Carburetor Racing - Yamaha -19mmCaracteristicas: Race crankshaft is made of special steel that is machine forged for added strength and features a 12mm wrist pin Included 19mm Dell' Orto carburetor provides optimal airflow to match the increase in engine performance Kits feature a new cylinder head design, lighter flat head piston and special porting to increase power Lighter connecting rods have full rounds and special needle bearings to reduce crankshaft volume Center stand must