Renthal Ultralight Rear Sprocket 520 Chain Pitch x 53 Teeth Silver 154U 520 53GRSI Cylinder Works Cylinder Rebuild Kit 1998 99 Polaris Indy 440 XCR 1998 99 Polaris Indy 440 XCR Product Details Tire Diameter Speed Rating Load Rating Wall Construction Tire Tube Type Rim Size Product Line Wiseco Top End Rebuild Kit Part Number PK1198 Fitment Type Unit Sale Qty Each 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 Ca ARB Compliance Non CARB Complaint CARB Compliant Product Disclaimer Their advanced tooth profile Renthal's combination of a high strength base material and exceptionally hardwearing surface result in significantly increased chainwheel life over other brands