You can deduct your business-related expenses for your motorcycle on your Schedule C Profit or Loss from Business. You can deduct your motorcycle expenses using either the actual cost method or by using the standard mileage expense method.
The link below has information that you may find useful in deducting vehicle expenses.
https://turbotax.intuit.com/tax-tips/small-business-taxes/business-use-of-vehicles/L6hi0zzzh
