Import Product Description Import Product Description: The universal accessory will fit 125cc-1000cc Street/Sport/Racing motorcycles and scooters with 28-51mm diameter exhaust pipes, for example for GY6-125 GY6-150 NIAJA 250 CB400 CBF500 ER-6N Z1000 YZF-R1 These are accessory parts. NO DOT, do not use if DOT required Total length: 345mm/13.58″ No instructions included Professional installation recommendedSpecification: Outer diameter: 89mm/3.5″ Connecting: diameter 28mm-51mm Material: Metal Color: the picture shownPackage includes: 1 Set Exhaust MufflerExhaust SystemMufflerMufflerImport Product No invoice availableFeaturesImport Product: Universal accessory will fit 125cc-1000cc Street/Sport/Racing motorcycles and scooters with 28-51mm diameter exhaust pipes, for example for GY6-125 GY6-150 NIAJA 250 CB400 CBF500 ER-6N Z1000 YZF-R1 They are parts of the