Rare Vintage 1986 Graupner OS FS 40 / 4 Stroke Model Engine in Superb Condition.

O.S FS-48 Surpass Four Stroke R/C Model Airplane Engine NICE $ ESTATE SALE

O.S. MAX-40LA 6.49cc 2 cycle R/C airplane glow engine with muffler Used f/s

O.S. Max 30 RC engine old school starts and runs great

OS FS 48 Surpass 4 Cycle RC Engine Part -Carb Air Flap Assembly

Vintage Magic Muffler Tuned Exhaust Pipe RC Airplane Nitro glow Engines WW Ship

O.S. FS-48S 14.95cc 4-cycle glow engine with muffler For R/C Airplane

O.S. Max S30 R/C Engine