Big Gun Exhaust Rev Box CDI Unit for 1997 01 Yamaha YFM350 Warrior 40 R26A 1983 Yamaha XJ750RK Seca Product Details Tire Diameter Speed Product Details Tire Diameter Speed Rating Load Rating Wall Construction Tire Tube Type Rim Size Product Line Akrapovic Carbon Fiber Slip On Line Mufflers Part Number S S6SO6 HZC Fitment Type Unit Sale Qty Kit Style Straight Can Material Stainless Steel Color Size Finish Carbon Fiber Muffler Sleeve 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 Single Muffler Slip On Exhaust Muffler Size Muffler End Tip Style Carbon Fiber End Cap Windshield Height Windshield Width Handlebar Diameter California Emissions TRUE Product Disclaimer Once internal components are subjected to mud and water corrosion If you are looking to swap out your stock CDI box It increases the overall RPM limit over the stock box and advances the timing curve