Motosport Holeshot King
To get a holeshot, you need to be the first rider into the first corner. If you can't get this one, try holding clutch and gas while you wait for the gates to drop. Then just figure out the exact timing you need to release the clutch. I've noticed that the other racers will start revving up their engines right before the gates drop, so use them to help judge your timing. Just get your timing right 3 times in a row. You do not have to complete 3 races to get this. Once it says "you got the Motosport Holeshot" in the bottom left of your screen you can restart. If you know for sure you won't get the holeshot, pause and restart the race and it won't count towards 3 in a row.