Gives difference flow and sound effect and Easy to install,Comes with spring hooks and welding connectors for quick installation Fitment:This Exhaust System will fits for GY6 125cc or 150cc Scooters and most Chinese 125cc/150cc GY6 Scooters.2002-2015 Honda Ruckus/Zoomer with GY6 (125cc/150cc) Engine Swaps. Great sound effect,Easy to install, no instruction Material:Stainless Steel,Full stainless steel header exhaust with colored muffler The Mounting Bracket center to center hole distance is 130mm you may need to refit the bracket if your vehicle hole is not the same. Please check the Swingarm or Frame and ensure it before ordering! Product description Gives difference flow and sound effect and Easy to install,Comes with spring hooks and welding connectors for quick installation Fitment:This Exhaust System will fits for GY6 125cc or 150cc Scooters and most Chinese 125cc/150cc GY6 Scooters.2002-2015 Honda Ruckus/Zoomer with GY6 (125cc/150cc) Engine Swaps. Material:Stainless Steel,Full stainless steel header exhaust with colored muffler The Mounting Bracket center to center hole distance is 130mm you may need to refit the bracket if your vehicle hole is not the same. Please check the Swingarm or Frame and ensure it before ordering!