This is our Professional Racing CDI. Unlike other Rev-Limiter removal CDI’s, This CDI has a aluminum Heat Sync Casing to reduce heat, the #1 cause of performance CDI failure. Also designed to resist vibration and impact, by using a non-conducting silica-sand to fill the inner case. Will also modify acceleration curve! Max RPM increase as high as 10,000 RPM (Most stock are 6,000 RPM). This CDI has a 6 pin square connector as shown. Fits: KYMCO G3 engine and China Cloned GY6 1P39QMB / 1P52 QMI / 1P57QMJ; P152QMI / P157QMJ / etc Honda; base GY6 engine that use AC powered CDI ATV Quads; & Scooter Dimension: L=2.89″, Width=1.45″, Thickness=1.17″ 6 wires: red,black end in a 2-pin male plug; blue,yellow and 2 green end in a 4-pin male plug supported the Brands of BAOTIAN, BASHAN, BENZHOU, CFMOTOR, CHARMING, DAYANG, DINLI, FUXIN, GEELY, GILERA, HANGLONG, HAOJIN, HAOJUE, HISUN, HONGZHOU, HUATIAN, JIAJUE, JIANSHE, JINLUN, JMSTAR, JONWAY, KAITONG, KEEWAY, KINROAD, KYMCO, LIFAN, LINGBEN, LINGTIAN, LINHAI, LINTEX, LONCIN, LONGJIA, MAWI, MEIDUO, MOTORRO, PIAGGIO, QINGQI, RHON, RIEJU, SACHS, SHINERAY, SKYGO, SUKIDA, TAOTAO, VESPA, VONROAD, WANGYE, WONJAN, XINGYUE, XINLING, XINTIAN, YIBEN, YINGANG, ZHONGYU, ZNEN, ZONGSHEN, etc.