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FG-40 4-Stroke Gas Single Cylinder Engine: BQ

Item No. SAIEG40
Brand Logo
5 out of 5 Customer Rating

FG-40 4-Stroke Gas Single Cylinder Engine: BQ

Item No. SAIEG40
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Product Details

Key Features

  • Horizon Hobby recommends the use of Red Line or Power Model synthetic oil only, at a mix ratio of 16:1 – 20:1


There are many advantages to going with gas, like cleaner operation and cheaper fuel. Saito™ 4-stroke gas engines give modelers more, such as high-quality standards matched only by impeccable workmanship.

The RC industry’s most reliable manufacturer of top-quality gas 4-stroke engines introduces the Saito FG-40 gas engine. Slightly larger than the FG-36 gas engine, it provides more power for medium to large planes accompanied by the precision craftsmanship of Saito engines, the distinguished look and sweet sound, this is the engine many of you have been waiting for. The engine comes with the smaller Saito 4-stroke ignition module that provides easy starts and reliable performance with lower power consumption. The designed Walbro carburetor features a rotating barrel specially made for 4-stroke engines, ensuring reliable fuel feed and outstanding performance at any attitude. The FG-40 engine comes complete with an aluminum engine mount and muffler.

As an expert in reliable 4-strokes, the Saito brand has spent years developing the best-built 4-stroke gas engine. The power-to-weight ratio of a Saito engine creates a one-of-a-kind flying experience. For serious modelers, the long awaited arrival of a high-quality, powerful and precision craftsmanship gas engine is here.

Product Specifications

Displacement 2.45 cu. in. (40.21 cc)
Oil Type & Content 20:1 gas/oil mixture
Bore 1.57 in (40.0 mm)
Crankshaft Type Threaded
Power Type Gas
Stroke 1.26 in (32.0mm)
Cylinders Single
Total Weight 50.6 oz (1440 g)
Prop Range 19 x 10 - 21 x 10
RPM Range 1,700 - 8,000
Cylinder Type Ringed
Engine (Only) Weight 44.0 oz (1250 g)
Muffler Type Cast
Crankshaft Threads M8 x 1.25
Muffler Weight 2.9 oz (84 g)