To determine whether you can fit a new ABS unit on your old Royal Enfield Classic 500, it is best to consult with an authorized Royal Enfield dealer or service center. They will have the most up-to-date information on the compatibility of ABS units and the feasibility of retrofitting them onto older models.
Dealerships and service centers are knowledgeable about the technical specifications and requirements for various motorcycle models. They can assess your specific Classic 500 model, its compatibility with ABS units, and any necessary modifications or adjustments that may be needed during the installation process.
Reach out to a Royal Enfield dealer or service center, provide them with your motorcycle's details, and inquire about the possibility of fitting a new ABS unit. They will be able to provide you with accurate information, pricing details, and the required procedure to upgrade your Classic 500 with ABS if it is compatible.
Remember, it is always recommended to consult with authorized professionals or service centers for specific technical queries related to your motorcycle. They have the expertise and knowledge to guide you appropriately based on the latest information available.