ScootsUSA 250cc Performance DC CDI Performance Racing CDI for the 250cc water-cooled 172mm engine found on Chinese street-legal scooters, ATVs, Dune Buggies and Karts. Please see our Warranty & Returns Policy. 6 Pin Connection, 2/4 Split Length: 3.7 inches Width: 2 inches Height: 1.25 inches Wire Length (including plug): 5 inches Voltage: DC