Namura Piston Kit for KTM 65 SX 65 XC 44.97mm NX 70002 6B 2020 Suzuki RM Z450 1988 Yamaha FZ750 1988 Yamaha FZ750 Product Details Tire Diameter Speed Rating Load Rating Wall Construction Tire Tube Type Rim Size Product Line Hot Rods Water Pump Kit Part Number WPK0047 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 reduced friction Namura gives you a higher performance piston without the higher price