O.S. Engines 160FX Ring 60F Carb E5010 Muffler FEATURES: One-piece crankcase Twin ball bearing-supported crankshaft Schnuerle porting (Schnuerle scavenging) Steel liner and ring with Aluminum pisto INCLUDES: One Assembled 1.60 FX Ringed R/C Airplane Engine, #60F Carb, smaller nut for APC props and 3/8-24 safety lock nut One exhaust adaptor One re REQUIRES: Fuel with 18% (minimum) lubricant content and 5% to 25% Nitromethane (Can be flown on FAI fuel, which is 0% Nitro)