Specification:
- Displacement: 0.607 cu in
- Bore: 0.945 in
- Stroke:0.866 in
- Practical rpm:2,000-17,000
- Output: 1.90 @ 16,000(HP@rpm)
- Weight: 19.4 oz
- Recommended Props: Tuned Pipe: 12x9, 12x10, 12x11 / Sport: 12x6, 12x7, 12x8, 13x6, 13x7

The state-of-the-art in sport/competition engines!

• 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
  
• 61FX and 91FX feature a remote needle valve that can be positioned two ways, to help you avoid cowl modification and preserve your plane's scale lines; 160 FX remote needle can be mounted three ways