Engine kill switch with 4-pin connector for 50cc, 150cc, and 250cc Chinese manufactured scooters This is a two position kill switch can be used on a variety of gas applicationsDescription Engine kill switch with 4-pin connector for 50cc, 150cc, and 250cc Chinese manufactured scooters. This is a two position kill switch can be used on a variety of gas applications. Please compare your existing scooter switch against the one pictured to determine compatibility. ? WARNING California Residents: Proposition 65 Warning