Yasuni R is the direct product of the brand's racing experience with 2-stroke engines. It improves the efficiency & performance of the scooter, due to its larger & better regulated exhaust. * Yasuni R complete exhaust * Improves the performance of the scooter * Gain in power * Requires a modification of the advance mechanism opening * Combines lightness & rigidity * A guarantee of quality in terms of manufacturing & finish * With silencer: carbon * Exhaust approved for road use Article: YASUNI R Silencer Article: YASUNI R Silencer