ProCom Performance CDI UnitPart Number: PE-C-AH400-B Performance CDI replaces OEM unit Timing curve optimized for maximum performance Modern circuitry allows for better spark energy Simple plug in performance upgrade Comes with a Full One Year Warranty This PROCOM Performance CDI for the Honda 400EX (05-09) increases the rev limit by 1,000 RPM over the stock rev limit. In addition, this unit offers a re-mapped timing curve which yields a noticeable increase to horsepower and torque over the stock CDI. This CDI box is a direct plug in replacement CDI. Simply locate and remove the stock CDI, and plug the Procom unit directly into the wiring harness, no modification needed. Suitable for stock and modified machines. We cover all our PROCOM Performance CDIs with a full one year warranty. Product Details Tire Diameter Speed Rating Load Rating Wall Construction Tire Tube Type Rim Size Product Line ProCom Performance CDI Part Number PE-C-AH400-B Fitment Type Unit Sale Qty 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 California Air Resource Board Compliance FALSE Product Disclaimer Items Included Fitments 2005 Honda TRX400EX Sportrax 2006 Honda TRX400EX Sportrax 2007 Honda TRX400EX Sportrax 2008 Honda TRX400EX Sportrax 2009 Honda TRX400EX Sportrax 2012 Honda TRX400EX Sportrax 2013 Honda TRX400EX Sportrax 2014 Honda TRX400EX Sportrax