Product Description Specifications Piston and Ring Assembly/n +.50mm/n Yamaha G20/n G16/n G11 97+Piston and Ring Assembly, +.50mm, Yamaha G20, G16, G11 97+ Short Description: Piston and Ring Assembly/n +.50mm/n Yamaha G20/n G16/n G11 97+ Manufacturer: Red Hawk