For the availability of and prices of spare parts, we would suggest you walk into the nearest service centres as they will be better people to assist you. You can click on the following link to see the details of the nearest service centres and selecting your city accordingly - Service centre.
Exchange of a bike would depend on certain factors like brand, model, physical condition, kilometers driven, no. of owners and many more. In order to check for exchange offers and value, we recommend you to get in touch with nearby dealership. New Bike Showrooms - Click Here.