cvo models are produced in harley-davidson's york, pennsylvania plant, where touring and softail models are also manufactured. in each model year, cvo models feature larger-displacement engines than the mainstream models, and these larger-displacement engines make their way into the normal "big twin" line within a few years when cvo models are again upgraded. accessories created for these customized units are sometimes offered in the harley-davidson accessory catalog for all models in later years, but badging and paint are kept exclusively for cvo model owners, and cannot be replaced without providing proof of ownership to the ordering dealer.