With the GT60, O.S. gives fliers of 50 cc models everything they want in a gasoline engine — durability, efficiency, easy operation and super-strong performance. O.S. takes advantage of liner-less cylinder construction for benefits that include lower weight, improved cooling, and exceptionally effi...

The O. S. 55HZ-H Hyper Ringed Heli engine is cause to rejoice for 3D heli fliers! The 55-HZ-H Hyper Ringed engine cranks out optimum power with a minimum of space! The PowerBoost Pipe 50/55 is a first from O.S. – designed especially for helis, improving efficiency and power while featuring a compact...

Inner fuel filter good quality dense fiberous filter element for Gas fuel and Jet A1. Size: 31x15 mm....

FEATURES: Dense fiberous filter element. INCLUDES: One Large Fuel Pickup Filter. REQUIREMENTS: Assembly into a refueling jug or can using standard (medium) fuel tubing and a cap fitting set. SPECIFICATIONS: Length: 36.9mm (1.455"). Diameter: 20.1mm (0.792")....

This is an original OS Wraparound Pitts Muffler for the GT-33 suitable forDLE 30cc Gasoline Engines. Very strong and lightweight, resists vibration, will not crack, reduces the sound without losing power or RPMs, ideal for models and fairings without drilling holes....

This is an original OS Wraparound Pitts Muffler for the GT-60 suitable for DLE 55cc Gasoline Engines. Very strong and lightweight, resists vibration, will not crack, reduces the sound without losing power or RPMs, ideal for models and fairings without drilling holes....