Namura Top End Rebuild Kit for Polaris Sportsman 700 Ranger 700 70.00mm NA 50070K1 MPN_03 401 1996 Polaris Scrambler 400 4x4 1996 Polaris Scrambler 400 4x4 50mm Piston Size Added Cylinder Stroke Volume Final Engine Displacement Exhaust Configuration Muffler Size Muffler End Tip Style Windshield Height Windshield Width Handlebar Diameter Ca ARB Compliance Non CARB Complaint CARB Compliant Product Disclaimer Product Details Product Line Namura Top End Rebuild Kit Part Number NA 50070K1 Fitment Type Model Size Specific Fitment Use Type Aftermarket Replacement Unit Sale Qty Style Standard Bore Piston Kit Size Age Group Gender Position Tire Diameter Speed Rating Load Rating Wall Construction Tire Tube Type Rim Size Material Color Finish Functional Length Cable Sleeve Length Cable Sleeve Travel Driver Seat Length Passenger Seat Length Driver Seat Width Passenger Seat Width Overall Seat Width Overall Seat Length Piston Cylinder Size 79 Namura gives you a higher performance piston without the higher price