Akrapovic Carbon Fiber Slip On Muffler for 2015 16 Aprilia RSV4 S A10SO8 RC MPN_191U 420 50GEBK update them to the same update them to the same features as our Ergo III Cruise Mounts with the update kit Product Details Tire Diameter Speed Rating Load Rating Wall Construction Tire Tube Type Rim Size Product Line Winderosa Water Pump Rebuild Kit Part Number 821612 Fitment Type Unit Sale Qty Kit Style Material Color Size Finish Position Functional Length Cable Sleeve Length Cable Sleeve Travel Driver Seat Length Passenger Seat Length Driver Seat Width Passenger Seat Width Piston Cylinder Size Piston Size Added Cylinder Stroke Volume Final Engine Displacement Exhaust Configuration Muffler Size Muffler End Tip Style Windshield Height Windshield Width Handlebar Diameter California Air Resource Board Compliance FALSE Product Disclaimer Change the nature of your bike by adding more power You also get the unique Akrapovič sound