This is a new OE style CDI Box for the E-Ton Viper RX4-90R and RXL-90R09 Silver Series 4Stroke ATV's with reverse.
Common applications include:
E-Ton Viper 90, RXL-90R09, Silver Series 2009 + (Vin starts with RK19KD or RFZ9KD)
E-Ton Viper 90R, RX4-90R, 2007+ (Vin starts with RK19KA or RFZ9KA)