Good luck,I know some axle cups can be hard to get off.Since it is a new bike the keeper ring will still be very strong and might give you a little fight getting it off.If you do pull the whoel axle out,put the axle bar in a vise and hold the outside splines in your hand and pull while you hit the backside with a hammer.Hit it in a few diff spots so it isnt put pressure on just one side of the cup and it should come off for you.