The size of the disk brake pads used on a Harley-Davidson motorcycle can vary depending on the specific model and year of the bike. Different models may have different brake systems and require different pad sizes. It's important to refer to the manufacturer's specifications or consult the owner's manual for the precise size and type of brake pads recommended for your specific Harley-Davidson motorcycle.
To ensure the correct brake pad size, it is advisable to consult a Harley-Davidson dealership or a qualified mechanic who has experience working with Harley-Davidson motorcycles. They will have the expertise and access to the necessary information to determine the appropriate brake pad size for your particular model.