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Saito FA-125a 4-Cycle Glow Engine

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Product Features

  • Less weight but more thrust.
  • 10 ounces lighter than the Saito FA-120.
  • Turns an APC 16x6 at 9,000 rpm.
  • 13mm Muffler threads.

Product Description

Only Saito could put 1.25 cubic inches of power into a 1.00-size case. Not only is the Saito FA-125 lighter and more powerful than the Saito FA-120 it replaces, its unique size allows modelers to apply its awesome power to a wide variety of airplane sizes. It will work with anything from .90-size sport aerobats all the way up to 1.20-size sport and IMAC planes.

With 10 fewer ounces and .05 more cubic inches than the Saito FA-120 it replaces, the Saito FA-125A gives new meaning to the term "escape velocity".


  • Displacement: 20.52cc
  • Power: 2.2hp
  • Static Thrust: 5.2kg 
  • Bore: 31.7mm
  • Stroke: 26mm
  • Practical RPM: 2,000 ~ 11,000
  • Weight: 615g
  • Recommended Prop: 14 x 8 ~ 16 x 6in
  • Cylinder: AAC


  • Our shipping times are typically 24-48hrs from ordering during normal business hours.
  • We use a Courier and Australia post as our agents.  Please allow typical delivery times for your area.
  • International shipping is priced per country, please check your cart before ordering.
  • We are unable to ship Dangerous goods overseas. 
  • We are also limited by length of some parcels. Anything over 1.05m will need a specialist courier quote which we can provide.
  • When adding items to your cart you can get a quote for shipping first before commiting to the order.

Customer Reviews

Based on 3 reviews
Chris Gainey
Fa 125

Excellent service. Easy starting motor. Definitely do not put your finger in the way of the propeller.

Peter Mills

I do like 4 Strokes engines it will be nice to see how it performs, I have order a smaller Saito 40 for my smaller aircraft. I have always used OS engines just need a change. My Saito 125 will go into a Cessna 188 AGwagon which I have Order from you when it comes in . HTDirect is a good model shop to deal with

Gavin Kilian (mrgab86)
Saito FA-125

Good powerhouse of an engine. Easy to start, break in was effortless.