Namura Piston Kit for 1993 25 Yamaha YZ80 YZ85 Bored to 47.45mm Namura NX 40080 2B 2009 Suzuki LT Z250 Quad Sport Z 2011 12 Kawasaki Ninja 250R 2011 12 Kawasaki Ninja 250R Product Details Tire Diameter Speed Rating Load Rating Wall Construction Tire Tube Type Rim Size Product Line Wrench Rabbit Complete Engine Rebuild Kit Part Number WR101 023 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 Higher silicon content reduces expansion rates and increasesÊwear resistance Namura gives you a higher performance piston without the higher price