For an exchange you must pay the shipping for your original order to come back. Bike must be unopened and unridden in the original packaging. If you request assembly for your order and accept the bicycle, it cannot be returned.All straight returns are subject to 15% restocking fee and return shipping. Bicycle must be returned in original packaging (unopened and unridden). You have a 14-day return window from when you receive the bicycle to be able to return the bike. Once you are past this 14-day window the bike can no longer be accepted for a refund.