Keihin 016.039 PJ 34mm Carburetor The PJ two stroke carburetor has proven itself in the dirt bike market with it's unique oval slide valve Throttle bores sized for more power and improved air flow at low and middle rpm The chromed oval slide enables the engine to respond much quicker than with a conventional round slide carburetor for faster acceleration and improved performance Easy to use enricher and speed control Easy jetting with Jetting parts available