Probably the hardest achievement in the DLC pack. This can be accomplished on any of the bikes that can hold a wheelie [Gecko, Phoenix, Scorpion]. Players have mixed results with the bikes, but personally, I've found that the Phoenix is the best and easiest to use for this achievement, although all are valid options. You will need a lot of patience and practice for this achievement. As for tips, make sure to feather the gas and don't always go full throttle. You can lean back with a little throttle to really get that front wheel up. Also, for the last jump, you will basically have to land almost at a 90 degree angle with your back tire so that you don't slam down.