Full exhaust system GPR KYM.4 with collector in stainless steel (with joint for lambda sensor where present in the original) and approved catalyzed silencer. The exhaust systems GPR ensure power increase and a strong weight decrease while maintaining the original carburation. All exhausts are supplied with everything needed for installation (link pipes, clamps, screws, brackets, etc ...).
GPR EU approved exhausts have rear cap removable (Db-killer) and are supplied with certificate of approval to be attached to the vehicle registration certificate. Official warranty 24 months.
GPR production for 4 strokes road bikes provides homologated exhaust systems and racing made by artisans in developing and assembly but with industrial equipment as regards the production capacity.