Part Number: 23645A Manufactured from the highest quality aluminum alloys Vertex cast or forged piston kit with MSO2 coated piston skirt Available in unique piston profiles and compression ratios to maximize power. Piston kit includes rings, wrist pin, cir-clips Made in the U.S.A. Manufactured from the highest quality aluminum alloys and tempered to a T-5 or T-6 hardening and tempering cycles. Vertex produces unique piston profiles and compression ratios to maximize power and performance while reducing blow-by and oil consumption. Every Vertex piston has a molybdenum disulphide (MOS2) coating on the piston skirt, which aids in the break-in process and reduces wear on your new piston. Fits:2010 Polaris 800 Ranger 4x42008-11 Polaris 800 RZR2009-11 Polaris 800S RZR2005-10 Polaris 800 Sportsman Specs: Compression Ratio (x:y): 10.2:1 Cylinder Diameter (mm): 82.00 Displacement (cc): 800.00 Piston Diameter (mm): 81.95 Size Over Standard: 2 Product Details Tire Diameter Speed Rating Load Rating Wall Construction Tire Tube Type Rim Size Product Line Vertex Replica Piston Kit Part Number 23645A Fitment Type Unit Sale Qty Each Style Material Color Size 81.95mm 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 81.95mm 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 Items Included Fitments