Rizoma PROGUARD SYSTEM® Multifit Mounting Kit891298921 Product Description Product Instructions The LPR200B adapter (Aluminium ALLOY Weight 40 g) allows fitting of both the STREET and SPORT versions of the Rizoma PROGUARD SYSTEM to handlebars with an inner diameter of between 14. 5 and 20 mm using the expanders supplied with the kit. The LPR200B adapter (Aluminium ALLOY Weight 40 g) allows fitting of both the STREET and SPORT versions of the Rizoma PROGUARD SYSTEM to handlebars with an inner