NKB Motorcycles of San Diego Welcome to NKB Motorcycles & Products. We specialize in Pre-Owned motorcycles, Parts (New and Used), accessories and service. Our knowledgeable staff has over 100 years of combined experience in the motorcycle industry here in San Diego. NKB motorcycles has been in business and serving the San Diego area since 1999. NKB Motorcycles was established with the customer in mind. We know how important it is to find a motorcycle dealership that that you can trust. Whether it be motorcycle sales, parts, accessories or service, the staff at NKB Motorcycles will ensure you a pleasant experience.