• All FX engines come with remote needle valve - the feature most asked for!
• A longer crankshaft provides more secure attachment for spinner, prop and nut
• Dual ball bearing construction adds durability and longevity
• Semi-square head shape creates more fin area to increase cooling capacity
• Each engine comes with a high-performance carburetor and muffler with adjustable exhaust direction and built-in pressure tap

Specifications:

• Displacement: 0.249cu.in. (4.07cc)
• Output: 0.84ps/18000rpm
• Practical RPM: 2500~19000
• Weight: 248g
• Prop: 9 x 5~6/9.5 x 5/10 x 5