NIBBI Racing Performance 30mm motorcycle carburetor 150CC GY6 Carburetor 200CC Dirt Bike Carburetor Kit With Carburetor Jets Fit SSR TTR Dirt Bike Mini Bike Motorcross GY6 Scooter Moped (Black, 30mm) NIBBI PE Carburetor is refined to perfection and has set the standard among scooter and motocross racing carburetors. Chromed round-flat throttle valve for excellent response and more flow at high RPM. Available in four popular sizes to cover all your horsepower requirements. Easy tuning with jetting parts. Fit for 2T and 4T engine.