Please check the CDI size in the picture carefully. The kit comes with a CDI box. It is not an alarm module. Description:Ignition Coil & Spark Plug CDI For Honda FourTrax 300 TRX300 2×4 4×4 1990-1993High quality Condition: 100% Brand New & Fast Free Shipping OE Part Number: 30410-HC4-770,30510-HC4-000 Fitment For:1990 Honda FourTrax 300 TRX300 2×41990 Honda FourTrax 300 TRX300FW 4×41991 Honda FourTrax 300 TRX300 2×41991 Honda FourTrax 300 TRX300FW 4×41992 Honda FourTrax 300 TRX300 2×41992 Honda FourTrax 300 TRX300FW 4×41993 Honda FourTrax 300 TRX300 2×41993 Honda FourTrax 300 TRX300FW 4×4 Package Including: 1 x Ignition Coil1 x Spark Plug1 x CDIPlease Note:Communication is the best way to solve the problem. If you have any problems after purchasing, please contact us in time, before opening return or case. Please Note:Please check part photos, part number (those two are critical), part description and compatibility chart above carefully to make sure it is what you need.