WSM Standard Piston Kit for 1996 05 Yamaha PWC models 84mm 010 826K 1993 Harley Davidson Softail Nostalgia FLSTN 2007 Harley Davidson FXDBI Street Bob 2007 Harley Davidson FXDBI Street Bob Product Details Tire Diameter Speed Rating Load Rating Wall Construction Tire Tube Type Rim Size Product Line Ricks Motorsport Regulator Rectifier Part Number 10 421 Fitment Type Unit Sale Qty Style OEM Replacement 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 expansion retarding MOS2 coating to reduce heat and WSM Standard Piston Kit