Rear Bumper Diffuser Volkswagen W Golf 5 MK5 R32 GTI US Spec High quality rear diffuser. Unpainted ready for primer and paint. All kits are sold as unfinished products, prep-work (i.e. sanding, cutting, filling, body work and primer) and painting is required for the best finished look. Items come in gray primer. Professional shop with body kit installation experience recommended.