Option 1:
For CORE-5, 500 Series, 700 Series & LMT'd: If you still have 1 key, you can get an affordable copy at your local hardware store or locksmith with an HD-74 blank. We recommend calling ahead to confirm they offer this service and blank.

Option 2:
If yours key are lost you can order here, available for all models: https://ride1up.com/product/replacement-key/ 

Please insert lock cylinder number next to your name at check out (it should be read left to right when number is above slot):