The Genuine Mikuni Needle Valve Spring is part of the latest collection from Mikuni.. Features: Made in Japan.Specifications: Base Color: Black. Color/Finish: Black. Product Name: Spring. Spring Rate: 80.00 g (0.18 lb). Type: Needle Valve. Units: Each. Manufacturer part number: 730-03033. View all Mikuni. View all Parts and spares..