle button (this is a bug sins the car is wrecked and you still get it?). You need to press and hold the button and chose the bike in the list, after that you can just press the button.