Thunder Tiger F-91S Four Stroke Nitro or Gas R/C Airplane Engine - NEW. Great engine lots of compression turns smoothly got in a trade. The item "Thunder Tiger F-91S Four Stroke Nitro or Gas R/C Airplane Engine NEW" is in sale since Friday, May 1, 2020. This item is in the category "Toys & Hobbies\Radio Control & Control Line\RC Model Vehicle Parts & Accs\Engine, Exhaust & Fuel Systems\Gas/Nitro Engines".The seller is "1jonathanflint" and is located in Oregon, Missouri. This item can be shipped to United States, Bahamas, Uruguay.