Saito 91 Special AAC 4-Stroke Engine w/Muffler

  • Saito 91 Special AAC 4-Stroke Engine w/Muffler
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Model: SAIE091S

This is the Saito .91 Special AAC 4-Stroke Engine with Muffler.  This engine is great for .60-size sport planes, warbirds, and scale aircraft.  The reliable starting and easy tuning make this perfect for that next Cub or whatever project you want to have a great sounding and awesome looking engine!  People will love that 4-stroke sound!  This engine comes with a 3-year warranty.


  • AAC design for lighter weight and increased longevity
  • Reliable start-ups and easy handling
  • Perfectly sized right for mid-sized aircraft


Built for horsepower, the .91 still uses the same case as the FA-65/80 but puts out a whopping 1.7 hp. Famed Radio Controlled Modeler columnist and engine guru Clarence Lee calls the .91S "a real stump puller...". Compared to popular competitors, the lightweight AAC 91S wins the power-to-weight ratio contest hands down. You will be astonished at the power, reliability and smoothness of this engine when you see it for yourself.


Type: 4-stroke
Displacement: .91 cu in (15.0 cc)
Bore: 1.11 in (28.20 mm)
Stroke: 0.94 in (24.00 mm)
Cylinders: Single - Chrome Plated
Engine (Only) Weight: 19.6 oz
Crankshaft Threads: M7 x 1mm
Benchmark Prop: 14 x 6 Zinger @ 9,100
Prop Range: 12x8 - 15x6
RPM Range: 2,000 - 11,000
Fuel: 10% - 30% Synthetic
Mounting Dimensions: 116 x 60 x 117 mm
Muffler Type: Cast
Cylinder Type: AAC
Carb Type: Barrel, 2 Needle Valve
Crank Type: Ball Bearing

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