Vertex Cast Replica Piston Kit for 1998 Suzuki RM250 66.35mm 22540B 2007 Buell XB9 2010 Suzuki LS650 Boulevard S40 2010 Suzuki LS650 Boulevard S40 Product Details Tire Diameter Speed Rating Load Rating Wall Construction Tire Tube Type Rim Size Product Line Ricks Motorsport Stator Part Number 21 329 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 Cast Replica pistons are OE replacements with stock OE compression ratios or C pistons match your cylinder bore perfectly to maximize power and performance while reducing blow by and oil consumption