Sinnis: Terrain T125 ZS125-86(T125). Zongshen: ZS125-39. Taro: TR125-3. Mutt: Stravaig 125cc STRAVAIG. Mitt: MITT 125 GP 2 MITT125GP2. "A camshaft is a shaft that contains a row of pointed cams, in order to convert rotational motion to reciprocating motion.